Databases Reference
In-Depth Information
The above command produces the following output:
connected to target database: PROPRD (DBID=1716317401)
using target database control file instead of recovery catalog
allocated channel: c1
channel c1: SID=2316 instance=PROPRD1 device type=DISK
allocated channel: c2
channel c2: SID=2832 instance=PROPRD1 device type=DISK
allocated channel: c3
channel c3: SID=2316 instance=PROPRD6 device type=DISK
allocated channel: c4
channel c4: SID=2832 instance=PROPRD6 device type=DISK
allocated channel: c5
channel c5: SID=2574 instance=PROPRD2 device type=DISK
allocated channel: c6
channel c6: SID=2832 instance=PROPRD4 device type=DISK
... output truncated ...
18.
Note the channel definitions. The channels are all connected to different instances. That's
exactly what we wanted. Now the backups will be spread across all the Compute nodes.
Option B: Backing Up to a Specialty ASM Disk Group
This solution assumes that you don't want to use a fast recovery area for some reason, ostensibly because it's not
allowed at your site, or you choose not to use it. The steps are identical to the previous option, except on two groups
of steps.
Steps 1 through 9 need to change. Instead of a diskgroup called RECO, you have identified a different diskgroup
for backup. Replace the name RECO with this new diskgroup. Assume that diskgroup is named ORABACK. Since you
will not be using FRA, do not execute step 9.
Step 17 will need to change. Since you don't use FRA you have to mention the ASM diskgroup explicitly:
RMAN> run {
2> allocate channel c1 type disk format '+ORABACK/%u.rmb';
3> allocate channel c2 type disk format '+ORABACK/%u.rmb';
4> allocate channel c3 type disk format '+ORABACK/%u.rmb';
5> allocate channel c4 type disk format '+ORABACK/%u.rmb';
6> allocate channel c5 type disk format '+ORABACK/%u.rmb';
7> allocate channel c6 type disk format '+ORABACK/%u.rmb';
8> allocate channel c7 type disk format '+ORABACK/%u.rmb';
9> allocate channel c8 type disk format '+ORABACK/%u.rmb';
10> backup database;
11> }
Now the backups will be created in the diskgroup +ORABACK.
