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Hi clerks,
Offloading
the backup operation to another host using disk cloning could really improve
the performance on highly busy databases ( 24x7, zero downtime and all this
stuff ...)
There are
well know white papers on this subject, ASM included, but today Im showing you
a nice way to automate the procedure using shell scripting
with EMC
TimeFinder technologies:
Assumptions:
***********
ASM
diskgroups name:
+data_${db_name}
: asm data diskgroup
+fra_${db_name}
: asm fra diskgroup
EMC Time
Finder sync groups name:
rac_${DB_NAME}_data_tf
: data group
rac_${DB_NAME}_fra_tf: fra group
There are
two scripts, one located on the production box ( bck_database.sh ) and the
other one on the backup server node ( bck_database_mirror.sh )
The second
one is remotly executed from the production host
There are a
bunch of variables along the code with selfexplanatory names I guess, anyway
let me know if you want some help
#!/bin/ksh
###
### Copyright
(c) 1988, 2010, Oracle Corporation. All
Rights Reserved.
###
###
NAME
###
bck_database.sh
###
###
DESCRIPTION
###
Database backup on third mirror
###
###
RETURNS
###
###
NOTES
###
###
MODIFIED
(DD/MM/YY)
###
Oracle 28/01/10 - Creacion
###
V_DATE=`/bin/date +%Y%m%d_%H%M%S`
V_FICH_LOG=`dirname
$0`/trace_dir_location/`basename $0`.${V_DATE}.log
exec 4>&1
tee ${V_FICH_LOG} >&4 |&
exec 1>&p 2>&1
ADMIN_DIR=`dirname $0`
. ${ADMIN_DIR}/setenv_instance.sh -- This
script should set the instance vars like Oracle Home, Sid, db_name ...
if [ $? -ne 0 ]
then
echo "Error when setting the environment."
exit
1
fi
echo "${V_DATE} ####################################################"
echo "Executing database backup:
${DB_NAME}"
echo
"####################################################################"
V_DATE=`/bin/date +%Y%m%d_%H%M%S`
echo "${V_DATE}
####################################################"
echo "Sync asm data diskgroups
..."
echo
"####################################################################"
sudo symmir -g rac_${DB_NAME}_data_tf
establish -noprompt
if [ $? -ne 0 ]
then
echo "Error when sync asm data diskgroups"
exit
2
fi
V_DATE=`/bin/date +%Y%m%d_%H%M%S`
echo "${V_DATE}
####################################################"
echo "Verifying asm data disks
..."
echo
"####################################################################"
sudo symmir -g rac_${DB_NAME}_data_tf -i 30
verify
if [ $? -ne 0 ]
then
echo "Error when verifying asm data diskgroups"
exit
3
fi
V_DATE=`/bin/date +%Y%m%d_%H%M%S`
echo "${V_DATE}
####################################################"
echo "Sync asm fra diskgroups
..."
echo
"####################################################################"
sudo symmir -g rac_${DB_NAME}_fra_tf
establish -noprompt
if [ $? -ne 0 ]
then
echo "Error when sync asm fra diskgroups"
exit
4
fi
V_DATE=`/bin/date +%Y%m%d_%H%M%S`
echo "${V_DATE}
####################################################"
echo "Verifying asm fra disks ..."
echo
"####################################################################"
sudo symmir -g rac_${DB_NAME}_fra_tf -i 30
verify
if [ $? -ne 0 ]
then
echo "Error when verifying asm fra diskgroups"
exit
5
fi
V_DATE=`/bin/date +%Y%m%d_%H%M%S`
echo "${V_DATE}
####################################################"
echo "ASM sync sucessfully
completed!"
echo "####################################################################"
V_DATE=`/bin/date +%Y%m%d_%H%M%S`
echo "${V_DATE}
####################################################"
echo "Updating status ${DB_NAME} to
BEGIN BACKUP ..."
echo
"####################################################################"
sqlplus -s /nolog <<-!
whenever sqlerror exit 1
connect
/ as sysdba
whenever sqlerror exit
alter system archive log current;
alter database ${DB_NAME} begin backup;
!
if [ $? -ne 0 ]
then
echo "Error when updating database status to BEGIN backup"
exit
6
fi
V_DATE=`/bin/date +%Y%m%d_%H%M%S`
echo "${V_DATE}
####################################################"
echo "Splitting asm data
disks....."
echo
"####################################################################"
sudo symmir -g rac_${DB_NAME}_data_tf split
-noprompt
if [ $? -ne 0 ]
then
echo "Error when splitting asm data disks"
exit
7
fi
V_DATE=`/bin/date +%Y%m%d_%H%M%S`
echo "${V_DATE}
####################################################"
echo "Updating status ${DB_NAME} to
END BACKUP ..."
echo
"####################################################################"
sqlplus -s /nolog <<-!
whenever sqlerror exit 1
connect
/ as sysdba
whenever sqlerror exit
alter
database ${DB_NAME} end backup;
alter system archive log current;
!
if [ $? -ne 0 ]
then
echo "Error when updating database status to END backup"
exit
8
fi
V_DATE=`/bin/date +%Y%m%d_%H%M%S`
echo "${V_DATE} ####################################################"
echo "Generating controlfile copies...."
echo
"####################################################################"
rman<<-!
connect target /
run
{
allocate channel ch1 type DISK;
copy current controlfile to
'+FRA_${DB_NAME}/${DB_NAME}/CONTROLFILE/control_mount.ctl';
copy current controlfile to
'+FRA_${DB_NAME}/${DB_NAME}/CONTROLFILE/control_backup.ctl';
}
!
if [ $? -ne 0 ]
then
echo "Error generating controlfile copies"
exit 9
fi
V_DATE=`/bin/date +%Y%m%d_%H%M%S`
echo "${V_DATE}
####################################################"
echo "Resync RMAN catalog ....."
echo
"####################################################################"
rman<<-!
connect target /
connect catalog
${V_RMAN_USR}/${V_RMAN_PWD}@${V_DB_CATALOG}
resync catalog;
!
if [ $? -ne 0 ]
then
echo "Error when resyncing RMAN catalog"
exit
10
fi
V_DATE=`/bin/date +%Y%m%d_%H%M%S`
echo "${V_DATE}
####################################################"
echo "Splitting asm fra
disks....."
echo "####################################################################"
sudo symmir -g rac_${DB_NAME}_fra_tf split
-noprompt
if [ $? -ne 0 ]
then
echo "Error when splitting asm fra disks"
exit
11
fi
echo "WARNING!: Calling
bck_database_mirror.sh host ${NODE_BCK_SERVER}..."
ssh ${NODO_BCK_SERVER}
${ADMIN_DIR_BCK}/bck_database_mirror.sh
if [ $? -ne 0 ]
then
echo "Error, when remote executing the backup "
exit
12
fi
V_DATE=`/bin/date +%Y%m%d_%H%M%S`
echo "${V_DATE}
####################################################"
echo "Cleaning the archived redo logs
already copied to tape ..."
echo
"####################################################################"
rman<<-!
connect target /
connect catalog ${V_RMAN_USR}/${V_RMAN_PWD}@${V_DB_CATALOG}
run
{
resync catalog;
delete noprompt archivelog all backed up 1
times to device type sbt;
}
!
if [ $? -ne 0 ]
then
echo "Error when cleaning the archived redo logs"
exit
13
fi
echo "${V_DATE} ####################################################"
echo "Backup sucessfully
executed!!"
echo
"####################################################################"
exit 0
------------------------------------------------------------------------------
------------------------** BACKUP SERVER
NODE ** -----------------------------
------------------------------------------------------------------------------
#!/bin/ksh
###
###
Copyright (c) 1988, 2010, Oracle Corporation. All Rights Reserved.
###
###
###
NAME
###
bck_database_mirror.sh
###
###
DESCRIPTION
###
Backup @ backup server
###
###
RETURNS
###
###
NOTES
###
###
MODIFIED
(DD/MM/YY)
###
Oracle
28/01/10 - Creacion
V_DATE=`/bin/date +%Y%m%d_%H%M%S`
echo
"${V_DATE} ####################################################"
echo "Starting ASM instance ..."
echo
"####################################################################"
${V_ADMIN_DIR}/start_asm.sh -- This script is supposed to start the ASM
instance in the backup server
if
[ $? -ne 0 ]
then
echo "Error when tying to start ASM instance."
exit
1
fi
.
${V_ADMIN_DIR}/setenv_asm.sh -- This script is supposed to set the env.
variables of the ASM instance
if
[ $? -ne 0 ]
then
echo "Error when setting the ASM environment"
exit
1
fi
V_DATE=`/bin/date +%Y%m%d_%H%M%S`
echo
"${V_DATE} ####################################################"
echo "The asm diskgroups/disks dettected are the following
..."
echo
"####################################################################"
sqlplus /nolog <<-!
whenever sqlerror exit 1
connect
/ as sysdba
whenever sqlerror exit
SET
LINES 200
COL PATH FORMAT A25
SELECT
DISK.MOUNT_STATUS, DISK.PATH, DISK.NAME, DISK_GROUP.NAME, DISK_GROUP.TOTAL_MB
FROM V\$ASM_DISK DISK, V\$ASM_DISKGROUP DISK_GROUP WHERE DISK.GROUP_NUMBER=DISK_GROUP.GROUP_NUMBER;
!
V_ADMIN_DIR=`dirname $0`
.
${V_ADMIN_DIR}/setenv_instance.sh -- This script is supposed to set the env.
variables of the database instance
if
[ $? -ne 0 ]
then
echo "Error when setting the database instance environment"
exit
1
fi
V_DATE=`/bin/date +%Y%m%d_%H%M%S`
echo
"${V_DATE} ####################################################"
echo "Starting ${DB_NAME} in MOUNT mode..."
echo
"####################################################################"
${V_ADMIN_DIR}/start_instance_mount.sh -- This script is supposed to do
a startup mount
if
[ $? -ne 0 ]
then
echo "Error starting
${DB_NAME} in MOUNT mode"
exit
1
fi
V_DATE=`/bin/date +%Y%m%d_%H%M%S`
echo
"${V_DATE} ####################################################"
echo "Executing RMAN backup..."
echo
"####################################################################"
rman<<-!
connect target /
connect catalog ${V_RMAN_USR}/${V_RMAN_PWD}@${V_DB_CATALOG}
run
{
allocate channel ch1 type 'SBT_TAPE'
parms'ENV=(TDPO_OPTFILE=/opt/tivoli/tsm/client/oracle/bin64/tdpo.opt)'; -- TDPO
Media Library
crosscheck
archivelog all;
backup tag BCK_CONTROLFILE_ST_${DB_NAME}
format 'ctl_%d_%s__%p_%t'
controlfilecopy
'+FRA_${DB_NAME}/${DB_NAME}/CONTROLFILE/control_backup.ctl';
backup
tag BCK_DATAFILE_ST_${DB_NAME} full
format
'db_%d_%s_%p_%t'database;
backup
tag BCK_ARCHLOG_ST_${DB_NAME} format 'al_%d_%s_%p_%t' archivelog all;
release channel ch1;
}
!
if
[ $? -ne 0 ]
then
echo "Error executing the RMAN backup"
exit
1
fi
${V_ADMIN_DIR}/stop_instance_immediate.sh -- This script is supposed to
do a shutdown immediate of the database instance
${ADMIN_DIR}/stop_asm_immediate.sh
-- This script is supposed to do a shutdown immediate of the ASM instance
exit
0
fi
Hope it
helps someone!
--L
