About Service Registration for an Oracle RAC Database
An Oracle AI Database service automatically registers with the listeners
specified in the database initialization parameters LOCAL_LISTENER
and REMOTE_LISTENER.
During registration, the listener registration (LREG) process sends information such as the service name, instance names, and workload information to the listeners. This feature is called service registration.
When a listener starts after the Oracle instance starts, and the listener is
available for service registration, registration does not occur until the
next time the Oracle AI Database LREG process starts its discovery routine.
By default, the LREG discovery routine is started every 60 seconds. To
override the 60-second delay, use the SQL statement ALTER SYSTEM
REGISTER. This statement forces LREG to register the
service immediately.
Note:
Oracle recommends that you create a script to run theALTER SYSTEM REGISTER statement immediately after starting the
listener. If you run this statement when the instance is registered and all services are
currently registered, or while the listener is down, then the statement has no
effect.
See Also:
Oracle AI Database Net Services Administrator's Guide for more information about service registration