Oracle Database Errors or Warnings from Error ORA-00025 to ORA-00040
ORA-00025: failed to allocate string
Cause: Out of memory.
Action: Restart with larger sga heap.
ORA-00026: missing or invalid session ID
Cause: Missing or invalid session ID string for ALTER SYSTEM KILL SESSION.
Action: Retry with a valid session ID.
ORA-00027: cannot kill current session
Cause: Attempted to use ALTER SYSTEM KILL SESSION to kill the current session.
ORA-00028: your session has been killed
Cause: A privileged user has killed your session and you are no longer logged on to the database.
Action: Login again if you wish to continue working.
ORA-00029: session is not a user session
Cause: The session ID specified in an ALTER SYSTEM KILL SESSION command was not a user session (for example, recursive, etc.).
Action: Retry with a user session ID.
ORA-00030: User session ID does not exist.
Cause: The user session ID no longer exists, probably because the session was logged out.
Action: Use a valid session ID.
ORA-00031: session marked for kill
Cause: The session specified in an ALTER SYSTEM KILL SESSION command cannot be killed immediately (because it is rolling back or blocked on a network operation), but it has been marked for kill. This means it will be killed as soon as possible after its current uninterruptable operation is done.
Action: No action is required for the session to be killed, but further executions of the ALTER SYSTEM KILL SESSION command on this session may cause the session to be killed sooner.
ORA-00032: invalid session migration password
Cause: The session migration password specified in a session creation call was invalid (probably too long).
Action: Retry with a valid password (less than 30 chars).
ORA-00033: current session has empty migration password
Cause: An attempt was made to detach or clone the current session and it has an empty migration password. This is not allowed.
Action: Create the session with a non-empty migration password.
ORA-00034: cannot string in current PL/SQL session
Cause: An attempt was made to issue a commit or rollback from a PL/SQL object (procedure, function, package) in a session that has this disabled (by ‘alter session disable commit in procedure’)
Action: Enable commits from PL/SQL in this session, or do not attempt to use commit or rollback in PL/SQL when they are disabled in the current session.
ORA-00036: maximum number of recursive SQL levels (string) exceeded
Cause: An attempt was made to go more than the specified number of recursive SQL levels.
Action: Remove the recursive SQL, possibly a recursive trigger.
ORA-00037: cannot switch to a session belonging to a different server group
Cause: An attempt was made to switch to a session in a different server group. This is not allowed.
Action: Make sure the server switches to a session that belongs to its server group.
ORA-00038: Cannot create session: server group belongs to another user
Cause: An attempt was made to create a non-migratable session in a server group that is owned by a different user.
Action: A server group is owned by the first user who logs into a server in the server group in non-migratable mode. All subsequent non-migratable mode logins must be made by the user who owns the server group. To have a different user login in non-migratable mode, the ownership of the server group will have to be changed. This can be done by logging off all current sessions and detaching from all existing servers in the server group and then having the new user login to become the new owner.
ORA-00039: error during periodic action
Cause: An unexpected error occurred while executing a periodically invoked
Action: Check the error stack for detailed error information.
ORA-00040: active time limit exceeded – call aborted
Cause: The Resource Manager SWITCH_TIME limit was exceeded.
Action: Reduce the complexity of the update or query, or contact your database administrator for more information.
Above are list of Oracle Database Errors or Warnings from Error ORA-00025 to ORA-00040 received while performing certain operation against Oracle Database or related products.
What are Oracle Database Error Messages?
Oracle Error Messages may be returned while using products which are part of Oracle Database. Each Oracle Database Error or Warning Message mentioned above contains the Warning or Error Message Statement, a short explanation of the probable causes of the Error message, and a recommended action.
Hope this was helpful.
Information about Oracle Database Error Messages or Warning Messages on Windows and Linux Operating Systems.