Hi Gopinath Manickam,
you don't need to reinstall APM (it actually wouldn't help you here, as almost all information on the servers is kept in various database tables),
you need to follow the steps described in the "APM Installation Guide" for APM 9.30, Appendix E: Disaster Recovery for APM -> Cleanup Procedure
While the chapter is designed to apply all the necessary changes to to enable a backup BSM to use a clone of the original databases,
it also does the trick for your issue.
After performing the changes to the database tables, you need to run the Configuration Wizard (first on the DPS, then on the GW),
following by a start of BSM (DPS first, then GW)
Greetings
Siggi