Oracle Database Errors or Warnings from Error ORA-12807 to ORA-12818

SQLServerF1

ORA-12807: process queue could not receive parallel query message
Cause: Internal error.
Action: This error should not normally occur. If it persists, contact Oracle Support Services.
ORA-12808: cannot set string_INSTANCES greater than number of instances string
Cause: An attempt was made to set SCAN_INSTANCES or CACHE_INSTANCES using the ALTER SYSTEM command to a value larger than the number of available instances.
Action: See the accompanying message for the current allowable maximum value, or set SCAN_INSTANCES / CACHE_INSTANCES to ALL.
ORA-12809: cannot set string_INSTANCES when mounted in exclusive mode
Cause: An attempt was made to set SCAN_INSTANCES or CACHE_INSTANCES using the ALTER SYSTEM command while the database was mounted in exclusive mode.
Action: SCAN_INSTANCES / CACHE_INSTANCES may not be set unless running Oracle Real Application Clusters mounted in CLUSTER_DATABASE mode.

ORA-12810: PARALLEL_MAX_SERVERS must be less than or equal to string
Cause: An attempt was made to set the PARALLEL_MAX_SERVERS parameter to a value higher than the maximum allowed by the system.
Action: Set PARALLEL_MAX_SERVERS to a value less than or equal to the maximum specified in the accompanying message and retry.
ORA-12811: PARALLEL_MIN_SERVERS must be less than or equal to PARALLEL_MAX_SERVERS, string
Cause: An attempt was made to set the PARALLEL_MIN_SERVERS parameter to a value higher than PARALLEL_MAX_SERVERS.
Action: Set PARALLEL_MIN_SERVERS to a value less than or equal to PARALLEL_MAX_SERVERS (indicated in the accompanying message) and retry.
ORA-12812: only one PARALLEL or NOPARALLEL clause may be specified
Cause: PARALLEL was specified more than once, NOPARALLEL was specified more than once, or both PARALLEL and NOPARALLEL were specified in a CREATE TABLE, CLUSTER, or INDEX or in an ALTER TABLE or CLUSTER statement, or in a RECOVER command.
Action: Remove all but one of the PARALLEL or NOPARALLEL clauses and reissue the statement.

ORA-12813: value for PARALLEL or DEGREE must be greater than 0
Cause: PARALLEL 0 or DEGREE 0 was specified in a CREATE TABLE, CLUSTER, or INDEX or in an ALTER TABLE or CLUSTER statement.
Action: Specify a degree of parallelism greater than 0 or specify default parallelism using PARALLEL with no degree or using DEGREE DEFAULT within a PARALLEL clause.
ORA-12814: only one CACHE or NOCACHE clause may be specified
Cause: CACHE was specified more than once, NOCACHE was specified more than once, or both CACHE and NOCACHE were specified in a CREATE TABLE or CLUSTER, or in an ALTER TABLE or CLUSTER statement.
Action: Remove all but one of the CACHE or NOCACHE clauses and reissue the statement.
ORA-12815: value for INSTANCES must be greater than 0
Cause: PARALLEL parameter specifying number of instances must be a positive integer or DEFAULT
Action: specify a positive integer or DEFAULT for INSTANCES if parallelism across instances is desired.
ORA-12817: parallel query option must be enabled
Cause: A parallel query option feature has been invoked but this option has not been enabled.
Action: Enable the parallel query option.
ORA-12818: invalid option in PARALLEL clause
Cause: an unrecognized option was used within a PARALLEL clause.
Action: specify any combination of DEGREE { <n> | DEFAULT } and INSTANCES { <n> | DEFAULT } within the PARALLEL clause.

Above are list of Oracle Database Errors or Warnings from Error ORA-12807 to ORA-12818 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.

Thanks,
SQLServerF1 Team
Information about Oracle Database Error Messages or Warning Messages on Windows and Linux Operating Systems.

 

Leave a Reply

Your email address will not be published. Required fields are marked *