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ORA-03110

Posted on 2009-05-11
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Last Modified: 2013-12-19
I am getting ORA-03110: end-of-file on communication channel error & getting disconneted from the DB while querying some time.

Since 2-3 days am getting this problem.

Oracle Server : 10.2.0.3
Client : 9.2.0.8

Sachin

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Question by:sachin_dba
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by:rgn2121
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Not sure if this will help, but this is what I found.
ORA-03110 ORA-03110: oranet: ORACLE does not support this SQL version Cause: The version of Oracle connected to via Net8 does not support the version of the Net8 protocol. Action: Upgrade the older version of Oracle and try again.
 
http://ora-03110.ora-code.com/
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by:Andytw
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If you get an ORA-07445 or an ORA-0600 (internal error), the server process dies, and often a ORA-0311 is returned back to the session.  This can often be the sign of an Oracle bug.  
Do you have access to the DB alert log?  If so, check the alert log, and any any corresponding dump files.  The core dump often points you do the bit of SQL that was running at the time.  Armed with this you  should be in a position to determine if it's a documented bug.

For example:
[<ORACLE_HOME>\admin\SID\bdump\alert_test.log]
Errors in file e:\oracle\admin\test\udump\test_ora_3100.trc:
ORA-07445: exception encountered: core dump [ACCESS_VIOLATION] [ptmak+420] [PC:0x620E984] [ADDR:0x10] [UNABLE_TO_READ] []

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by:sachin_dba
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No internal error on alert logs.
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by:mrjoltcola
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Not that this helps you diagnose the problem, but unless you have a good reason for 9i client, upgrade to 10g at least. 9i is no longer supported by Oracle, since 2007. Do you have a client side tool that cannot make use of 10g client?
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schwertner earned 500 total points
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Look for timeout in the firewall, some restriction in the profile.
Speak with the admins. Do they make some network changes - DNS, gateway settings, etc.
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by:tangchunfeng
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The first investigation you should do is to test connect to the db server with an Oracle 10.2 client and do the same query to verify wheather it's caused by the version difference of oracle client
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by:sachin_dba
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Problem resolved
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