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ORA-0609 Errors in Database Alert Log When Running JDBC Application Jobs (Doc ID 1269137.1)

Last updated on AUGUST 04, 2018

Applies to:

JDBC - Version and later
Oracle Database - Enterprise Edition - Version and later
Oracle Net Services - Version and later
Information in this document applies to any platform.


After upgrading the database from to, the following error messages are intermittently reported in the database alert log :
opiodr aborting process unknown ospid (16127) as a result of ORA-609

The application executed consists of cron jobs using JDBC thin 10.2 for connection to the database.

Server trace file, upon attempting to communicate with the client side, sees an unexpected EOF occurring on the database side of the connection:

[000001 04-NOV-2010 17:41:03:550] nsprecv: reading from transport...
[000001 04-NOV-2010 17:41:03:550] nttrd: entry
[000001 04-NOV-2010 17:41:03:556] nttrd: exit
[000001 04-NOV-2010 17:41:03:556] ntt2err: entry
[000001 04-NOV-2010 17:41:03:556] ntt2err: Read unexpected EOF ERROR on 14

Although the database is reporting ORA-0609 messages indicating an aborted connection attempt, there is no reported error at the application side.


Upgrade of database from to


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