Hi, I am doing a manual upgrade from 10.2.04 to 11.2.03. I have installed 11.2.0.3. Ran utlu112i.sql Copied TNSNAMES and LISTENER.ora,init.ora from 10g home to 11g home respective directories. Commented all dump_dest paramteres in 11g init.ora and added diagnostic_dest parameter exported all the varaiables as follows. export ORACLE_HOME=/oracle/ora11203 export PATH=$ORACLE_HOME/bin:$PATH export ORACLE_SID=OMIGTEST export TNS_ADMIN=$ORACLE_HOME/network/admin export ORACLE_BASE=/oracle/ora11203/app/ora11203 export LD_LIBRARY_PATH=/oracle/ora11203/lib:/usr/local/lib Now when i try to start DB from the unix session where all of above variables are set,i am getting following issue. sqlplus '/as sysdba' SQL*Plus: Release 11.2.0.3.0 Production on Thu Aug 23 16:22:16 2012 Copyright (c) 1982, 2011, Oracle. All rights reserved. Connected to: Oracle Database 11g Enterprise Edition Release 11.2.0.3.0 - 64bit Production With the Partitioning, OLAP, Data Mining and Real Application Testing options SQL> startup upgrade ORACLE instance started. Total System Global Area 1636892672 bytes Fixed Size 2183056 bytes Variable Size 1090519152 bytes Database Buffers 536870912 bytes Redo Buffers 7319552 bytes ORA-00205: error in identifying control file, check alert log for more info The following entry is present in init.ora.If I keep this entry or comment it out,Iam getting same issue. control_files = (/oracle/ora11203/dbs/ctrl_1_OMIGTEST.ctl) Do i copy control file from 10g home and place in in 11g path and mention it in init.ora before upgrade? Thanks and Regards, Nisha Mohan.A **************** CAUTION - Disclaimer ***************** This e-mail contains PRIVILEGED AND CONFIDENTIAL INFORMATION intended solely for the use of the addressee(s). If you are not the intended recipient, please notify the sender by e-mail and delete the original message. Further, you are not to copy, disclose, or distribute this e-mail or its contents to any other person and any such actions are unlawful. This e-mail may contain viruses. Infosys has taken every reasonable precaution to minimize this risk, but is not liable for any damage you may sustain as a result of any virus in this e-mail. You should carry out your own virus checks before opening the e-mail or attachment. Infosys reserves the right to monitor and review the content of all messages sent to or from this e-mail address. Messages sent to or from this e-mail address may be stored on the Infosys e-mail system. ***INFOSYS******** End of Disclaimer ********INFOSYS*** -- //www.freelists.org/webpage/oracle-l