Linked server querying error

  • rayan98

    Mr or Mrs. 500

    Points: 577

    Hi guys, recently i need to start to look after some of the linked server query . i got a instance of SQL 2005 and linked over to oracle server. i can run the pl-sql on the server without a problem (the query returns 200000 rows) on sql plus* in my local machines (the result come back within 25 sec) , when i ran the same query through linked server, it has no responses for about 25 minutes and sometimes it came back the error messages .

    here are the followings :

    OLE DB provider "OraOLEDB.Oracle" for linked server "REB_REPSER" "ORA-03113: end-of-file on communication channel

    OLE DB provider "OraOLEDB.Oracle" for linked server "REB_REPSER" returned message "ORA-12592: TNS:bad packet".

    but if i run a query which return less than 3000 rows, it brings the result back without a problem .

    i have look into different options on linked server setting (and i tried to modify the timeout) without any luck.

    anyone came across this error before ? and how do you solve it ? or where should i start ?

    please let me know if you require any more information ?

    i really appreciated with all your help

    many thanks

  • DNA_DBA

    SSCertifiable

    Points: 7825

    Can you show us the query you are running - is it using openquery?

  • PaulB-TheOneAndOnly

    SSC Guru

    Points: 66773

    rayan98 (1/17/2013)


    ORA-03113: end-of-file on communication channel

    Oracle error ORA-03113 means that either the query has timed out or a network glitch has happened - since query is taking 25 minutes (or that is what I understood) I think it is timing out.

    You can manage timeout on sqlnet.ora file - if my memory serves me well it would be SQLNET.EXPIRE_TIME setting the one you are looking for.

    _____________________________________
    Pablo (Paul) Berzukov

    Author of Understanding Database Administration available at Amazon and other bookstores.

    Disclaimer: Advice is provided to the best of my knowledge but no implicit or explicit warranties are provided. Since the advisor explicitly encourages testing any and all suggestions on a test non-production environment advisor should not held liable or responsible for any actions taken based on the given advice.
  • rayan98

    Mr or Mrs. 500

    Points: 577

    thanks guys 🙂 . will try that and let u guys know how did it goes

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