Clone from standby ended in ARC: Cannot archive online log based on backup

Question

Hi
I m into scenario where my prod db is in one data center and standby is in other data center.
Both are geographically separated. I have to get a copy of prod on to standby data center side.
Sending data over the network is taking long time either with duplicate db from active db or take backup and copy over standby side and restore it.
so i thought of duplicate db from standby db which is in same data center, using 11g RMAN duplicate from active standby command.
I have simulated scenario which is as below
oracle version 11.2.0.1
os version REHL 5.4
My procedure & parameter are as below.
on standby side from where i m copying (TARGET)
1) on standby
alter database recover managed standby db cancel;
2)alter database convert to snapshot standby;
which gave me
/u01/data/DGSTD/archive/1_152_750425930.dbf
/u01/data/DGSTD/archive/1_153_750425930.dbf
*/u01/data/DGSTD/archive/1_1_752604441.dbf*
*/u01/data/DGSTD/archive/1_2_752604441.dbf*
3) alter database open;
4) alter system switch logfile;
now from rman
RMAN> connect target sys/system@DGSTD
connect auxiliary sys/system@GGR
connected to target database: DGPRM (DBID=578436102)
RMAN>
connected to auxiliary database: NOTREAL (not mounted)
RMAN>
run{
allocate channel prmy1 type disk;
allocate channel prmy2 type disk;
allocate channel prmy3 type disk;
allocate channel prmy4 type disk;
allocate channel prmy5 type disk;
allocate auxiliary channel stby1 type disk;
duplicate target database to ggr from active database
spfile
parameter_value_convert='DGSTD','GGR','/u01/data/DGSTD/','/u01/data/ggr/'
set db_file_name_convert='/u01/oradata/DGSTD/','/u01/data/ggr/'
set log_file_name_convert='/u01/oradata/DGSTD/','/u01/data/ggr/'
set 'db_unique_name'='ggr'
set 'audit_file_dest'='/u00/app/oracle/admin/ggr/adump'
set 'sga_max_size'='140m'
set 'pga_aggregate_target'='28940697'
nofilenamecheck;
and when output of rman reaches up below
Starting backup at 31-MAY-11
channel prmy1: starting datafile copy
input datafile file number=00001 name=/u01/data/DGSTD/datafile/system01.dbf
channel prmy2: starting datafile copy
input datafile file number=00002 name=/u01/data/DGSTD/datafile/sysaux01.dbf
in alert log of clone db it gives massive error saying
ARC3: Cannot archive online log based on backup controlfile
ARC2: Cannot archive online log based on backup controlfile
ARC3: Cannot archive online log based on backup controlfile
ARC2: Cannot archive online log based on backup controlfile
and it fill up whole fs. and finally duplicate command throws error.
not sure what i m missing of inside duplicate command or is it valid to duplicate database from snapshot standby.
can somebody light on it please
Edited by: user12281508 on Jun 1, 2011 10:26 AM
Edited by: user12281508 on Jun 1, 2011 10:28 AM

Answer 1

duplicate target database to ggr from active database
spfile
parameter_value_convert='DGSTD','GGR','/u01/data/DGSTD/','/u01/data/ggr/'
set db_file_name_convert='/u01/oradata/DGSTD/','/u01/data/ggr/'
set log_file_name_convert='/u01/oradata/DGSTD/','/u01/data/ggr/'
set 'db_unique_name'='ggr'
set 'audit_file_dest'='/u00/app/oracle/admin/ggr/adump'
set 'sga_max_size'='140m'
set 'pga_aggregate_target'='28940697'
nofilenamecheck;
}I think you should use standby cluase as
DUPLICATE TARGET DATABASE TO dup1 FOR STANDBY FROM ACTIVE DATABASE;