Hi I had single instance Oracle 8i Database earlier and now new environment is created with Oracle 10g RAC. There are several perl program been used to perform some application and I appreciate if somebody can guide as how to make changes in string Existing String is like unless ($san_db = DBI->connect("dbi:Oracle:host=192.168.111.111;sid=sandb", "scott", "tiger", {LongReadLen => 8000, AutoCommit => 0})) { ... I have two RAC node sandb1 and sandb2 Thanks Sanjay --------------------------------- The fish are biting. Get more visitors on your site using Yahoo! Search Marketing.