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Thread: server error ORA-03113

  1. #1

    server error ORA-03113

    ORA-03113: end-of-file on communication channel
    Process ID: 11300
    Session ID: 96 Serial number: 3

    unable to do any work on the server, please find the solution for above problem

  2. #2
    Oracle DBA
    Join Date
    Mar 2013
    ORA-03113: end-of-file on communication channel
    How do I fix this ORA-03113 error?
    Answer: Use the oerr utility to get the details for the ORA-03113 error:
    ORA-03113: end-of-file on communication channel
    Cause: The connection between Client and Server process was broken.
    Action: There was a communication error that requires further investigation.
    • First, check for network problems and review the SQL*Net setup.
    • Also, look in the alert.log file for any errors.
    • Finally, test to see whether the server process is dead and whether a trace file was generated at failure time.

    The ORA-03113: end-of-file on communication channel error is a generic error. The ORA-03113 error when connecting suggests that the connection was established, but lost later, like a timeout.
    Note: Windows users report ORA-03113 errors from non-Oracle issues like Windows logs becoming full.
    There are many possible causes for the ORA-03113 error. It is a "catch-all" type error which means "I cannot communication with the Oracle shadow process." This usually happens when the Oracle server process has died for some reason.
    See MOSC Note:17613.1 "ORA-03113":
    For example, ORA-03113 could be signaled for any of these scenarios:
    • Server machine crashed
    • Your server process was killed at O/S level
    • Network problems
    • Oracle internal errors / aborts on the server
    • Client incorrectly handling multiple connections
    • etc.. etc.. etc.. - a lot of possible causes !!
    It goes on to note that the ORA-03113 End-Of-File error often has additional messages:
    It is common for this error to be accompanied by other errors such as:
    • ORA-01041 internal error. hostdef extension doesn't exist
    Oracle support will likely need more information to determine what caused the error.
    The most useful items are:
    1. Does this occur when trying to (a) make a connection to the database or
      (b) on an established connection ?
    2. Check for a trace file from the failed session in USER_DUMP_DEST and BACKGROUND_DUMP_DEST directories.
    3. Does a particular statement reproduce this problem or is it random ? Use SQL_TRACE on the session to find the problem statement.
    Oracle MOSC documents also reveal that, "ORA-03113 is received when running catpatch after applying the or patchset".
    Mohammad Shahnawaz
    Kuwait []

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