JDBC Connection Pool -- Shows Connections Waiting Even Though Max Connections Is Not Reached

(Doc ID 2285545.1)

Last updated on NOVEMBER 03, 2017

Applies to:

Oracle WebLogic Server - Version 12.1.1.0 and later
Information in this document applies to any platform.

Symptoms

On : 12.1.1.0 version, WLS-Config (non-component)

JDBC Connection Pool -- Shows connections waiting even though Max Connections is not reached

On the main Datasource having max connections and connections waiting. Raising the Max Connections from 20 to 25 avoids hitting the max connections but still seeing a few places where there are "waiting for connection" values greater than zero.

What is the condition causing this? How can there be transactions waiting for a connection when there are still free / unused connections?


Condition Seen:
-------------------------------
Waiting for Connections > 0

Changes

 

Cause

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