The document describes the steps to upgrade an Oracle database from version 11.2.0.1 to 11.2.0.3 using an out-of-place upgrade method. It involves running pre-upgrade checks, downloading required patches, installing the new Oracle software, migrating the database to the new home, and validating the upgraded version.

1. Upgrading Oracle DB 11.2.0.1 to 11.2.0.3
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2. There are various ways to upgrade to Oracle 11.2.0.3 and I will be performing an out-ofplace upgrade (best practice) using the Database Configuration Assistant (DBUA).
Select values from v$version (Pre-install) -
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3. One of the first steps before upgrading is to check any issues that you may encounter
during the upgrade process. There is an Pre-Upgrade Information Tool that can be
downloaded from the Oracle Support site. This is basically a pre-upgrade script that can be
executed on the database and it gathers information about the database configuration and
settings that might need to be modified/updated before the actual upgrade. There are
various scripts depending upon from which version you are upgrading to Oracle 11.2.0.3, I
will be using the utlu112i_5.sql.
Log in to the system as the owner of the Oracle Home and connect to the database as
SYSDBA and execute the above script and spool it to a file
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9. Resolving errors and warnings
1.Emptying recycle bin
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10. Gathering dictionary statistics
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11. Download the Oracle Database Patch set (1040530) from the Oracle Support site.
Go to the new installation downloads and run installation
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23. When finished, set the environment variable for new home $export ORACLE_HOME=/oracle/app/oracle/product/11.2.0/dbhome_2
$export PATH=$ORACLE_HOME/bin:$PATH
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51. Copy the init/spfile and password files from the 11.2.0.1 to 11.2.0.3.
Copy the listener.ora, sqlnet.ora and tnsnames.ora files from 11.2.0.1 to 11.2.0.3.
Start the services and
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52. Check the latest version with select * from v$version;
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