Cluster patching or upgrading is automatic because GaussDB(DWS) upgrades its own version.
For service patch:
- Duration: less than 10 minutes
- Impact on services: 1 to 3 minutes of interruptions
For service upgrade:
- Duration: less than 30 minutes
- Impact on services: The database cannot be accessed.
Downgrade is not supported.
The following figure describes the database version.
- During service patch, the last digit of database version X.X.X is changed, for example, the database is upgraded from 1.1.0 to 1.1.1.
- During service upgrade, the first two digits of database version X.X.X are changed, for example, the database is upgraded from 1.1.0 to 1.2.0.