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Veritas NetBackup™ Deduplication Guide

Last Published: 2020-09-14

Product(s): NetBackup (8.3.0.1)

Oracle stream handler

The Oracle stream handler is enabled by default for newly created Oracle policies after an upgrade to NetBackup 8.3. By default, the Oracle stream handler only supports stream-based backups. You can enable and disable the Oracle stream handler per policy or all policies at once using the cacontrol command line utility.

When the Oracle stream handler is used, the FILESPERSET variable is more flexible. You can set FILESPERSET > 1 in the policy or the bp.conf without a large decrease in deduplication rates.

The Marker Entry file is used to override the default behavior by using the cacontrol command utility with the --sth flag at a client and or policy level only.

Note:

When you use the Oracle stream handler, it is not recommended to use variable-length deduplication.

Update a Marker Entry policy by using the following cacontrol options:

You can create and or update a Marker Entry policy.

cacontrol --sth update 
<STHTYPE> <CLIENT> <POLICY> [SPAUSER] <enabled | disabled>

You can query the setting for the stream handler per policy.
```
cacontrol --sth get <STHTYPE> <CLIENT> <POLICY> [SPAUSER]
```

You can delete the settings to use the default behavior.

cacontrol --sth delete <STHTYPE> <CLIENT> <POLICY> [SPAUSER]