EM 12c: Database Target Cannot be Promoted in Enterprise Manager Cloud Control

(Doc ID 1611281.1)

Last updated on DECEMBER 03, 2015

Applies to:

Enterprise Manager for Oracle Database - Version to [Release 12.1]
Information in this document applies to any platform.


For Enterprise Manager Cloud Control, Target Database, Listener, ASM version

Promoting a discovered database target gives the following error:

Failed to connect to the database: IO Error: Got minus one from a read call The Connect Descriptor

It has been found that if


is set in the sqlnet.ora, the error is generated.  However, if 


is set in the sqlnet.ora, the issue is no longer reported and the login to the database succeeds.

Changing the trace_level_server parameter to 10 also works without error, but any value other than 10 or 16 reproduces the error.

Note that this issue is specific to version database targets.



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