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Socket Read Timeout error

758670Mar 8 2010 — edited Apr 20 2012
Hello all -
I am getting this stack trace while connecting via JDBC to an ORACLE 11G R2 instance:
Caused by: oracle.net.ns.NetException: Socket read timed out
	at oracle.net.ns.Packet.receive(Packet.java:249)
	at oracle.net.ns.NSProtocol.connect(NSProtocol.java:259)
	at oracle.jdbc.driver.T4CConnection.connect(T4CConnection.java:966)
	at oracle.jdbc.driver.T4CConnection.logon(T4CConnection.java:292)
	... 21 more
It doesn't happen all the time -- it seems to happen at random.

In the listener alert file, I see many errors like this:
Fatal NI connect error 12537, connecting to:
 (LOCAL=NO)

VERSION INFORMATION:
TNS for Linux: Version 11.2.0.1.0 - Production
Oracle Bequeath NT Protocol Adapter for Linux: Version 11.2.0.1.0 - Production
TCP/IP NT Protocol Adapter for Linux: Version 11.2.0.1.0 - Production
  Time: 08-MAR-2010 13:29:19
  Tracing not turned on.
  Tns error struct:
    ns main err code: 12537

TNS-12537: TNS:connection closed
    ns secondary err code: 12560
    nt main err code: 0
    nt secondary err code: 0
    nt OS err code: 0
opiodr aborting process unknown ospid (29865) as a result of ORA-609
2010-03-08 13:29:24.424000 -06:00
I have looked through documentation and I have run out of ideas. Does anybody know what could cause this, or at least what I should look into?
Thanks, Kevin

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Locked on May 18 2012
Added on Mar 8 2010
#general-database-discussions
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