November 2001
Intermediate to advanced
158 pages
5h 10m
English
Content preview from IBM ESS and IBM DB2 UDB Working Together
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Chapter 7. Database backup and recovery 105
Note that steps 5 and 7 (above) are optional, there is no need to FlashCopy the PPRC mirror.
This configuration can be used as a basis for a home grown high availability (HA) solution,
where the application would have to have knowledge of both systems and decide when to
switch over. By using PPRC to mirror the log directory and containers, the remote site will
always be up to date; however, there will be a performance penalty incurred on the primary
system as each write must be acknowledged on both ESSs before it will return to the caller.
7.4.6 DB2 backups
Using any of the previous methods, a DB2 backup can be taken on the FlashCopied version
of the database. As of DB2 V7.2 FixPak 4 there is a limitation ...
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