Rman backup error in 10g rac

Question

hi,
I am backup 10g rac with rman,but there is some error when backup:
input datafile fno=00006 name=+DG1/orcl/datafile/undotbs3.265.623622323
channel c3: starting piece 1 at 13-JUN-07
RMAN-03009: failure of backup command on c1 channel at 06/13/2007 08:40:50
ORA-19504: failed to create file "/oracle/rman/db_ORCL_20070613_0fik5ji0_1_1_L0"
ORA-27040: file create error, unable to create file
Linux Error: 2: No such file or directory
channel c1 disabled, job failed on it will be run on another channel
RMAN-03009: failure of backup command on c3 channel at 06/13/2007 08:40:51
ORA-19504: failed to create file "/oracle/rman/db_ORCL_20070613_0hik5jna_1_1_L0"
ORA-27040: file create error, unable to create file
Linux Error: 2: No such file or directory
channel c3 disabled, job failed on it will be run on another channel
released channel: c1
released channel: c2
released channel: c3
RMAN-00571: ===========================================================
RMAN-00569: =============== ERROR MESSAGE STACK FOLLOWS ===============
RMAN-00571: ===========================================================
RMAN-03002: failure of release command at 06/13/2007 08:49:22
RMAN-06012: channel: c1 not allocated

Answer 1

Hi all I have the same problem. We have a 2 node rac with ASM. The archives goes to ASM. I would like to backup the archives from ASM to a filesystem. But i was given a filesystem that is only mounted on one node and it is not accessbile to the other node. When i run the following rman command i get the error on one of the channel that connect to node 2.
My question:
Can i use on channel that is connecting to node1 to backup all the archivelogs generated by node1 and node2 aswell since both the nodes have access to archive logs.
Please assist.
connect target /
connect catalog rmanrep/[email protected]
CONFIGURE CONTROLFILE AUTOBACKUP ON;
CONFIGURE CONTROLFILE AUTOBACKUP FORMAT FOR DEVICE TYPE DISK TO '/opt/oracle/archive/orcl/rman/cf_%d_%T_%F';
CONFIGURE DEVICE TYPE DISK PARALLELISM 2;
CONFIGURE CHANNEL 1 DEVICE TYPE DISK CONNECT 'SYS/oass@orcl1;
CONFIGURE CHANNEL 2 DEVICE TYPE DISK CONNECT 'SYS/oass@orcl2';
BACKUP CURRENT CONTROLFILE;
backup archivelog all format '/opt/oracle/archive/orcl/arch_bkup/%d_AL_%T_%u_s%s_p%p' delete input;
EXIT;
RMAN-03009: failure of backup command on ORA_DISK_2 channel at 03/17/2009 21:00:25
ORA-19504: failed to create file "/opt/oracle/archive/orcl/arch_bkup/SPTDEV_AL_20090317_2kka60j6_s84_p1"
ORA-27040: file create error, unable to create file
Linux-x86_64 Error: 2: No such file or directory
channel ORA_DISK_2 disabled, job failed on it will be run on another channel
Thanks
Kart