Oracle Database Errors or Warnings from Error ORA-16509 to ORA-16528
ORA-16509: request timed out
Cause: The Data Guard broker timed out out the request.
Action: Check the Data Guard broker log file for more information. Ensure that the network connections between the databases are functioning properly and retry the request.
ORA-16513: maximum requests exceeded
Cause: The maximum number of requests that the broker can service
Action: Wait for the broker to complete processing the requests before issuing more requests.
ORA-16514: request was not found
Cause: An attempt was made to read a response but a matching request was not found.
Action: Verify request identifier is valid and that it references a previously issued request.
ORA-16516: current state is invalid for the attempted operation
Cause: The broker may have returned this error for either switchover operations or for database state change operations. If this error was returned for a switchover operation, the broker determined that either:
– The databases changing roles are shut down.
– The primary database is not shipping redo data.
– The standby database that will become the primary database is not applying redo data. If this error was returned for database state change operations, the database state specified was invalid.
Action: If this error is returned when attempting a switchover operation, make sure that:
– The databases changing roles are started.
– The primary database is shipping redo data.
– The standby database is applying redo data. If this error is returned when attempting a database state change operation, make sure a valid database state is specified.
ORA-16523: operation requires the client to connect to instance “string”
Cause: The switchover or failover operation required the client to connect to the apply instance of the target database.
Action: Connect to the indicated instance and reissue the SWITCHOVER or FAILOVER command.
ORA-16524: unsupported operation
Cause: A command or option was not supported in this release.
Action: Contact Oracle Support Services.
ORA-16525: the Data Guard broker is not yet available
Cause: The Data Guard broker process was either not yet started, was initializing, or failed to start.
Action: If the broker has not been started, set the DG_BROKER_START initialization parameter to true and allow the broker to finish initializing before making the request. If the broker failed to start, check the Data Guard log for possible errors. Otherwise, retry the operation.
ORA-16526: unable to allocate task element
Cause: The Data Guard broker was unable to allocate memory for a request.
Action: Increase the size of the SGA.
ORA-16527: unable to allocate broker SGA memory
Cause: The Data Guard broker was unable to allocate memory within the SGA.
Action: Increase the size of the SGA memory.
ORA-16528: unable to allocate PGA memory
Cause: There was insufficient space in PGA to allocate memory.
Action: Increase process virtual memory.
Above are list of Oracle Database Errors or Warnings from Error ORA-16509 to ORA-16528 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.