Connection to Auxiliary using connect string failed with ORA-12528 (Doc ID 419440.1)

Last updated on OCTOBER 26, 2016

Applies to:

Oracle Database - Enterprise Edition - Version 10.1.0.2 and later
Oracle Net Services - Version 10.1.0.2 and later
Information in this document applies to any platform.
***Checked for relevance on 21-May-2015***
***Checked for relevance on 26-Oct-2016***

Symptoms

Duplicate database fails while trying to connect to auxiliary instance.

Connection from target database server to the auxiliary database  fails with error:

ORA-12528: TNS:listener: all appropriate instances are blocking new connections.

 

 

Cause

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