Database Version Control
- Last UpdatedMay 17, 2023
- 1 minute read
The upgrade version number is used to verify that the versions of the database and the software that accesses them are compatible. During application start-up, databases are checked against the software; access may be restricted according to the following table:
|
Database Upgrade Version |
|||
|
Pre 12.1 |
12.1.1 |
Future (for example, 12.2) |
|
|
Software Version |
Max Open Mode |
||
|
Pre 12.1 |
R/W |
X |
X |
|
12.1.1 |
R |
R/W |
X |
|
Future (for example, 12.2) |
R |
R |
R/W |
This control ensures that AVEVA software that opens a database is compatible with the contents of that database and thereby prevents accidental data corruption. It also ensures that data intended for use with one software version is not modified by a newer, incompatible software version.
X indicates ‘no access’; however, versions earlier than 12.1 do not make this check, so cannot detect a database upgraded to 12.1 or later.