RAC: ORA-12520 Errors Due to Misconfiguration of LOCAL_LISTENER at Instance
(Doc ID 885431.1)
Last updated on FEBRUARY 03, 2019
Applies to:Oracle Net Services - Version 10.2.0.4.0 to 184.108.40.206 [Release 10.2 to 12.2]
Oracle Database - Enterprise Edition - Version 220.127.116.11 to 18.104.22.168 [Release 12.2]
Information in this document applies to any platform.
This problem can occur on any platform.
After service 'RACTEST_OC' is relocated to the new node, the listener on the new server does not show any
handler for the service.
srvctl relocate service -d RACTEST1 -s RACTEST_OC -i RACTEST1 -t RACTEST2
The output of lsnrctl status on new node:
-bash-3.00$ lsnrctl status LISTENER_RACTEST0B
Service "RACTEST_OC.us.oracle.com" has 1 instance(s).
Instance "RACTEST2", status READY, has 0 handler(s) for this service...
Testing the connection fails with the ORA-12520 error:
SQL> conn system@RACTEST_)C3
Enter password: ******
ORA-12520: TNS:listener could not find available handler for requested type of server
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