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ORA-00609:  could not attach to incoming connection tips

Oracle Tips by Burleson Consulting

January 1, 2011

Question:  I see this message in my error stack indicating an ORA-609 error:

TNS-12560: TNS:protocol adapter error
ns secondary err code: 0
nt main err code: 0
nt secondary err code: 0
nt OS err code: 0
ORA-609 : opiodr aborting process unknown ospid (1476_6304)

What is the solution for the ORA-609 error?

Answer: In this case, the ORA-609 is a "secondary" error, a result of the preceding TNS-12560 error.  To diagnose any error, you start by using the oerr utility to display the ORA-00609 error:

ORA-00609:  could not attach to incoming connection

Cause:  Oracle process could not answer incoming connection

Action:  If the situation described in the next error on the stack can be corrected, do so; otherwise contact Oracle Support.

The solution is to first check for any trace files, then open an SR on Oracle MOSC.

 
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