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Backing Up Oracle - Computing at Cornell

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The following is an explan<strong>at</strong>ion of the command and its parameters:<br />

essorcb<br />

This is the TDP for ESS backup executable for the backup machine.<br />

TSM node name of the production machine<br />

Because the nodename was not explicitly specified in the dsm.sys of<br />

production machine, it defaulted to the hostname. In our case the<br />

production machine’s node name is auckland.<br />

temporary file name<br />

The backup process restores the temporary file cre<strong>at</strong>ed the backup<br />

process in the production machine on the files specified by this parameter.<br />

We kept the temporary file name the same as the one in the production<br />

machine. In our case, this is /tmp/tokyotmp.<br />

From our observ<strong>at</strong>ion, the backup process basically performs the following:<br />

1. Makes the FlashCopy volumes and filesystems available to the oper<strong>at</strong>ing<br />

system<br />

2. Restores the temporary file th<strong>at</strong> was cre<strong>at</strong>ed by the backup process in the<br />

production machine<br />

3. Restores the backup script and configur<strong>at</strong>ion files<br />

4. Restores the controlfile<br />

5. Performs an RMAN offline backup of the d<strong>at</strong>abase to TSM<br />

6. Removes the filesystems and devices from the oper<strong>at</strong>ing system<br />

It also appears th<strong>at</strong> the admin/tokyo branch was recre<strong>at</strong>ed on<br />

ORACLE_HOME or ORACLE_BASE when restoring the backup script and<br />

configur<strong>at</strong>ion file (inittokyo.ora). It is therefore recommended th<strong>at</strong><br />

ORACLE_HOME or ORACLE_BASE exists in the backup machine before<br />

running the backup command.<br />

Here we encountered problems as mentioned in E.3.1.3, “TDP for ESS setup”<br />

on page 233. We recommend using the trace file to determine the cause of<br />

the problem. Remember to turn off tracing l<strong>at</strong>er.<br />

E.3.3 TDP for ESS testing<br />

In this section we discuss the tests we have made for backup and recovery.<br />

Appendix E. TDP for IBM ESS for <strong>Oracle</strong> d<strong>at</strong>abases 239

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