Rolling Back the Upgrade Version

This section describes how to roll back to the source version.

Procedure

1. Log in to the node as a database user (for example, omm).

2. Run the following command to roll back the kernel code. After the rollback is complete, run the gs_preinstall script in the old package to ensure that the kernel version is the same as the OM code version. For details, see Execute the gs_preinstall script.

   gs_upgradectl -t auto-rollback  -X /opt/software/GaussDB_Kernel/clusterconfig.xml
   

   NOTE: If the database is abnormal, run the following command to forcibly roll back the upgrade:

   gs_upgradectl -t auto-rollback -X /opt/software/GaussDB_Kernel/clusterconfig.xml --force
   

3. Check the version number after the rollback.

   gs_om -V | --version