IFX_BAR_USE_DEDUP environment variable

Set the IFX_BAR_USE_DEDUP environment variable to optimize the deduplication capabilities of storage managers.


1  setenv IFX_BAR_USE_DEDUP

You are not required to set the IFX_BAR_USE_DEDUP environment variable to a value. You can set it to any value or to no value.

Deduplication is a storage manager feature that reduces the size of backups by removing data that exists in older backups. To use deduplication, enable deduplication for your storage manager and set the IFX_BAR_USE_DEDUP environment variable in the database server environment and then restart the database server. When you set the IFX_BAR_USE_DEDUP environment variable, the backup format has fewer unique pages, which optimizes the deduplication process.

Deduplication is incompatible with incremental backups. Do not make incremental backups while the IFX_BAR_USE_DEDUP environment variable is set.

Important: Backups that you take while the IFX_BAR_USE_DEDUP environment variable is set must be restored while the IFX_BAR_USE_DEDUP environment variable is set.

HCL OneDB™ Primary Storage Manager does not support deduplication.

To unset the IFX_BAR_USE_DEDUP environment variable, run the following command:

unset IFX_BAR_USE_DEDUP

After you unset the IFX_BAR_USE_DEDUP environment variable, you must perform a level-0 backup.