Slow Backup after Upgrade to Oracle11g + BRTools 7.20 (rman_RATE)

[Former Member]

Hello,

a few days ago we had this configuration:

OS: HP-UX 11.31

Oracle 10.2.0.4 database

with brtools 7.10 Patchlevel 30

We are using Symantec Netbackup for Backup.

In the util-file we are setting this extra rman-parameters for backup:

rman_channels = 24

rman_filesperset = 4

rman_RATE = 5K

(i know, that rman_rate shouldnt be alright, but it works for us to slow a little bit the speed)

The backup was working fine with about 100mb/s.

After upgrading to Oracle 11g + brtool 7.20 Patchlevel 10, the backupporcess takes a veeeeeeeery long time.

We saw in the netbackup-gui that speed ist about 5kb/s ...

I think that the rman_RATE parameter is now (with 7.20) working correct.

Does anyone have similiar troubles after upgrading to newer brtools (and/or Oracle11g) ?

I doesnt find any bugfix/release-notes, that the "function" of rman_RATE was changed?

When we changed the rman_RATE to 100m the backup is working fine.

Best Regards

Edited by: Patrick Baldinger on Mar 16, 2011 3:09 PM

[markus_doehr2]

> rman_RATE = 5K

> (i know, that rman_rate shouldnt be alright, but it works for us to slow a little bit the speed)

>

> The backup was working fine with about 100mb/s.

>

> After upgrading to Oracle 11g + brtool 7.20 Patchlevel 10, the backupporcess takes a veeeeeeeery long time.

> We saw in the netbackup-gui that speed ist about 5kb/s ...

> I think that the rman_RATE parameter is now (with 7.20) working correct.

So apparently Oracle has "fixed" RMAN to use 5 kb/sec as you have configured.

> Does anyone have similiar troubles after upgrading to newer brtools (and/or Oracle11g) ?

I don't see any "trouble"

> I doesnt find any bugfix/release-notes, that the "function" of rman_RATE was changed?

> When we changed the rman_RATE to 100m the backup is working fine.

So why not set it to 100m and be happy?

Markus

[Former Member]

My question is/was if there is any "public" note, that rman_RATE was fixed. (or rman_RATE doesn't worked fine with brtools 7.10)

It tooks a long time, to find this issue

Maybe my thread helps other people who have a similar "problem".

[Former Member]

Hi,

I hope this note may help

Note 1235952

RMAN parameter values in megabytes (MB)

-

---

(implemented in BR*Tools 7.10 patch 20, not in 7.00)

The values for the following init<DBSID>.sap can now be specified in MB:

rman_maxsetsize = n[K|M] # in KB (default) or in MB

rman_maxpiecesize = n[K|M] # in KB (default) or in MB

rman_rate = n[K|M] # in KB (default) or in MB

Previously, you could only specifiy these in KB.

Regards

Vinod