Hi Gurus, Am in deep trouble hope you will help. My OS is SOLARIS 64 bit My Oracle Version is : 9.2.0.1 32 bit By mistake one of the DBAs installed 64bit patch set (9.2.0.5) on the DB. Therefore linking is failing. Please let me know how can I get arround of this issue without reinstalling the Database s/w. Can I install 32 bit patch (9.2.0.5) on the present installation. What is the procedure to check whether the DB s/w is 64/32 bit when the DB is down? Please help. Regards, Deepak Oracle DBA