Post hangs and won't stop cleanly,
Database sessions won't go away, session takes for ever to complete the rollback in the database.
Eventually ends up as a hung session.
Restarting Shareplex will still result in a hung situation as the database sessions were not cleared.
Due to the Oracle bug
Database bounce will get rid of the hung Oracle sessions.
Please contact Oracle support and refer the below Oracle patch
Platform Patch for : Solaris Operating System (SPARC 64-bit)
Product Version # : 184.108.40.206
Patch Number : 6279479
Patch Description :INDEX ROLLBACK TAKING TOO LONG TO COMPLETE/HANGING