Oracle tdp slow performance

[panou]

Hi all,

All of my servers' backup are really slow (~ 3MB/s)
Here is my configuration :

Using RMAN I first backup my database to disk, and the backup the backupset to TSM (it's then a simple copy of data).

run {
backup AS COMPRESSED BACKUPSET check logical incremental level 0 database;
BACKUP DEVICE TYPE SBT BACKUPSET ALL NOT BACKED UP 1 TIMES;
}

My TSM server (v5.5) has 2 x 1 GB/s ethernet link. Ethernet usage on this server barely go upper than 10%.

My client (version 5.5 and 6.3 - Linux & Windows) configuration is as follow :


dsm.sys

SErvername  myservername
COMMMethod         TCPip
TCPPort            1500
TCPServeraddress   myserveraddress
TCPWindowsize           63
TCPNodelay              Yes
Largecommbuffers                Yes
PASSWORDAccess          prompt
errorlogname            /opt/tivoli/tsm_error_log/tsmerrori_MT.log
ERRORLOGRetention       7

tdpo.conf

DSMI_ORC_CONFIG    /opt/tivoli/tsm/client/oracle/bin64/dsm.opt
DSMI_LOG           /tmp/tsm_error_log
TDPO_FS            FS_NAME
TDPO_NODE          NODE_NAME
TDPO_PSWDPATH      /opt/tivoli/tsm/client/oracle/bin64

All clients node are either physical server or virtual server connected with a 1GB/s ethernet card.

How can I find where is the bottleneck ? A simple file copy to the TSM server report a transfert speed around 80-90MB/s
My backup strategy is a simple copy of backup already done (backup backupset).
I'm also not using parrallel backup because I only use Oracle Standard Edition.

Thank you for your help

Regards

 

[stratanic]

https://adsm.org/forum/index.php?threads/a-big-discovery-for-restore-performance-issues.30185/
look this post
TCPWindowsize 0