DB Clients Cannot Connect to the SMF DB After a Cluster Failover to the Other Node Resulting in a "ORA-12505" Error
(Doc ID 1297933.1)
Last updated on MAY 18, 2021
Oracle Communications Network Charging and Control - Version 3.1.0 and later Information in this document applies to any platform.
If one node of a Solaris Clustered Service Management System (SMS) goes offline, some of the configured Resource Groups will failover to the other clustered SMS node(s), resulting in database (DB) clients' not being able to connect to the Database anymore. A client is any process that connects to the database either locally or remotely.
The client process will produce an Oracle database error message when this occurs, similar to the following example:
A net service name alias of connect descriptor can be defined using the Oracle tnsnames.ora and listerner.ora files (found in $ORACLE_HOME/network/admin) of the database server. An example of a SMS tnsnames.ora file is attached to this document as a reference.
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