10.4 Using Earlier Oracle Database Releases with Grid Infrastructure

Review the guidelines and restrictions for using earlier Oracle Database releases with Oracle Grid Infrastructure 21c installations.

• General Restrictions for Using Earlier Oracle Database Releases
  Restrictions for using earlier Oracle Database releases with Oracle Grid Infrastructure 21c.
• Using the Correct LSNRCTL Commands
  Do not attempt to use the lsnrctl programs from Oracle home locations for earlier releases because they cannot be used with the new release.