My Oracle Support Banner

ORA-16664 Running Dataguard Verify Configuration Either From 12c EM Cloud Control or DGMGRL (Doc ID 2072852.1)

Last updated on AUGUST 04, 2018

Applies to:

Oracle Database - Enterprise Edition - Version and later
Information in this document applies to any platform.


The environment is Primary Cluster Database and Single Instance Standby Database.

As example:

dbaa - Primary  Cluster database
dba   - Physical Standby Single Instance database

In EM 12c Cloud Control when navigating to the Data Guard Verification -> Verify Configuration page, it returns the following error:

Checking Data Guard status
 dbaa_dba1 : Normal
 dba : ORA-16664: unable to receive the result from a database

The DG logs from the STANDBY continuously reports an 12521 while connecting to the cluster database

Failed to connect to remote database dbaa. Error is ORA-12521
Failed to send message to site dbaa. Error code is ORA-12521






To view full details, sign in with your My Oracle Support account.

Don't have a My Oracle Support account? Click to get started!

In this Document

My Oracle Support provides customers with access to over a million knowledge articles and a vibrant support community of peers and Oracle experts.