We're here to help!

Dbvnet Transfer Speed Considerations

Follow

Issue

I can send files via FTP from our primary to the DR server, and get an average speed of about 290kb/s. However, I have noticed that with the Dbvnet process we cannot get any faster than 41kb/s. Below is an excerpt of the output from the archivelog transfer from last week:

Transferring 'ORA03_ARCHIVELOG_1_182103.ARC.gz' to server ORACLE01:7890
Progress: 0%...20%...40%...60%...80%...100% [41 KB/s] - done.
Transferring 'ORA03_ARCHIVELOG_1_182104.ARC.gz' to server ORACLE01:7890
Progress: 0%...20%...40%...60%...80%...100% [41 KB/s] - done.
Transferring 'ORA03_ARCHIVELOG_1_182105.ARC.gz' to server ORACLE01:7890
Progress: 0%...20%...40%...60%...80%...100% [41 KB/s] - done.

Suggestions

It is interesting (suspicious) that the speed always shows as 41KB/s, as in normal operation we would expect to see some variance. In view of this, please confirm that there is no network throttling happening on this port (7890).

Additionally you should try using another port, as perhaps there are network limits on port 7890.

What you can do is update the dbvnet configuration (dbvnet.conf) to use port 22 (as an example) and not 7890 and run another test. You will need to restart dbvnet on both primary/standby and also update the dbvnet port in the standby DDC file.

Then run the dbvnet-test (as outlined in the user guide HERE).

If the issue persists then please let support know.

Mike Donovan September 23, 2014 09:21

Have more questions? Submit a request

Comments