In Oracle RAC environments, Oracle recommends that you let the Oracle Agent manage the Oracle listeners for the databases.
- Use the
lsnrctl executable located in the Grid home to administer Oracle Database 12c release 2 (12.2) local and SCAN listeners.
Do not attempt to use the lsnrctl executables from Oracle home locations for earlier releases, because they cannot be used with Oracle Database 12c release 2 (12.2).
- Use SRVCTL and the
setenv command to modify the value of TNS_ADMIN for each listener.
For listeners not managed by Oracle Clusterware, you can use a nondefault location for the listener.ora file by setting the TNS_ADMIN environment variable or registry value to point to the directory that contains the Oracle Net Services configuration files.