You're missing "startup mount"; "alter database archivelog" and "alter database open" after shutdown immediate. But if you're doing it the first time, make sure you understand the concepts of archivelogging and online backups (if you're gonna do those) first. docs.oracle.com will help (backup & recovery guide). Tanel. ----- Original Message ----- From: Onkar N Tiwary To: oracle-l@xxxxxxxxxxxxx Sent: Friday, December 23, 2005 6:26 AM Subject: changing archive from noarchive hi all, This is the first time, I am going to put one production server, which is running in Active-Passive cluster, in archivelog mode from noarchive log mode. As I said since this is the first time , I am going to do this , so I don know what are the changes required. My plan is as : 1) setting log_archive_dest,log_archive_format & log_archive_start parameters in init<sid>.ora/spfile<sid>.ora on both the nodes 2) connecting to oracle server with sys/pass@string as sysdba 3) shutting down the database using SHUTDOWN IMMEDIATE 4) starting the database normally using STARTUP Do I need to do something else??? Plz. sugges. -- Thanks & Regards, T. Onkar Nath OneAPPS Enterprise Technology Pvt. Ltd. to_onkar@xxxxxxxxx onkarnath.tiwary@xxxxxxxxx