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Repeating TNS-12518, TNS-12549, ... Error: 11: 'Resource Temporarily Unavailable' Errors in listener log (Doc ID 430686.1)

Last updated on JANUARY 30, 2022

Applies to:

Oracle Net Services - Version 10.2.0.2 to 11.2.0.4 [Release 10.2 to 11.2]
Information in this document applies to any platform. This problem can occur on any platform.

Symptoms

Listener log shows repeating error stack below for connection requests to an Oracle10g R2 instance:

 TNS-12518: TNS:listener could not hand off client connection
   TNS-12549: TNS:operating system resource quota exceeded
    TNS-12560: TNS:protocol adapter error
      TNS-00519: Operating system resource quota exceeded
       IBM/AIX RISC System/6000 Error: 11: Resource temporarily unavailable

Connection requests fail to connect to the Oracle instance.  This is clearly a resource depletion problem.

Cause

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In this Document
Symptoms
Cause
Solution
References


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