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TNS Listener Hang Every 49.X Days (Doc ID 1357676.1)

Last updated on MARCH 31, 2019

Applies to:

Oracle Net Services - Version to [Release 10.2 to 11.2]
Information in this document applies to any platform.


TNS listener hangs every 49.7 days. Parameter RATE_LIMIT is set in the listener.ora file.
Level 16 listener trace for the hang shows the following functions:

[000001 17-MAY-2011 23:30:42:953] nstoSetupTimeout: entry
[000001 17-MAY-2011 23:30:42:953] nstoSetupTimeout: MTO enabled for ctx=0x1002bcaf0, val=-47967511(millisecs)
[000001 17-MAY-2011 23:30:42:953] nstoUpdateActive: entry
[000001 17-MAY-2011 23:30:42:953] nstoUpdateActive: Active timeout is 5 (see nstotyp)
[000001 17-MAY-2011 23:30:42:953] nstoControlMTO: MTO enabled for ctx=0x1002bcaf0, val=-47967511(millisecs)
[000001 17-MAY-2011 23:30:42:953] nstoControlMTO: exit (0)
[000001 17-MAY-2011 23:30:42:954] nsglhc: At Connection Rate Limit. Muted Request.
[000001 17-MAY-2011 23:30:42:954] nsglhe: exit
[000001 17-MAY-2011 23:30:42:954] nsevwait: entry
[000001 17-MAY-2011 23:30:42:954] nsevwait: 4 registered connection(s)
[000001 17-MAY-2011 23:30:42:954] nsevwait: 0 pre-posted event(s)
[000001 17-MAY-2011 23:30:42:954] nsevwait: waiting for transport event (1 thru 5)...

When the listener is hung, client reports error code ORA-12537


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