Database Reference
In-Depth Information
Although the database is only indirectly affected you must have a backup of every single database using the ASM
instance as well. Do not uniquely rely on the v$asm_client view for a list of databases making use of the ASM instance:
if a database is stopped it will not be listed there!
Other places to look for hints of databases using the ASM instance are your company's configuration
management database, parameter or server parameter files, the output of “srvctl config database” and database log
directories in $ORACLE_BASE. Please do not continue until you have made sure that every component that could
break has been backed up in a way that makes it possible to restore it.
Remember that all databases in an Oracle Restart environment are dependent on the ASM instance. In other
words: you cannot patch the environment without incurring downtime. There is no way other than to stop the
databases during the ASM upgrade unless you are using Real Application Clusters!
The upgrade path for Oracle Restart
As with the database, there are strict rules about which release can be upgraded. The releases eligible for direct
migration are listed in the Grid Infrastructure Installation Guide for your platform. In case of Linux, the following
versions are mentioned:
10.1.0.5
10.2.0.3
11.1.0.6
11.2
In reality you should not be concerned with any version other than 11.2 unless you are in extended support
with Oracle. Bear in mind that there are additional restrictions for almost each of these releases, such as mandatory
patches to be applied. In practice it makes a lot of sense to be on the latest available patchset and the terminal
release for your release. For Oracle 11.2, which should be the main target for the migration, the following additional
restriction has been identified: If you have applied the first patchset to 11g Release and are on 11.2.0.2.0 you must
apply at least PSU 3. It does however seem more sensible to apply the latest PSU for 11.2.0.2 instead or better be on
11.2.0.3 which was the most current 11g Release patch set at the time of writing. When this topic goes to print
11.2.0.4-the terminal release for 11g Release 2-will be out.
the requirements for upgrades might change while this topic is out. refer to the Grid Infrastructure Installation
Guide for your platform, and refer to appendix B in that guide for a complete list of current requirements.
Note
Unsetting environment variables
If you have made your life easier by setting certain environment variables such as ORACLE_HOME and others then
please ensure they are unset before starting Oracle Universal Installer. Candidates for unsetting are:
ORACLE_HOME
ORA_CRS_HOME
ORACLE_SID
LD_LIBRARY_PATH
LD_PRELOAD
ORACLE_BASE
 
 
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