iX V6.5 (30391-90011)

672 AppendixH

TurboIMAGE/XL versus TurboIMAGE/V

Overview

retrievals, and sorted sequential searches on any database that is enabled for

third-party indexing.

• A logical transaction bracketed by DBXBEGIN and DBXEND can be dynamically rolled

back. This dynamic transaction can be of 1 to 15 databases.

• A data set can be a jumbo set exceeding 4 gigabytes.

• B-tree indices on key items of master data sets allow generic and range searches on key

items of master sets as well as corresponding detail data set search items.

• Databases can be stored, even when they are open for read/write access, using

TurboSTORE/iX 7x24 True Online Backup (with ONLINE=START or ONLINE=END

option). Their related ﬁles, such as TC ﬁle and third-party index ﬁles, are stored along

with the databases.

• DBRECOV can perform a roll-forward recovery for a database stored using

TurboSTORE/iX 7x24 True Online Backup (with ONLINE=START or ONLINE=END

option).

• Data sets, master as well as detail, can be dynamically expanded during DBPUT.

The rest of this appendix discusses the major differences in detail. They include the

following:

• Intrinsic Level Recovery

• Control Blocks

• Status Area

• Moving from MPE/iX to MPE V

TurboIMAGE/XL differences are summarized in Table H-1.

Moving to TurboIMAGE/XL

To move a database from MPE V to MPE/iX, you need to perform the following tasks:

1. Disable both ILR and roll-back recovery (use the >>DISABLE command of DBUTIL).

2. On MPE V, store the database with DBSTORE (or use the MPE V STORE command).

3. On MPE/iX, restore the database with DBRESTOR (or use the MPE/iX RESTORE

command).