Oracle Error 12801
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ora-12801 error signaled in parallel query server p008 Parallel query error ORA-12801 Oracle Database Tips by Burleson Consulting Question: When running Oracle parallel query, I get a sporadic error like this: ora-12801 error signaled in parallel query server p004 ERROR: ORACLE execute error: ORA-12801: error signaled in parallel query server P017 ORA-01652: unable to extend temp segment by 314 in tablespace TEMP. I understand the ORA-01652 as being caused by running out of space, but I do not understand the ORA-12801. Answer: Wow, P017, that's a lot ofOra-12801 Error Signaled In Parallel Query Server P000 Instance
parallel query processes. Just make sure that you have enough processors to support this load. I've seen this ORA-12801 error pop-up intermittently for no apparent reason, usually when the server is especially active, and it's always the second message (in your case, ORA-01652). MOSC note 184416.1 has details on diagnosing the ORA-12801 error. It notes that the ORA-12801 is somewhat generic and that you should look for more details in your alert.log or in trace files in the USER_DUMP_DEST or BACKGROUND_DUMP_DEST location. You can set event 10397 to get more details: ORA-12801, 00000, "error signaled in parallel query server %s" Cause: A parallel query server reached an exception condition. Action: Check the following error message for the cause, and consult your error manual for the appropriate action. *Comment: This error can be turned off with event 10397, in which case the server's actual error is signaled instead. In an
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Ora 12801 Error Signaled In Parallel Query Server P003
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Operation. Query Failing: SELECT COUNT(*) FROM SALES_MASTER_HISTORY WHERE TREASURYNUMBER < 20000; ORA-12801: error signaled in parallel query server P001 ORA-01722: invalid number When i check degree on this table it was set to 1 so no problem found there but degree with above table indexes was set to 4. I changed the degree to 1 to sort first issue as below: SQL> SQL> select owner,table_name,degree from dba_tables where table_name in ('SALES_MASTER_HISTORY'); OWNER TABLE_NAME DEGREE ------------------------------ ------------------------------ ---------- CAP SALES_MASTER_HISTORY 1 SQL> select index_name,degree from dba_indexes where table_name in ('SALES_MASTER_HISTORY'); INDEX_NAME DEGREE ------------------------------ ---------------------------------------- IDX_TMH_NETTEDBOOKINGREF 4 IDX_VALUEDATE 4 PK_TRADES_MASTER_HISTORY 4 IDX_TMH_CORESYSREF 4 IDX_TMH_TRUNC_BOOKEDDATE_IDX 4 IDX_TMH_BRANCH_CODE 4 IDX_TMH_CUSTOMER_NUMBER 4 IDX_TMH_BROKERCODE 4 IDX_BOOKEDDATE 4 IDX_TMH_CONTRACTNUMBER 4 IDX_TMH_CUSTOMER 4 11 rows selected. SQL> alter index CAP.IDX_BOOKEDDATE parallel 1; Index altered. SQL> alter index CAP.IDX_TMH_BRANCH_CODE parallel 1; Index altered. SQL> alter index CAP.IDX_TMH_BROKERCODE parallel 1; Index altered. SQL> alter index CAP.IDX_TMH_CONTRACTNUMBER parallel 1; Index altered. SQL> alter index CAP.IDX_TMH_CUSTOMER_NUMBER parallel 1; Index altered. SQL> alter index CAP.IDX_TMH_NETTEDBOOKINGREF parallel 1; Index altered. SQL> alter index CAP.IDX_VALUEDATE parallel 1; Index altered. SQL> alter index CAP.PK_TRADES_MASTER_HISTORY parallel 1; Index altered. SQL> alter index CAP.IDX_TMH_TRUNC_BOOKEDDATE_IDX parallel 1; Index altered. SQL> select owner,index_name,degree from dba_indexes where table_name in ('SALES_MASTER_HISTORY') order by INDEX_NAME; OWNER INDEX_NAME DEGREE ------------------------------ ------------------------------ ---------------------------------------- CAPFX IDX_BOOKEDDATE 1 CAPFX IDX_TMH_BRANCH_CODE 1 CAPFX IDX_TMH_BROKERCODE 1 CAPFX IDX_TMH_CONTRACTNUMBER 1 CAPFX IDX_TMH_CORESYSREF 1 CAPFX IDX_TMH_CUSTOMER 1 CAPFX IDX_TMH_CUSTOMER_NUMBER 1 CAPFX IDX_TMH_NETTEDBOOKINGREF 1 CAPFX IDX_TMH_TRUNC_BOOKEDDATE_IDX 1 CAPFX IDX_VALUEDATE 1 CAPFX PK_TRADES_MASTER_HISTORY 1 After that wh