Installation and Upgrade Guide

Preparing to Fall Back

G06.24 Software Installation and Upgrade Guide—528593-005

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SQL/MX 2.0

Metadata tables created and used by SQL/MX Release 2.0 running on or after G06.23

are different than those metadata tables used on prior SQL/MX releases, and the

tables are very different than those used by SQL/MP. You must be on at least Release

1.8 to migrate or to fall back. Migration and fallback considerations do apply. See TMF

(G06.23 and G06.24) on page 1-38 and DP2.

Before attempting to fall back, you should remove all SQL/MX objects and their

resource forks by using the SQL/MX GOAWAY utility. (GOAWAY is an OSS command

line utility run from mxtool.) After you fall back, the SQL/MX GOAWAY utility is not

available, and SQL/MX objects are much more difficult to remove. See NonStop

SQL/MX Release 2.0 (G06.23 and G06.24) on page 1-28.

TMF

Falling back to other RVUs, prior to G06.24, with format 2 audit trails, will cause

serious audit trail problems and requires a DELETE TMF, as well as other steps.

Fallback steps depend on whether you chose to alter the audit trail file size or format,

or both. If you do not alter the audit trail filesize or format, there are no fallback issues

with TMF for G06.24. If the audit trail file size is altered, but still within the 2,047

megabyte limit, fallback is still not a major issue, but you must take steps, before or

after fallback, to prevent deterioration in some algorithms. See TMF (G06.23 and

G06.24) on page 1-38 and DP2.

WAN Manager (T8365)

The version of WAN Manager (WANMGR) delivered in G06.07 and later RVUs

includes an SPR (first introduced by T8365AAJ) that removes the limitation of

configuring a maximum of 100 SWAN adapters. Starting with the G06.07 RVU, the

number of adapters that you can configure is determined by the amount of memory

available to the WAN manager.

If you have installed more than 100 SWAN adapters and have to fall back to a

pre-G06.07 RVU, after falling back, you must reinstall T8365AAN and its requisite

SPRs to continue using all the configured SWAN adapters. If you do not, the older

version of the WAN manager will not recognize the additional adapters or associated

entities. (EMS messages indicate storage has been exhausted.)

See the T8365AAN or later softdoc for more information.