Rama, First thing how big is your Database ? HOw much down time you can afford ? Most easy effecient way, Create new Oracle 9i home and Database with the tablespaces as your current 8i database. Full Export from 8i and Full importl into 9i. Following document can help you. http://www.humanservicestechnology.com/humanservices/download/Migrating%20a%20FACTORS%20Database%20from%20Oracle%208i%20to%209i.pdf Nisar Tareen RAMA KORADA <RKORAD@xxxxxxxxxxxxxxx> wrote: DB_BLOCK_SIZE is 8K, can not reduce that. do u have simple steps for upgrade manually. like setting oracle_home to 9i and run upgradeXXX.sql Thanks krishna >>> ntareen@xxxxxxxxx 11/21/05 9:42 PM >>> First. Lets look at the explanation to ORA-000064 error dose it make sense. ORA-00064: object is too large to allocate on this O/S num, num Cause: The initialization parameter DB_BLOCK_SIZE is set to a value that calls for more contiguous space than can be allocated on the operating system being used. Action: Reduce the value of DB_BLOCK_SIZE so that the requested contiguous space is within the capacity of the operating system. Secondly. Check the alert log and it will help you in understanding the sequence of events as they occured and after the error what happen did the database shutdown or crashed etc. Fix the DB_BLOCK_SIZE and d o the investigation of the cause of error and restart the process. Finally. I hope you have a good backup cold and export of your 8.1.7 database, before you had started your upgrade project. If not still not lost much take backup FIRST. Good Luck. Nisar tareen RAMA KORADA <RKORAD@xxxxxxxxxxxxxxx> wrote: Hai. Installed 9207 and currently upgrading DB 8174 to 9207 using DBUA during upgrade iam getting ORA-1034, I got ORA-00064 i ignored it and iam getting ORA-1034, database 8174 was up before i stared database upgrade us ing DBUA. Please throw some light on this, ur help is greatly appreciated. Thanks krishna --------------------------------- Yahoo! FareChase - Search multiple travel sites in one click. --------------------------------- Yahoo! FareChase - Search multiple travel sites in one click.