How to copy the ASM files on host filesystem.

Question

Hello All,
There is a question come up in my mind that can we perform the copy/delete/move of ASM files to the host filesystem while the ASM instance is down.
For instance... To copy the file ASM file through AMCMD utility when the ASM instance is running.
ASMCMD> cp spfilenode.ora /u01
copying +DATA/NODE/spfilenode.ora -> /u01/spfilenode.ora
Now my question is, Can I copy/delete/move that file on OS filesystems when the ASM instance is down.
regards,
rohit

Answer 1

Hi,
1- Copy from ASM to FileSystem using cp command.
2- Copy from ASM to FileSystem using DBMS_FILE_TRANSFER.
1) In the first method, when I copy one file, I took more than 1 minute, so the following script would take me more than 1 days (I guess so).
#!/bin/ksh
# This script copies files from FRA on ASM to local disk
ORACLE_SID=+ASM2
ASMLS=/vasgatedb/app/vsgbkp/asm_ls.txt ##{ASM files list}
BKP=+data/vsgdb/vsgbkp/`date +%Y_%m_%d` ##{source location of files}
LOCALBACKUPDIR=/vasgatedb/app/vsgbkp  ##{destination filesystem}
LOG=/vasgatedb/app/vsgbkp/asm_log.txt ##{log file}
# Get the list of files
$ORACLE_HOME/bin/asmcmd > $ASMLS <<EOF
ls $BKP
exit
EOF
# Clean the list by removing "ASMCMD>"
sed -i 's/ASMCMD> //g' $ASMLS
##cat $ASMLS
echo `date` > $LOG
# Copy files one by one
for FILENAME in `cat $ASMLS`
do
if [[ ! -f $LOCALBACKUPDIR/${FILENAME} ]]
then
$ORACLE_HOME/bin/asmcmd >> $LOG <<EOF
cp $BKP/$FILENAME $LOCALBACKUPDIR
EOF
fi
done
echo `date` >> $LOG
2) The second method, DBMS_FILE_TRANSFER took me less than 1 second to copy one file completely.
sys@VSGDB> set timing on
sys@VSGDB> exec dbms_file_transfer.COPY_FILE('asm_dir','level_0_vsgdb_9998_813844797.bkp','fs_dir','level_0_vsgdb_9998_813844797.bkp');
PL/SQL procedure successfully completed.
Elapsed: 00:00:00.38