SQL/MX 2.x Database and Application Migration Guide (G06.23+, H06.04+, J06.03+)

HP NonStop SQL/MX Database and Application Migration Guide—540435-005
8-1
8
Falling Back to SQL/MX Release 1.8
This section describes falling back from SQL/MX Release 2.x to SQL/MX Release 1.8.
Falling back to a release of SQL/MX earlier than SQL/MX Release 1.8 is not
supported.
Before you install SQL/MX Release 2.x, plan for a potential fallback to SQL/MX
Release 1.8. That way, if necessary, you can fall back from SQL/MX Release 2.x more
easily. For more information, see Planning for Fallback
on page 5-2.
If you encounter a serious problem with SQL/MX Release 2.x and decide you need to
fall back to SQL/MX Release 1.8, read this section carefully and understand it fully
before attempting the fallback procedure.
This section addresses these topics:
•
Preparing to Fall Back From SQL/MX Release 2.x to SQL/MX Release 1.8 on
page 8-1
•
Steps for Falling Back From SQL/MX Release 2.x to SQL/MX Release 1.8 on
page 8-3
•
Managing Module Files and Applications During Fallback From SQL/MX Release
2.x on page 8-9
Preparing to Fall Back From SQL/MX Release
2.x to SQL/MX Release 1.8
Before falling back, follow these steps and guidelines:
•
Obtaining the Previous RVU on page 8-1
•
Obtaining SQL/MX Release 1.8 on page 8-2
•
Obtaining Corequisite Independent Products on page 8-2
•
Assessing Changes to the Applications and Database in SQL/MX Release 2.x on
page 8-2
•
Planning to Fall Back Other Nodes in the Network on page 8-3
Obtaining the Previous RVU
To fall back to SQL/MX Release 1.8, you must reinstall a previous RVU that supports
SQL/MX Release 1.8 (G06.18 through G06.22) and certain versions of some
Note. If you encounter the problem when using new features that are specific to SQL/MX
Release 2.x, consider discontinuing the use of those features instead of falling back from that
database environment.