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Oracle ORA-600 error Encyclopedia – Advanced knowledge article for the new oracle DBA

A new or advanced oracle DBA can find here a complete description of the numerous error codes that come along with the ORA-600 errrors. When your database has an ORA-600 error it produces a trace file. when you look in the trace file you will see apart from the ORA-600 other error codes which are not clear immediately. Below article from oracle support contains an indepth description of the various error codes and should help you to narrow down your error quite fast. all the best.

ORA-600 Lookup Error Categories [ID 175982.1]  

  Modified 04-JUN-2009     Type BULLETIN     Status PUBLISHED  

In this Document
  Scope and Application
  ORA-600 Lookup Error Categories
     Internal Errors Categorised by number range
     Internal Errors Categorised by mnemonic

Applies to:

Oracle Server – Enterprise Edition – Version:
Oracle Server – Personal Edition – Version:
Oracle Server – Standard Edition – Version:
Information in this document applies to any platform.
Checked for relevance 04-Jun-2009


This note aims to provide a high level overview of the internal errors which may be encountered on the Oracle Server (sometimes referred to as the Oracle kernel). It is written to provide a guide to where a particular error may live and give some indication as to what the impact of the problem may be. Where a problem is reproducible and connected with a specific feature, you might obviously try not using the feature. If there is a consistent nature to the problem, it is good practice to ensure that the latest patchsets are in place and that you have taken reasonable measures to avoid known issues.

For repeatable issues which the ora-600 tool has not listed a likely cause , it is worth constructing a test case. Where this is possible, it greatly assists in the resolution time of any issue. It is important to remember that, in a many instances , the Server is very flexible and a workaround can very often be achieved.

Scope and Application

This bulletin provides Oracle DBAs with an overview of internal database errors.

Disclaimer: Every effort has been made to provide a reasonable degree of accuracy in what has been stated. Please consider that the details provided only serve to provide an indication of functionality and, in some cases, may not be wholly correct.

ORA-600 Lookup Error Categories

In the Oracle Server source, there are two types of ora-600 error :

  • the first parameter is a number which reflects the source component or layer the error is connected with; or
  • the first parameter is a mnemonic which indicates the source module where the error originated. This type of internal error is now used in preference to an internal error number.

Both types of error may be possible in the Oracle server.

Internal Errors Categorised by number range

The following table provides an indication of internal error codes used in the Oracle server. Thus, if ora-600[X] is encountered, it is possible to glean some high level background information : the error in generated in the Y layer which indicates that there may be a problem with Z.

Ora-600 Base Functionality Description
1 Service Layer The service layer has within it a variety of service related components which are associated with in memory related activities in the SGA such as, for example : the management of Enqueues, System Parameters, System state objects (these objects track the use of structures in the SGA by Oracle server processes), etc.. In the main, this layer provides support to allow process communication and provides support for locking and the management of structures to support multiple user processes connecting and interacting within the SGA. 

Note : vos  – Virtual Operating System provides features to support the functionality above.  As the name suggests it provides base functionality in much the same way as is provided by an Operating System.

Ora-600 Base Functionality Description
1 vos Component notifier 
100 vos Debug
300 vos Error
500 vos Lock
700 vos Memory
900 vos System Parameters 
1100 vos System State object 
1110 vos Generic Linked List management 
1140 vos Enqueue
1180 vos Instance Locks 
1200 vos User State object 
1400 vos Async Msgs 
1700 vos license Key 
1800 vos Instance Registration 
1850 vos I/O Services components


2000 Cache Layer Where errors are generated in this area, it is advisable to check whether the error is repeatable and whether the error is perhaps associated with recovery or undo type operations; where this is the case and the error is repeatable, this may suggest some kind of hardware or physical issue with a data file, control file or log file. The Cache layer is responsible for making the changes to the underlying files and well as managing the related memory structures in the SGA. 

Note : rcv indicates recovery. It is important to remember that the Oracle cache layer is effectively going through the same code paths as used by the recovery mechanism.

Ora-600 Base Functionality Description
2000 server/rcv Cache Op
2100 server/rcv Control File mgmt 
2200 server/rcv Misc (SCN etc.) 
2400 server/rcv Buffer Instance Hash Table 
2600 server/rcv Redo file component 
2800 server/rcv Db file 
3000 server/rcv Redo Application 
3200 server/cache Buffer manager 
3400 server/rcv Archival & media recovery component 
3600 server/rcv recovery component
3700 server/rcv Thread component 
3800 server/rcv Compatibility segment

It is important  to consider when the error occurred and the context in which the error was generated. If the error does not reproduce, it may be an in memory issue.

4000 Transaction Layer Primarily the transaction layer is involved with maintaining structures associated with the management of transactions.  As with the cache layer , problems encountered in this layer may indicate some kind of issue at a physical level. Thus it is important to try and repeat the same steps to see if the problem recurs. 

Ora-600 Base Functionality Description
4000 server/txn Transaction Undo 
4100 server/txn Transaction Undo 
4210 server/txn Transaction Parallel 
4250 server/txn Transaction List 
4300 space/spcmgmt Transaction Segment 
4400 txn/lcltx Transaction Control 
4450 txn/lcltx distributed transaction control
4500 txn/lcltx Transaction Block 
4600 space/spcmgmt Transaction Table 
4800 dict/rowcache Query Row Cache 
4900 space/spcmgmt Transaction Monitor 
5000 space/spcmgmt Transaction Extent 

It is important to try and determine what the object involved in any reproducible problem is. Then use the analyze command. For more information, please refer to the analyze command as detailed in the context of  Note:28814.1; in addition, it may be worth using the dbverify as discussed in Note:35512.1.

6000 Data Layer The data layer is responsible for maintaining and managing the data in the database tables and indexes. Issues in this area may indicate some kind of physical issue at the object level and therefore, it is important to try and isolate the object and then perform an anlayze on the object to validate its structure. 

Ora-600 Base Functionality Description
6000 ram/data
data, analyze command and index related activity
7000 ram/object lob related errors
8000 ram/data general data access
8110 ram/index index related
8150 ram/object general data access

Again, it is important to try and determine what the object involved in any reproducible problem is. Then use the analyze command. For more information, please refer to the analyze command as detailed in the context of  Note:28814.1; in addition, it may be worth using the dbverify as discussed in Note:35512.1.

12000 User/Oracle Interface & SQL Layer Components This layer governs the user interface with the Oracle server. Problems generated by this layer usually indicate : some kind of presentation or format error in the data received by the server, i.e. the client may have sent incomplete information; or there is some kind of issue which indicates that the data is received out of sequence

Ora-600 Base Functionality Description
12200 progint/kpo
lob related
errors at interface level on server side, xa , etc.
12300 progint/if OCI interface to coordinating global transactions 
12400 sqlexec/rowsrc table row source access
12600 space/spcmgmt operations associated with tablespace : alter / create / drop operations ; operations associated with create table / cluster
12700 sqlexec/rowsrc  bad rowid
13000 dict/if dictionary access routines associated with kernel compilation
13080 ram/index kernel Index creation
13080 sqllang/integ constraint mechanism
13100 progint/opi archival and Media Recovery component
13200 dict/sqlddl alter table mechanism
13250 security/audit audit statement processing
13300 objsupp/objdata support for handling of object generation and object access
14000 dict/sqlddl sequence generation
15000 progint/kpo logon to Oracle
16000 tools/sqlldr sql loader related

You should try and repeat the issue and with the use of sql trace , try and isolate where exactly the issue may be occurring within the application.

14000 System Dependent Component internal error values This layer manages interaction with the OS. Effectively it acts as the glue which allows the Oracle server to interact with the OS. The types of operation which this layer manages are indicated as follows.

Ora-600 Base Functionality Description
14000 osds File access
14100 osds Concurrency management; 
14200 osds Process management;
14300 osds Exception-handler or signal handler management
14500 osds Memory allocation


15000 security/dac,
local user access validation; challenge / response activity for remote access validation; auditing operation; any activities associated with granting and revoking of privileges; validation of password with external password file
15100 dict/sqlddl this component manages operations associated with creating, compiling (altering), renaming, invalidating, and dropping  procedures, functions, and packages.
15160 optim/cbo cost based optimizer layer is used to determine optimal path to the data based on statistical information available on the relevant tables and indexes.
15190 optim/cbo cost based optimizer layer. Used in the generation of a new index to determine how the index should be created. Should it be constructed from the table data or from another index.
15200 dict/shrdcurs used to in creating sharable context area associated with shared cursors
15230 dict/sqlddl manages the compilation of triggers
15260 dict/dictlkup
dictionary lookup and library cache access
15400 server/drv manages alter system and alter session operations
15410 progint/if manages compilation of pl/sql packages and procedures
15500 dict/dictlkup performs dictionary lookup to ensure semantics are correct
15550 sqlexec/execsvc
hash join execution management; 
parallel row source management
15600 sqlexec/pq component provides support for Parallel Query operation
15620 repl/snapshots manages the creation of snapshot or materialized views as well as related snapshot / MV operations
15640 repl/defrdrpc layer containing various functions for examining the deferred transaction queue and retrieving information
15660 jobqs/jobq manages the operation of the Job queue background processes
15670 sqlexec/pq component provides support for Parallel Query operation
15700 sqlexec/pq component provides support for Parallel Query operation; specifically mechanism for starting up and shutting down query slaves
15800 sqlexec/pq component provides support for Parallel Query operation
15810 sqlexec/pq component provides support for Parallel Query operation; specifically functions for creating mechanisms through which Query co-ordinator can communicate with PQ slaves;
15820 sqlexec/pq component provides support for Parallel Query operation
15850 sqlexec/execsvc component provides support for the execution of SQL statements
15860 sqlexec/pq component provides support for Parallel Query operation
16000 loader sql Loader direct load operation;
16150 loader this layer is used for ‘C’ level call outs to direct loader operation;
16200 dict/libcache this is part of library Cache operation. Amongst other things it manages the dependency of SQL objects and tracks who is permitted to access these objects;
16230 dict/libcache this component is responsible for managing access to remote objects as part of library Cache operation;
16300 mts/mts this component relates to MTS (Multi Threaded Server) operation
16400 dict/sqlddl this layer contains functionality which allows tables to be loaded / truncated and their definitions to be modified. This is part of dictionary operation;
16450 dict/libcache this layer layer provides support for multi-instance access to the library cache; this functionality is applicable therefore to OPS environments;
16500 dict/rowcache this layer provides support to load / cache Oracle’s dictionary in memory in the library cache;
16550 sqlexec/fixedtab this component maps data structures maintained in the Oracle code to fixed tables such that they can be queried using the SQL layer;
16600 dict/libcache this layer performs management of data structures within the library cache;
16651 dict/libcache this layer performs management of dictionary related information within library Cache;
16701 dict/libcache this layer provides library Cache support to support database creation and forms part of the bootstrap process;
17000 dict/libcache this is the main library Cache manager. This Layer maintains the in memory representation of cached sql statements together will all the necessary support that this demands;
17090 generic/vos this layer implementations error management operations: signalling errors, catching  errors, recovering from errors, setting error frames, etc.;
17100 generic/vos Heap manager. The Heap manager manages the storage of internal data in an orderly and consistent manner. There can be many heaps serving various purposes; and heaps within heaps. Common examples are the SGA heap, UGA heap and the PGA heap. Within a Heap there are consistency markers which aim to ensure that the Heap is always in a consistent state. Heaps are use extensively and are in memory structures – not on disk. 
17200 dict/libcache this component deals with loading remote library objects into the local library cache with information from the remote database.
17250 dict/libcache more library cache errors ; functionality for handling pipe operation associated with dbms_pipe
17270 dict/instmgmt this component manages instantiations of procedures, functions, packages, and cursors in a session. This provides a means to keep track of what has been loaded in the event of process death; 
17300 generic/vos manages certain types of memory allocation structure.  This functionality is an extension of the Heap manager.
17500 generic/vos relates to various I/O operations. These relate to async i/o operation,  direct i/o operation and the management of writing buffers from the buffer cache by potentially a number of database writer processes;
17625 dict/libcache additional library Cache supporting functions
17990 plsql plsql ‘standard’ package related issues
18000 txn/lcltx transaction and savepoint management operations 
19000 optim/cbo cost based optimizer related operations
20000 ram/index bitmap index and index related errors.
20400 ram/partnmap operations on partition related objects
20500 server/rcv server recovery related operation
21000 repl/defrdrpc, 
replication related features
23000 oltp/qs AQ related errors.
24000 dict/libcache operations associated with managing stored outlines
25000 server/rcv tablespace management operations

Internal Errors Categorised by mnemonic

The following table details mnemonics error stems which are possible. If you have encountered : ora-600[kkjsrj:1] for example, you should look down the Error Mnemonic column (errors in alphabetical order) until you find the matching stem. In this case, kkj indicates that something unexpected has occurred in job queue operation.

Error Mnemonic(s) Functionality Description
ain ainp  ram/index ain – alter index; ainp –  alter index partition management operation
apacb  optim/rbo used by optimizer in connect by processing
atb atbi atbo ctc ctci cvw  dict/sqlddl alter table , create table (IOT) or cluster operations as well as create view related operations (with constraint handling functionality)
dbsdrv sqllang/parse alter / create database operation
ddfnet  progint/distrib various distributed operations on remote dictionary
delexe  sqlexec/dmldrv manages the delete statement operation
dix  ram/index manages drop index or validate index operation 
dtb  dict/sqlddl manages drop table operation
evaa2g evah2p evaa2g  dbproc/sqlfunc various functions involves in evaluating operand outcomes such as : addition , average, OR operator, bites AND , bites OR, concatenation, as well as Oracle related functions : count(), dump() , etc. The list is extensive.
expcmo expgon  dbproc/expreval handles expression evaluation with respect to two operands being equivalent
gra  security/dac manages the granting and revoking of privilege rights to a user
gslcsq  plsldap support for operations with an LDAP server
insexe  sqlexec/dmldrv handles the insert statement operation
jox  progint/opi functionality associated with the Java compiler and with the Java runtime environment within the Server
k2c k2d  progint/distrib support for database to database operation in distributed environements as well as providing, with respect to the 2-phase commit protocol, a globally unique Database id
k2g k2l txn/disttx support for the 2 phase commit protocol protocol and the coordination of the various states in managing the distributed transaction
k2r k2s k2sp  progint/distrib k2r – user interface for managing distributed transactions and combining distributed results ; k2s – handles logging on, starting a transaction, ending a transaction and recovering a transaction; k2sp – management of savepoints in a distributed environment.
k2v  txn/disttx handles distributed recovery operation
kad  cartserv/picklercs handles OCIAnyData implementation 
kau  ram/data manages the modification of indexes for inserts, updates and delete operations for IOTs as well as modification of indexes for IOTs
kcb kcbb kcbk kcbl kcbs kcbt kcbw kcbz  cache manages Oracle’s buffer cache operation as well as operations used by capabilities such as direct load, has clusters , etc.
kcc kcf  rcv manages and coordinates operations on the control file(s)
kcit  context/trigger internal trigger functionality 
kck  rcv compatibility related checks associated with the compatible parameter
kcl  cache background lck process which manages locking in a RAC or parallel server multiple instance environment
kco kcq kcra kcrf kcrfr kcrfw kcrp kcrr kcs kct kcv  rcv various buffer cache operation such as quiesce operation , managing fast start IO target, parallel recovery operation , etc. 
kd  ram/data support for row level dependency checking and some log miner operations
kda  ram/analyze manages the analyze command and collection of statistics
kdbl kdc kdd  ram/data support for direct load operation, cluster space management and deleting rows
kdg  ram/analyze gathers information about the underlying data and is used by the analyze command
kdi kdibc3 kdibco kdibh kdibl kdibo kdibq kdibr kdic kdici kdii kdil kdir kdis kdiss kdit kdk  ram/index support of the creation of indexes on tables an IOTs and index look up 
kdl kdlt  ram/object lob and temporary lob management
kdo  ram/data operations on data such as inserting a row piece or deleting a row piece 
kdrp  ram/analyze underlying support for operations provided by the dbms_repair package
kds kdt kdu  ram/data operations on data such as retrieving a row and updating existing row data
kdv kdx  ram/index functionality for dumping index and managing index blocks
kfc kfd kfg   asm support for ASM file and disk operations
kfh kfp kft  rcv support for writing to file header and transportable tablespace operations
kgaj kgam kgan kgas kgat kgav kgaz  argusdbg/argusdbg support for Java Debug Wire Protocol (JDWP) and debugging facilites
kgbt kgg kgh kghs kghx kgkp vos kgbt – support for BTree operations; kgg – generic lists processing; kgh – Heap Manager : managing the internal structures withing the SGA / UGA / PGA and ensures their integrity; kghs – Heap manager with Stream support; kghx – fixed sized shared memory manager; kgkp – generic services scheduling policies
kgl kgl2 kgl3 kgla kglp kglr kgls  dict/libcache generic library cache operation 
kgm kgmt  ilms support for inter language method services – or calling one language from another
kgrq kgsk kgski kgsn kgss  vos support for priority queue and scheduling; capabilities for Numa support;  Service State object manager
kgupa kgupb kgupd0 kgupf kgupg kgupi kgupl kgupm kgupp kgupt kgupx kguq2 kguu  vos Service related activities activities associated with for Process monitor (PMON); spawning or creating of background processes; debugging; managing process address space;  managing the background processes; etc.
kgxp  vos inter process communication related functions
kjak kjat kjb kjbl kjbm kjbr kjcc kjcs kjctc kjcts kjcv kjdd kjdm kjdr kjdx kjfc kjfm kjfs kjfz kjg kji kjl kjm kjp kjr kjs kjt kju kjx  ccl/dlm dlm related functionality ; associated with RAC or parallel server operation
kjxgf kjxgg kjxgm kjxgn kjxgna kjxgr  ccl/cgs provides communication & synchronisation associated with GMS or OPS related functionality as well as name service and OPS Instance Membership Recovery Facility
kjxt  ccl/dlm DLM request message management
kjzc kjzd kjzf kjzg kjzm  ccl/diag support for diagnosibility amongst OPS related services
kkb  dict/sqlddl support for operatoins which load/change table definitions
kkbl kkbn kkbo  objsupp/objddl support for tables with lobs , nested tables and varrays as well as columns with objects
kkdc kkdl kkdo  dict/dictlkup support for constraints, dictionary lookup and dictionary support for objects
kke  optim/cbo query engine cost engine; provides support functions that provide cost estimates for queries under a number of different circumstances
kkfd  sqlexec/pq support for performing parallel query operation
kkfi  optim/cbo optimizer support for matching of expressions against functional ndexes
kkfr kkfs  sqlexec/pq support for rowid range handling as well as for building parallel query query operations
kkj  jobqs/jobq job queue operation
kkkd kkki  dict/dbsched resource manager related support. Additionally, provides underlying functions provided by dbms_resource_manager and dbms_resource_manager_privs packages
kklr  dict/sqlddl provides functions used to manipulate LOGGING and/or RECOVERABLE attributes of an object (non-partitioned table or index or  partitions of a partitioned table or index)
kkm kkmi  dict/dictlkup provides various semantic checking functions 
kkn  ram/analyze support for the analyze command
kko kkocri  optim/cbo Cost based Optimizer operation : generates alternative execution plans in order to find the optimal / quickest access to the data.  Also , support to determine cost and applicability of  scanning a given index in trying to create or rebuild an index or a partition thereof
kkpam kkpap  ram/partnmap support for mapping predicate keys expressions to equivalent partitions
kkpo kkpoc kkpod  dict/partn support for creation and modification of partitioned objects
kkqg kkqs kkqs1 kkqs2 kkqs3 kkqu kkqv kkqw  optim/vwsubq query rewrite operation 
kks kksa kksh kksl kksm  dict/shrdcurs support for managing shared cursors/ shared sql
kkt  dict/sqlddl support for creating, altering and dropping trigger definitions as well as handling the trigger operation
kkxa  repl/defrdrpc underlying support for dbms_defer_query package operations
kkxb  dict/sqlddl library cache interface for external tables 
kkxl  dict/plsicds underlying support for the dbms_lob package
kkxm  progint/opi support for inter language method services
kkxs  dict/plsicds underlying support for the dbms_sys_sql package 
kkxt  repl/trigger support for replication internal trigger operation
kkxwtp  progint/opi entry point into the plsql compiler
kky  drv support for alter system/session commands
kkz kkzd kkzf kkzg kkzi kkzj kkzl kkzo kkzp kkzq kkzr kkzu kkzv  repl/snapshot support for snapshots or Materialized View validation and operation
kla klc klcli klx  tools/sqlldr support for direct path sql loader operation
kmc kmcp kmd kmm kmr  mts/mts support for Multi Threaded server operation (MTS) : manange and operate the virtual circuit mechanism, handle the dispatching of massages, administer shared servers and for collecting and maintaining statistics associated with MTS
knac knafh knaha knahc knahf knahs  repl/apply replication apply operation associated with Oracle streams
kncc  repl/repcache support for replication related information stored and maintained in library cache
kncd knce  repl/defrdrpc replication related enqueue and dequeue of transction data as well as other queue related operations 
kncog  repl/repcache support for loading replicaiton object group information into library cache
kni  repl/trigger support for replication internal trigger operation
knip knip2 knipi knipl knipr knipu knipu2 knipx  repl/intpkg support for replication internal package operation. 
kno  repl/repobj support for replication objects 
knp knpc knpcb knpcd knpqc knps  repl/defrdrpc operations assocaied with propagating transactions to a remote node and coordination of this activity.
knst  repl/stats replication statistics collection
knt kntg kntx  repl/trigger support for replication internal trigger operation
koc  objmgmt/objcache support for managing ADTs objects in the OOCI heap
kod  objmgmt/datamgr support for persistent storage for objects : for read/write objects, to manage object IDs, and to manage object concurrency and recovery. 
koh  objmgmt/objcache object heap manager provides memory allocation services for objects
koi  objmgmt/objmgr support for object types
koka  objsupp/objdata support for reading images, inserting images, updating images, and deleting images based on object references (REFs).
kokb kokb2  objsupp/objsql support for nested table objects
kokc  objmgmt/objcache support for pinning , unpinning and freeing objects
kokd  objsupp/datadrv driver on the server side for managing objects
koke koke2 koki  objsupp/objsql support for managing objects
kokl  objsupp/objdata lob access
kokl2  objsupp/objsql lob DML and programmatic interface support
kokl3  objsupp/objdata object temporary LOB support
kokle kokm  objsupp/objsql object SQL evaluation functions
kokn  objsupp/objname naming support for objects
koko  objsupp/objsup support functions to allow oci/rpi to communicate with Object Management Subsystem (OMS).
kokq koks koks2 koks3 koksr  objsupp/objsql query optimisation for objects , semantic checking and semantic rewrite operations
kokt kokt2 kokt3  objsupp/objddl object compilation type manager
koku kokv  objsupp/objsql support for unparse object operators and object view support
kol kolb kole kolf kolo  objmgmt/objmgr support for object Lob buffering , object lob evaluation and object Language/runtime functions for Opaque types
kope2 kopi2 kopo kopp2 kopu koputil kopz objmgmt/pickler 8.1 engine implementation,  implementation of image ops for 8.1+ image format together with various pickler related support functions
kos  objsupp/objsup object Stream interfaces for images/objects
kot kot2 kotg  objmgmt/typemgr support for dynamic type operations to create, delete, and  update types.
koxs koxx  objmgmt/objmgt object generic image Stream routines and miscellaneous generic object functions
kpcp kpcxlt  progint/kpc Kernel programmatic connection pooling and kernel programmatic common type XLT translation routines
kpki  progint/kpki kernel programatic interface support
kpls  cartserv/corecs support for string formatting operations
kpn  progint/kpn support for server to server communication 
kpoal8 kpoaq kpob kpodny kpodp kpods kpokgt kpolob kpolon kpon  progint/kpo support for programmatic operations 
kpor  progint/opi support for streaming protocol used by replication
kposc  progint/kpo support for scrollable cursors
kpotc  progint/opi oracle side support functions for setting up trusted external procedure callbacks
kpotx kpov  progint/kpo support for managing local and distributed transaction coordination.
kpp2 kpp3  sqllang/parse kpp2 – parse routines for dimensions;
kpp3 – parse support for create/alter/drop summary  statements
kprb kprc  progint/rpi support for executing sql efficiently on the Oracle server side as well as for copying data types during rpi operations
kptsc  progint/twotask callback functions provided to all streaming operation as part of replication functionality 
kpu kpuc kpucp  progint/kpu Oracle kernel side programmatic user interface,  cursor management functions and client side connection pooling support
kqan kqap kqas  argusdbg/argusdbg server-side notifiers and callbacks for debug operations. 
kql kqld kqlp  dict/libcache SQL Library Cache manager – manages the sharing of sql statements in the shared pool
kqr  dict/rowcache row cache management. The row cache consists of a set of facilities to provide fast access to table definitions and locking capabilities.
krbi krbx krby krcr krd krpi  rcv Backup and recovery related operations :
krbi – dbms_backup_restore package underlying support.; krbx –  proxy copy controller; krby – image copy; krcr – Recovery Controlfile Redo; krd – Recover Datafiles (Media & Standby Recovery);  krpi – support for the package : dbms_pitr
krvg krvt  rcv/vwr krvg – support for generation of redo associated with DDL; krvt – support for redo log miner viewer (also known as log miner)
ksa ksdp ksdx kse ksfd ksfh ksfq ksfv ksi ksim ksk ksl ksm ksmd ksmg ksn ksp kspt ksq ksr kss ksst ksu ksut  vos support for various kernel associated capabilities
ksx sqlexec/execsvc support for query execution associated with temporary tables
ksxa ksxp ksxr  vos support for various kernel associated capabilities in relation to OPS or RAC operation
kta  space/spcmgmt support for DML locks and temporary tables associated with table access
ktb ktbt ktc  txn/lcltx transaction control operations at the block level : locking block, allocating space within the block , freeing up space, etc.
ktec ktef ktehw ktein ktel kteop kteu  space/spcmgmt support for extent management operations :
ktec – extent concurrency operations; ktef – extent format; ktehw – extent high water mark operations; ktein – extent  information operations; ktel – extent support for sql loader; kteop – extent operations : add extent to segment, delete extent, resize extent, etc. kteu – redo support for operations changing segment header / extent map
ktf  txn/lcltx flashback support
ktfb ktfd ktft ktm  space/spcmgmt ktfb – support for bitmapped space manipulation of files/tablespaces;  ktfd – dictionary-based extent management; ktft – support for temporary file manipulation; ktm – SMON operation
ktp ktpr ktr ktri  txn/lcltx ktp – support for parallel transaction operation; ktpr – support for parallel transaction recovery; ktr – kernel transaction read consistency; 
ktri – support for dbms_resumable package
ktsa ktsap ktsau ktsb ktscbr ktsf ktsfx ktsi ktsm ktsp ktss ktst ktsx ktt kttm  space/spcmgmt support for checking and verifying space usage
ktu ktuc ktur ktusm  txn/lcltx internal management of undo and rollback segments
kwqa kwqi kwqic kwqid kwqie kwqit kwqj kwqm kwqn kwqo kwqp kwqs kwqu kwqx  oltp/qs support for advanced queuing :
kwqa – advanced queue administration; kwqi – support for AQ PL/SQL trusted callouts; kwqic – common AQ support functions; kwqid – AQ dequeue support; kwqie – AQ enqueu support ; kwqit – time management operation ; kwqj – job queue scheduler for propagation; kwqm – Multiconsumer queue IOT support; kwqn – queue notifier; kwqo – AQ support for checking instType checking options; kwqp – queueing propagation; kwqs – statistics handling; kwqu – handles lob data. ; kwqx – support for handling transformations
kwrc kwre  oltp/re rules engine evaluation
kxcc kxcd kxcs  sqllang/integ constraint processing
kxdr sqlexec/dmldrv DML driver entrypoint 
kxfp kxfpb kxfq kxfr kxfx  sqlexec/pq parallel query support
kxhf kxib  sqlexec/execsvc khhf- support for hash join file and memory management; kxib – index buffering operations
kxs  dict/instmgmt support for executing shared cursors
kxti kxto kxtr  dbproc/trigger support for trigger operation
kxtt  ram/partnmap support for temporary table operations
kxwph  ram/data support for managing attributes of the segment of a table / cluster / table-partition
kza  security/audit support for auditing operations 
kzar  security/dac support for application auditing
kzck  security/crypto encryption support
kzd  security/dac support for dictionary access by security related functions 
kzec  security/dbencryption support inserting and retrieving encrypted objects into and out of the database
kzfa kzft  security/audit support for fine grained auditing
kzia  security/logon identification and authentication operations
kzp kzra kzrt kzs kzu kzup  security/dac security related operations associated with privileges 
msqima msqimb  sqlexec/sqlgen support for generating sql statments
ncodef npi npil npixfr  progint/npi support for managing remote network connection from  within the server itself
oba  sqllang/outbufal operator buffer allocate for various types of operators : concatenate, decode, NVL, etc.  the list is extensive.
ocik  progint/oci OCI oracle server functions
opiaba opidrv opidsa opidsc opidsi opiexe opifch opiino opilng opipar opipls opirip opitsk opix  progint/opi OPI Oracle server functions – these are at the top of the server stack and are called indirectly by ythe client in order to server the client request.
orlr  objmgmt/objmgr support for  C langauge interfaces to user-defined types (UDTs) 
orp  objmgmt/pickler oracle’s external pickler / opaque type interfaces
pesblt pfri pfrsqc  plsql/cox pesblt – pl/sql built in interpreter; pfri – pl/sql runtime; pfrsqc – pl/sql callbacks for array sql and dml with returning
piht  plsql/gen/utl support for pl/sql implementation of utl_http package
pirg  plsql/cli/utl_raw support for pl/sql implementation of utl_raw package
pism  plsql/cli/utl_smtp support for pl/sql implementation of utl_smtp package
pitcb  plsql/cli/utl_tcp support for pl/sql implementation of utl_tcp package
piur  plsql/gen/utl_url support for pl/sql implementation of utl_url package
plio  plsql/pkg pl/sql object instantiation 
plslm  plsql/cox support for NCOMP processing
plsm pmuc pmuo pmux  objmgmt/pol support for pl/sql handling of collections
prifold priold  plsql/cox support to allow rpc forwarding to an older release 
prm  sqllang/param parameter handling associated with sql layer
prsa prsc prssz  sqllang/parse prsa – parser for alter cluster command; prsc – parser for create database command; prssz – support for parse context to be saved
psdbnd psdevn  progint/dbpsd psdbnd – support for managing bind variables; psdevn – support for pl/sql debugger
psdicd  progint/plsicds small number of ICD to allow pl/sql to call into ‘C’ source
psdmsc psdpgi  progint/dbpsd psdmsc – pl/sql system dependent miscellaneous functions ; psdpgi – support for opening and closing cursors in pl/sql
psf  plsql/pls pl/sql service related functions for instantiating called pl/sql unit in library cache
qbadrv qbaopn  sqllang/qrybufal provides allocation of buffer and control structures in query execution 
qcdl qcdo  dict/dictlkup qcdl – query compile semantic analysis; qcdo – query compile dictionary support for objects
qci  dict/shrdcurs support for SQL language parser and semantic analyser
qcop qcpi qcpi3 qcpi4 qcpi5  sqllang/parse support for query compilation parse phase
qcs qcs2 qcs3 qcsji qcso  dict/dictlkup support for semantic analysis by SQL compiler
qct qcto  sqllang/typeconv qct – query compile type check operations; qcto –  query compile type check operators
qcu  sqllang/parse various utilities provided for sql compilation
qecdrv  sqllang/qryedchk driver performing high level checks on sql language query capabilities
qerae qerba qerbc qerbi qerbm qerbo qerbt qerbu qerbx qercb qercbi qerco qerdl qerep qerff qerfi qerfl qerfu qerfx qergi qergr qergs qerhc qerhj qeril qerim qerix qerjm qerjo qerle qerli qerlt qerns qeroc qeroi qerpa qerpf qerpx qerrm qerse qerso qersq qerst qertb qertq qerua qerup qerus qervw qerwn qerxt  sqlexec/rowsrc row source operators :
qerae – row source (And-Equal) implementation; qerba – Bitmap Index AND row source; qerbc – bitmap index compaction row source; qerbi – bitmap index creation row source; qerbm – QERB Minus row source; qerbo  – Bitmap Index OR row source; qerbt – bitmap convert row source; qerbu – Bitmap Index Unlimited-OR row source; qerbx – bitmap index access row source; qercb – row source: connect by; qercbi – support for connect by; qerco – count row source; qerdl – row source delete; qerep – explosion row source; qerff – row source fifo buffer; qerfi  – first row row source; qerfl  – filter row source definition; qerfu – row source: for update; qerfx – fixed table row source; qergi – granule iterator row source; qergr – group by rollup row source; qergs – group by sort row source; qerhc – row sources hash clusters; qerhj – row source Hash Join;  qeril  – In-list row source; qerim – Index Maintenance row source; qerix – Index row source; qerjo – row source: join; qerle – linear execution row source implementation; qerli – parallel create index; qerlt – row source populate Table;  qerns  – group by No Sort row source; qeroc – object collection iterator row source; qeroi – extensible indexing query component; qerpa – partition row sources; qerpf – query execution row source: prefetch; qerpx – row source: parallelizer; qerrm – remote row source; qerse – row source: set implementation; qerso – sort row source; qersq – row source for sequence number; qerst  – query execution row sources: statistics; qertb – table row source; qertq  – table queue row source; qerua – row source : union-All;
qerup – update row source; qerus – upsert row source ; qervw – view row source; qerwn – WINDOW row source; qerxt – external table fetch row source
qes3t qesa qesji qesl qesmm qesmmc  sqlexec/execsvc run time support for sql execution
qkacon qkadrv qkajoi qkatab qke qkk qkn qkna qkne  sqlexec/rwsalloc SQL query dynamic structure allocation routines
qks3t  sqlexec/execsvc query execution service associated with temp table transformation
qksmm qksmms qksop  sqllang/compsvc qksmm –  memory management services for the SQL compiler; qksmms – memory management simulation services for the SQL compiler; qksop – query compilation service for operand processing
qkswc  sqlexec/execsvc support for temp table transformation associated for with clause.
qmf  xmlsupp/util support for ftp server; implements processing of ftp commands
qmr qmrb qmrs  xmlsupp/resolver support hierarchical resolver 
qms  xmlsupp/data support for storage and retrieval of XOBs
qmurs  xmlsupp/uri support for handling URIs
qmx qmxsax  xmlsupp/data qmx – xml support; qmxsax – support for handling sax processing
qmxtc  xmlsupp/sqlsupp support for ddl  and other operators related to the sql XML support
qmxtgx  xmlsupp support for transformation : ADT -> XML
qmxtsk  xmlsupp/sqlsupp XMLType support functions 
qsme  summgmt/dict summary management expression processing
qsmka qsmkz  dict/dictlkup qsmka – support to analyze request in order to determine whether a summary could be created that would be useful; qsmkz – support for create/alter summary semantic analysis 
qsmp qsmq qsmqcsm qsmqutl  summgmt/dict qsmp – summary management partition processing; qsmq – summary management dictionary access; qsmqcsm – support for create / drop / alter summary and related dimension operations; qsmqutl – support for summaries 
qsms  summgmt/advsvr summary management advisor
qxdid  objsupp/objddl support for domain index ddl operations
qxidm  objsupp/objsql support for extensible index dml operations
qxidp  objsupp/objddl support for domain index ddl partition operations
qxim  objsupp/objsql extensible indexing support for objects
qxitex qxopc qxope  objsupp/objddl qxitex – support for create / drop indextype; qxope – execution time support for operator  callbacks; qxope – execution time support for operator DDL
qxopq qxuag qxxm  objsupp/objsql qxopq – support for queries with user-defined operators; qxuag – support for user defined aggregate processing; qxxm – queries involving external tables 
rfmon rfra rfrdb rfrla rfrm rfrxpt  drs implements 9i data guard broker monitor 
rnm  dict/sqlddl manages rename statement operation
rpi  progint/rpi recursive procedure interface which handles the the environment setup where multiple recursize statements are executed from one top level statement
rwoima  sqlexec/rwoprnds row operand operations
rwsima  sqlexec/rowsrc row source implementation/retrieval according to the defining query
sdbima  sqlexec/sort manages and performs sort operation
selexe  sqlexec/dmldrv handles the operation of select statement execution
skgm  osds platform specific memory management rountines interfacing with O.S. allocation functions
smbima sor  sqlexec/sort manages and performs sort operation
sqn  dict/sqlddl support for parsing references to sequences
srdima srsima stsima  sqlexec/sort manages and performs sort operation
tbsdrv  space/spcmgmt operations for executing create / alter / drop tablespace and related supporting functions
ttcclr ttcdrv ttcdty ttcrxh ttcx2y  progint/twotask two task common layer which provides high level interaction and negotiation functions for Oracle client when communicating with the server.  It also provides important function of converting client side data / data types into equivalent on the server and vice versa
uixexe ujiexe updexe upsexe  sqlexec/dmldrv support for : index maintenance operations, the execution of the update statement and associated actions connected with update as well as the upsert command which combines the operations of update and insert
vop  optim/vwsubq view optimisation related functionality
xct  txn/lcltx support for the management of transactions and savepoint operations
xpl  sqlexec/expplan support for the explain plan command
xty  sqllang/typeconv type checking functions
zlke  security/ols/intext label security error handling component




  • Oracle Database Products > Oracle Database > Oracle Database > Oracle Server – Enterprise Edition
  • Oracle Database Products > Oracle Database > Oracle Database > Oracle Server – Personal Edition
  • Oracle Database Products > Oracle Database > Oracle Database > Oracle Server – Standard Edition




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