Error Signaled In Parallel Query Server P004 Ora-12801
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Ora 12801 Error Signaled In Parallel Query Server P004 Oracle
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Parallel ora 12801 error signaled in parallel query server p003 query error ORA-12801 Oracle Database Tips by Burleson Consulting Question: When running Oracle parallel query, I get a sporadic error like this: ERROR:Ora 12801 Error Signaled In Parallel Query Server P002 Oracle
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 of parallel query ora 12801 error signaled in parallel query server p011 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 any case, the central question
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more about Stack Overflow the company Business Learn more about hiring developers or posting ads with us ora-12801 ora-01722 Stack Overflow Questions Jobs Documentation Tags Users Badges Ask Question x Dismiss Join the Stack Overflow Community Stack Overflow is a community of 4.7 million programmers, just like http://www.dba-oracle.com/t_ora_12801_parallel_query.htm you, helping each other. Join them; it only takes a minute: Sign up ORA-12801: error signaled in parallel query server P004 and ORA-01555: snapshot too old up vote 0 down vote favorite I am executing a insert into ... select ... from ... where ... SQL and got following error using Oracle: java.sql.SQLException: ORA-12801: error signaled http://stackoverflow.com/questions/29579352/ora-12801-error-signaled-in-parallel-query-server-p004-and-ora-01555-snapshot in parallel query server P004 ORA-01555: snapshot too old: rollback segment number 32 with name "_SYSSMU32_2039035886$" too small I read the following doc: http://www.dba-oracle.com/t_ora_12801_parallel_query.htm and http://www.dba-oracle.com/t_ora_01555_snapshot_old.htm Saying ORA-12801 is caused by no enough processors to support parallel query. ORA-01555 error relates to insufficient undo storage or a too small value for the undo_retention parameter. But how can I check related parameters to avoid such issue recur? sql oracle oracle11g oracle10g share|improve this question asked Apr 11 '15 at 15:04 coderz 1,57641333 add a comment| 1 Answer 1 active oldest votes up vote 3 down vote accepted From the manual: ORA-12801: error signaled in parallel query server string 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. This is a generic error message and almost never has anything to do with not enough processors. This is an example of how the site you linked to often contains lots bad or ou
and ora-01722 when using PARALLEL hint If this is your first visit, be sure to check out the FAQ by clicking the link above. You http://www.dbasupport.com/forums/showthread.php?42292-ora-12801-and-ora-01722-when-using-PARALLEL-hint may have to register before you can post: click the register link above to proceed. To start viewing messages, select the forum that you want to visit from the selection https://myoraclehome.wordpress.com/2010/07/28/oracle-parallel-query/ below. Results 1 to 6 of 6 Thread: ora-12801 and ora-01722 when using PARALLEL hint Tweet Thread Tools Show Printable Version Email this Page… Subscribe to this Thread… Display Linear error signaled Mode Switch to Hybrid Mode Switch to Threaded Mode 04-06-2004,04:24 PM #1 samdba View Profile View Forum Posts Advisor Join Date Dec 2001 Location USA Posts 620 ora-12801 and ora-01722 when using PARALLEL hint Hi all, I am getting foll. error when using PARALLEL hint and works fine without the hint. ora-12801: error signaled in parallel query server P005 ora-01722: invalid error signaled in number This error comes on the foll. line in SQL statement. AND papfa.person_id = DECODE(haaif.attribute3,NULL,papfss.person_id,TO_NUMBER(haaif.attribute3)) What could be the reason? Thanks in Adv. Sam ------------------------ To handle yourself, use your head. To handle others, use your heart Reply With Quote 04-06-2004,04:41 PM #2 slimdave View Profile View Forum Posts Visit Homepage Foreign Script Kiddie Join Date Aug 2002 Location Colorado Springs Posts 5,253 haaif.attribute3 contains strings that cannot be converted to numbers David Aldridge, "The Oracle Sponge" Senior Manager, Business Intelligence Development XM Satellite Radio Washington, DC Oracle ACE Reply With Quote 04-06-2004,04:52 PM #3 jmodic View Profile View Forum Posts Super Moderator Join Date Dec 2000 Location Ljubljana, Slovenia Posts 4,439 Originally posted by slimdave haaif.attribute3 contains strings that cannot be converted to numbers Most obvous answer. However: how come the same SQL executes fine without PARALLEL hint, as the original poster indicates (if this is actualy true)? It smells more as a bug to me, if what original poster states is true.... Jurij Modic ASCII a stupid question, get a stupid ANSI 24 hours in a d
Filed under: Oracle Core — Leave a comment July 28, 2010 Parallel Query Is Oracle's way of scaling database performance. It uses the CPUs to define up how many parallel requests can be made. When the tables and indexes are defined using PARALLEL = DEFAULT, they pick up the default degree of parallelism for the instance, which should be (processors) x 2 (parallel threads per CPU). So for example, consider a table with 10 rows is partitioned into 5 parts. When we run a query for a full table scan, then the database, can use the parallel query concept can spawn up to 5 different processed to gather the required information for the query. These separate results are then passed to a parallel query coordinator which the consolidates the results and publishes the output
Usually errors associated with parallel query are something like this. ERROR ORA-01652: unable to extend temp segment by 512 in tablespace ERROR at line 1: ORA-12801: error signaled in parallel query server P005 In the database the parallel query parameter is controlled by the initialization parameter parallel_max_servers. SQL> conn sys/password@orcl as sysdba Connected. SQL> alter system set parallel_max_servers = 24 scope=memory; System altered. We can Query V$PX_PROCESS to see how many slaves are running. SQL> SELECT * FROM v$px_process; SERV STATUS PID SPID SID SERIAL# --- ------ ------- -------- ------- ------- P023 IN USE 52 11852 318 441 P012 IN USE 38 11830 327 7723 P000 IN USE 24 10078 348 2064 P004 IN USE 29 10086 357 1433 . . The errors ORA-12805 and ORA-12801 returned from a parallel query don't give the root cause of the problem, they just indicate that we have had some other problem in processing the query in parallel. These messages are usually accompanied by additional messages which indicate the real problem. These additional messages may be displayed on the screen or in the alert.log or in trace files in the USER_DUMP_DEST or BACKGROUND_DUMP_DEST location. Like this:Like Loading... Related Comm