This document provides explanations and resolutions for various Oracle database errors. It lists several common error codes like ORA-00001, ORA-00054, ORA-00257, ORA-00600, ORA-12154, and ORA-03113. For each error, it describes the error message, reason, and recommended steps to resolve the issue such as dropping constraints, retrying queries, checking storage space, and reconfiguring tnsnames.ora files. The document is prepared by Ravi Kumar Lanke and spans 6 pages of technical information on Oracle database errors and troubleshooting steps.

1. PREPARED BY RAVI KUMAR LANKE Page 1
Oracle Database Error with solution.
Error-:ORA-04031: unable to allocate 32 bytes of shared memory ("shared pool","select
decode(failover_metho...","sql area","tmp")
Solution-:
SQL> alter system flush shared_pool;
System altered.
Error Code ORA-00001
Error
Message
ORA-00001: unique constraint (constraint_name) violated
Error Reason
An INSERT or UPDATE statement execution which violating the
unique key constraint on the Table
Error
Resolution
1)Drop The unique Constraint
2)Allow duplicates by droping the constraint
Error Code ORA-00054
Error
Message
ORA-00054: resource busy and acquire with NOWAIT specified
Error Reason An insert or update or select command against a LOCK Table
Error
Resolution
1)Try to execute the statment after sometime
2)Execute the command with a NOWAIT commands

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Error Code ORA-00257
Error
Message
ORA-00257: archiver is stuck. CONNECT INTERNAL only, until freed
Error Reason Error occurs at the archival of the redo logs
Error
Resolution
1)Check the storage space availabilty
2)Check the initialization paramter ARCHIVE_LOG_DEST
Error Code ORA-00600
Error
Message
ORA-00600
Error Reason
Internal Error generated by generic kernal code of the Oracle
Software
Error
Resolution
Should be reported to oracle support
Error Code ORA-12154
Error
Message
ORA-12154: TNS:could not resolve service name
Error Reason
This error occurs due to missing tnsnames.ora file or tnsname.ora
file not configured properly .
Error
Resolution
Reconfigure the tnsname.ora

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Error Code ORA-03113
Error
Description
ORA-03113: end-of-file on communication channel
Error -
Reason
An unexpected end of file occured During communication
Error
Resolution
1)Check the network may be the network went down
2)check the server may be the server down
Error Code ORA-00936
Error
Description
ORA-00936: missing expression
Error -
Reason
missing sysntax when executing SQL statments
Error
Resolution
1) Check your statement sytax properly
Error Code ORA-01017
Error
Description
ORA-01017: invalid username/password; logon denied
Error -
Reason
Login activity uisng worng database credentials
Error
Resolution
1) Enter the login credentials properly
Error Code ORA-01555
Error
Description
ORA-01555: snapshot too old (rollback segment too small)
Error -
Reason
Insufficient Rollback segments
Error
Resolution
1) Make larger rollback segments

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Error Code ORA-04031
Error
Description
ORA-04031: unable to allocate num bytes of shared memory
Error -
Reason
More usage of shared memory than availabe
Error
Resolution
1. Reduce the use of shared memory availabe.
2. Increase the SHARED_POOL_SIZE paramter
Error Code ORA-01031
Error
Description
ORA-01031: insufficient privileges
Error -
Reason
Due to the lack of the privileges for the login user to thedatabase
objects
Error
Resolution
Contact the Oracle DBA for accessing privilages
Error Code ORA-01000
Error
Description
ORA-01000: maximum open cursors exceeded
Error -
Reason
Each user is restricted in using the number of cursors at a time .
You may get this error when your cursor limit exeeds the set
parameter
Error
Resolution
shut down Oracle database , increase the OPEN_CURSORS
parameter in the initialization file, and restart Oracle database .
Error Code ORA-12560
Error
Description
ORA-12560: TNS:protocol adapter error
Error -
Reason
This is an error related to the protocol adaptor
Error
Resolution
Check the Protcol specification

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Error Code ORA-27101
Error
Description
ORA-27101: shared memory realm does not exist
Error -
Reason
Unable to locate the shared memory realm
Error
Resolution
Make sure that ORACLE_SID and ORACLE_HOME are correct.
A tralling slash on the ORACLE_HOME can cause error
ORACLE_HOME=’/home/oracle/prod’ —- Correct
ORACLE_HOME=’/home/oracle/prod/’ —-Wrong
Error Code ORA-04030
Error
Description
ORA-04030: out of process memory
Error -
Reason
This is a common error while running import . This error is related
to RAM settings. If the server having low RAM and memeory
parameters are configured with a high configuration causes this
error
Error
Resolution
The best solution is to increase the RAM of the server if your server
running with a low RAM other option is
to Increasepga_aggregate_target
Error Code ORA-00020
Error
Description
ORA-00020: maximum number of processes (%s) exceeded
Error -
Reason
Maximum number of processes are exceeded than the limit in
oracle database
Error
Resolution
Login as SYSDBA and kill the unwanted sessions

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Error Code ORA-04030
Error
Description
ORA-04030: out of process memory
Error -
Reason
This is a common error while running import . This error is related
to RAM settings. If the server having low RAM and memeory
parameters are configured with a high configuration causes this
error
Error
Resolution
The best solution is to increase the RAM of the server if your server
running with a low RAM other option is
to Increasepga_aggregate_target
Error Code ORA-04030
Error
Description
ORA-04030: out of process memory
Error -
Reason
This is a common error while running import . This error is related
to RAM settings. If the server having low RAM and memeory
parameters are configured with a high configuration causes this
error
Error
Resolution
The best solution is to increase the RAM of the server if your server
running with a low RAM other option is
to Increasepga_aggregate_target