Downgrading Oracle Restart

Use this procedure to deconfigure and downgrade Oracle Restart, or to troubleshoot Oracle Restart if you receive an error during installation.

To downgrade Oracle Restart, you must first downgrade Oracle Database, deconfigure Oracle Restart, and then reconfigure Oracle Restart.

Also, running the perl.exe roothas.pl-deconfig -force with the command flags -deconfig -force enables you to deconfigure Oracle Restart without removing the installed binaries. By running perl.exe roothas.pl-deconfig -force, you can deconfigure Oracle Restart.

Note:

Stop any databases, services, and listeners that may be installed and running before deconfiguring and downgrading Oracle Restart.

Log in as a member of the Administrators group and go to the directory Grid_home\bin, where Grid_home is the path to the Oracle Restart home.
Downgrade the Oracle Restart resources:

srvct1 downgrade database -d db_unique_name -o oracle_home -t to_version
Go to the Grid_home\crs\install directory:

C: \app\oracle\product\12.2.0\grid\crs\install
Run perl.exe roothas.pl -deconfig -force with the -deconfig -force flags to deconfigure Oracle Restart.

roothas.pl -deconfig -force
Deinstall Oracle Restart using the deinstallation tool (deinstall).
Run perl.exe root.pl manually in the earlier release Oracle Restart home to configure Oracle Restart.

If you do not have an earlier release Oracle Restart on your system, then perform an Oracle Restart installation for the respective release to install Oracle Restart.