Shared Server Issue: TNS-12602: TNS: Connection Pooling limit reached
Last updated on JUNE 21, 2017
Applies to:Oracle Net Services - Version 10.1.0.2.0 to 184.108.40.206 [Release 10.1 to 11.1]
Information in this document applies to any platform.
Clients that are configured to make a SHARED (not DEDICATED) connection to the database may
start to fail. These errors would appear in the listener.log.
TNS-12518: TNS:listener could not hand off client connection
TNS-12564: TNS:connection refused
TNS-12602: TNS: Connection Pooling limit reached
No changes necessary. This is a resource depletion problem.
Sign In with your My Oracle Support account
Don't have a My Oracle Support account? Click to get started
Million Knowledge Articles and hundreds of Community platforms