Is there any downside to using multiple channels (data streams) for Oracle RMAN backups when client-side deduplication is configured? i.e. is deduplication negatively impacted vs using a single channel.
Thank you.
Answer
Oracle channels and effects on deduplication efficiency
Best answer by Damian Andre
Hi
Talking with one of our oracle experts, he says it should not affect deduplication as by default it will only assign one database file to a channel - so the data stream integrity for purposes of deduplication should be the same. If you change the section size for datafile there could be an impact, but that is not a default option.
If you have a question or comment, please create a topic
+23- Vaulter
- Answer
Hi
Talking with one of our oracle experts, he says it should not affect deduplication as by default it will only assign one database file to a channel - so the data stream integrity for purposes of deduplication should be the same. If you change the section size for datafile there could be an impact, but that is not a default option.
Enter your E-mail address. We'll send you an e-mail with instructions to reset your password.