A couple of folks have asked about the ORACLE_HOME environment variable. When working on Win32 boxes with multiple instances of Oracle I always set ORACLE_HOME to the correct location for the database in use. The PATH is set to include only the %ORACLE_HOME%\bin for the database currently in use. These values are also set in the registry for my session. ( HKLM\SYSTEM\CurrentControlSet\Control\Session Manager\Environment ) The ORACLE_HOME always required when using opatch. The opatch.cmd script pulls it from the environment and passes it to opatch.pl. The patch instructions include setting ORACLE_HOME in the current CMD window. -- Jared Still Certifiable Oracle DBA and Part Time Perl Evangelist -- //www.freelists.org/webpage/oracle-l