If you happen to uninstall Oracle Golden Gate 12c then you can perform below steps for clean uninstall of Oracle Golden Gate 12c.
1. Log on to the server
2. set profile to Oracle Home
3. Drop the Golden Gate schema in both source and target databases.
4. Set profile for Golden Gate
5. Invoke GGSCI and stop Extract or Replicats if any then stop the Golden Gate Manager
6. Run deinstall.sh
Deinstall.sh will clean up all the Golden Gate binaries including the directory you have created for Golden Gate.
[Sajid Server:oracle$] pwd
<Golden Gate Home>/deinstall
[Sajid Server:oracle$]./deinstall.sh
ALERT: Ensure all the processes running from the current Oracle Home are shutdown prior to running this software uninstallation script.
Proceed with removing Oracle GoldenGate home: <Golden Gate Home> (yes/no)? [no]
yes
Starting Oracle Universal Installer...
Checking swap space: must be greater than 500 MB. Actual 18725 MB Passed
Preparing to launch Oracle Universal Installer from /tmp/OraInstall2016-02-05_01-47-48PM. Please wait ...Oracle Universal Installer, Version 11.2.0.3.0 Production
Copyright (C) 1999, 2011, Oracle. All rights reserved.
Starting deinstall
Deinstall in progress (Friday, February 5, 2016 1:48:07 PM EST)
............................................................... 100% Done.
Deinstall successful
End of install phases.(Friday, February 5, 2016 1:48:35 PM EST)
End of deinstallations
Please check '/usr/oraInventory/logs/silentInstall2016.log' for more details.
At this point you are done with the uninstall.
