ORA-12537 when connecting to 11.1 Database through 11.2 Listener (Solaris) (Doc ID 975596.1)

Last updated on DECEMBER 09, 2009

Applies to:

Oracle Net Services - Version: 11.2.0.1 - Release: 11.2
Information in this document applies to any platform.

Symptoms

When running an 11.2.0.1 Listener and having this service an 11.1.0.x Database on Solaris (64bit) , connections might fail with ORA-12537 (ORA-12547 reported in the listener trace). However, connections to an 11.2 (same version) database work fine through the same 11.2 listener.

Changes

Possible upgrade from 11.1 to 11.2 while still maintaining the 11.1 Database to complete migration

Cause

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