How to Convert a 32-bit Database to 64-bit Database on Linux?

(Doc ID 341880.1)

Last updated on FEBRUARY 05, 2018

Applies to:

Oracle Database - Enterprise Edition - Version to [Release 9.2 to 11.2]
Oracle Database - Standard Edition - Version to [Release 10.2]
Linux x86-64
Linux x86
***Checked for relevance on 29-Jun-2015***


Steps to change the wordsize of an Oracle9i Release 2 (9.2), Oracle10g or Oracle11g single instance database from Linux x86 to Linux x86-64

This document provides details for changing word size from 32bit to 64bit in same release .For example, if you have the 32-bit version of Oracle release and you want to switch to the 64-bit version of Oracle release, then you must complete this below procedure. This document is a "cut/paste" of applicable sections from the Oracle9i Release Notes Release 2 ( for Linux x86-64 (B13848-02), to quickly provide the needed details and steps to change the word-size.

This note is applicable to Oracle9i( and onwards * ) , Oracle10g R1, Oracle 10g R2 and Oracle 11gR1

* For Redhat Red Hat Enterprise Linux AS/ES 3 . Other please check Metalink>Certify section to know certified version. 

If you are changing wordsize for Oracle release10.1.x/10.2.x/11.1/11.2 32-Bit to 64-bit with OLAP enabled for DB

Please refer the documents:
Note 352306.1   Upgrading OLAP from 32 to 64 bits
Note 332351.1   How To Remove or To Reinstall the OLAP Option

Otherwise there could be some issues of ORA-07445 as mentioned in the later part of this document


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