retention for contents in recycle bin
ie, like restricting the content of recycle bin to 100MB. so, if it exceeds 100MB, then purging should happen automatically.
or like 2 days as retention and the content older than 2 days will be automatically purged.
Anyhow, I know that this can be done manually by purge command. But I want to know if there is any internal feature (parameter etc.) provided by Oracle for this purpose.