1.5 Upgrade Checklist for Oracle RAC
Review the checklist for additional requirements related to upgrading an existing Oracle Real Application Clusters (Oracle RAC) installation to Oracle Database 21c.
The system must meet the following requirements:
-
Each server must use the same Windows user account as the Oracle Home User across all Oracle homes.
-
When upgrading, if the Oracle home from which you run the database upgrade uses a Windows Domain User as the Oracle Home User, then the Oracle Home User on the target version must use the same Windows Domain User.
-
When upgrading, if the Oracle home from which you run the database upgrade uses the built-in account (LocalSystem) as the Oracle Home User, then the Oracle Home User on the target version may use the built-in account, a Windows Domain User account, or a Windows Group Managed service account (GMSA).
Table 1-5 Upgrade Checklist for Oracle RAC
Item | Task |
---|---|
Review existing Oracle installations and upgrade plans |
To install Oracle RAC 21c, you must have Oracle Grid Infrastructure (Oracle Clusterware and Oracle ASM) 21c installed on your cluster. See Also: Oracle Database Upgrade Guide Oracle Grid Infrastructure Installation Guide |
Ensure that Oracle RAC Databases you are installing are compatible with existing databases |
|
Migrate files off of RAW devices |
If you have any database data stored on RAW devices, then before you start Oracle Grid Infrastructure and Oracle RAC installation, you must use RMAN to copy that data to Oracle ASM or to another supported file system. |
Prepare to upgrade all existing nodes |
The Oracle RAC database instance is running on the same nodes that you intend to make members of the new cluster installation. For example, if you have an existing Oracle RAC database running on a three-node cluster, then you must select all three nodes when upgrading the database using Oracle Universal Installer. You cannot upgrade only two nodes of the cluster, removing the third instance in the upgrade. |
Ensure that Oracle RAC database version is equal to or earlier than the version of Oracle Clusterware |
Before you upgrade Oracle RAC database, ensure that Oracle Grid Infrastructure is upgraded to an equal or a later release. You can have multiple Oracle homes for Oracle databases on your cluster. However, the Oracle RAC database software in these homes must be from a version that is equal to or before the version of Oracle Clusterware that is installed. For example:
|
Related Topics
Parent topic: Oracle RAC Installation Checklist