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DataSource Tries to Connect to Different DB Listen Port Then It Errors with connect timed out (Doc ID 2411439.1)

Last updated on MAY 20, 2024

Applies to:

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


A working server became intermittently unable to connect to its jdbc data sources.

For a Data Source configured to connect to Port {Port_Working}, it is seems that initially it tries to connect to {Port_Working} and then it retries different port ({Port_Blocked}) finally data source fails and connection is timed out.

Note that in this case port {Port_Blocked} is blocked by firewall.

Following exception is reported in server logs:



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