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NBU backup oracle full script comments

2025-02-24 Update From: SLTechnology News&Howtos shulou NAV: SLTechnology News&Howtos > Database >

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Root@gzwgnbu1 # more hot_database_backup.sh

#! / bin/sh

# $Header: hot_database_backup.sh,v 1.3 2010-08-04 17:56:02 $

#

# bcpyrght

# *

# * $VRTScprght: Copyright 2014 Symantec Corporation, All Rights Reserved $*

# *

# ecpyrght

#

#-

# hot_database_backup.sh

#-

# This script uses Recovery Manager to take a hot (inconsistent) database

# backup. A hot backup is inconsistent because portions of the database are

# being modified and written to the disk while the backup is progressing.

# You must run your database in ARCHIVELOG mode to make hot backups. It is

# assumed that this script will be executed by user root. In order for RMAN

# to work properly we switch user (su -) to the oracle dba account before

# execution. If this script runs under a user account that has Oracle dba

# privilege, it will be executed using this user's account.

#-

#-

# Determine the user which is executing this script.

#-

CUSER= `id | cut-d "("-f2 | cut-d ")"-f1`

#-

# Put output in .out. Change as desired.

# Note: output directory requires write permission.

#-

RMAN_LOG_FILE=$ {0} .out

#-

# You may want to delete the output file so that backup information does

# not accumulate. If not, delete the following lines.

#-

If [- f "$RMAN_LOG_FILE"]

Then

Rm-f "$RMAN_LOG_FILE"

Fi

#-

# Initialize the log file.

#-

Echo > > $RMAN_LOG_FILE

Chmod 666 $RMAN_LOG_FILE

#-

# Log the start of this script.

#-

Echo Script $0 > > $RMAN_LOG_FILE

Echo = started on `date` = > > $RMAN_LOG_FILE

Echo > > $RMAN_LOG_FILE

#-

# Replace / db/oracle/product/ora102, below, with the Oracle home path.

#-

ORACLE_HOME=/db/oracle/product/ora102 # oracle directory

Export ORACLE_HOME

#-

# Replace ora102, below, with the Oracle SID of the target database.

#-

Database backed up by ORACLE_SID=ora102 #

Export ORACLE_SID

#-

# Replace ora102, below, with the Oracle DBA user id (account).

#-

System users used by ORACLE_USER=ora102 backups

#-

# Set the target connect string.

# Replace "sys/manager", below, with the target connect string.

#-

TARGET_CONNECT_STR=sys/manager # sys/manager changed to / #

#-

# Set the Oracle Recovery Manager name.

#-

Location of the rman command in RMAN=$ORACLE_HOME/bin/rman # NBU

#-

# Print out the value of the variables set by this script.

#-

Echo > > $RMAN_LOG_FILE

Echo "RMAN: $RMAN" > > $RMAN_LOG_FILE

Echo "ORACLE_SID: $ORACLE_SID" > > $RMAN_LOG_FILE

Echo "ORACLE_USER: $ORACLE_USER" > > $RMAN_LOG_FILE

Echo "ORACLE_HOME: $ORACLE_HOME" > > $RMAN_LOG_FILE

#-

# Print out the value of the variables set by bphdb.

#-

Echo > > $RMAN_LOG_FILE

Echo "NB_ORA_FULL: $NB_ORA_FULL" > > $RMAN_LOG_FILE

Echo "NB_ORA_INCR: $NB_ORA_INCR" > > $RMAN_LOG_FILE

Echo "NB_ORA_CINC: $NB_ORA_CINC" > > $RMAN_LOG_FILE

Echo "NB_ORA_SERV: $NB_ORA_SERV" > > $RMAN_LOG_FILE

Echo "NB_ORA_POLICY: $NB_ORA_POLICY" > > $RMAN_LOG_FILE

#-

# NOTE: This script assumes that the database is properly opened. If desired

# this would be the place to verify that.

#-

Echo > > $RMAN_LOG_FILE

#-

# If this script is executed from a NetBackup schedule, NetBackup

# sets an NB_ORA environment variable based on the schedule type.

# The NB_ORA variable is then used to dynamically set BACKUP_TYPE

# For example, when:

# schedule type is BACKUP_TYPE is

#--

# Automatic Full INCREMENTAL LEVEL=0

# Automatic Differential Incremental INCREMENTAL LEVEL=1

# Automatic Cumulative Incremental INCREMENTAL LEVEL=1 CUMULATIVE

#

# For user initiated backups, BACKUP_TYPE defaults to incremental

# level 0 (full). To change the default for a user initiated

# backup to incremental or incremental cumulative, uncomment

# one of the following two lines.

# BACKUP_TYPE= "INCREMENTAL LEVEL=1"

# BACKUP_TYPE= "INCREMENTAL LEVEL=1 CUMULATIVE"

#

# Note that we use incremental level 0 to specify full backups.

# That is because, although they are identical in content, only

# the incremental level 0 backup can have incremental backups of

# level > 0 applied to it.

#-

If ["$NB_ORA_FULL" = "1"]

Then

Echo "Full backup requested" > > $RMAN_LOG_FILE

BACKUP_TYPE= "INCREMENTAL LEVEL=0"

Elif ["$NB_ORA_INCR" = "1"]

Then

Echo "Differential incremental backup requested" > > $RMAN_LOG_FILE

BACKUP_TYPE= "INCREMENTAL LEVEL=1"

Elif ["$NB_ORA_CINC" = "1"]

Then

Echo "Cumulative incremental backup requested" > > $RMAN_LOG_FILE

BACKUP_TYPE= "INCREMENTAL LEVEL=1 CUMULATIVE"

Elif ["$BACKUP_TYPE" = ""]

Then

Echo "Default-Full backup requested" > > $RMAN_LOG_FILE

BACKUP_TYPE= "INCREMENTAL LEVEL=0"

Fi

#-

# Call Recovery Manager to initiate the backup. This example does not use a

# Recovery Catalog. If you choose to use one, replace the option 'nocatalog'

# from the rman command line below with the

# 'catalog / @' statement.

#

# Note: Any environment variables needed at run time by RMAN

# must be set and exported within the switch user (su) command.

#-

# Backs up the whole database. This backup is part of the incremental

# strategy (this means it can have incremental backups of levels > 0)

# applied to it).

#

# We do not need to explicitly request the control file to be included

# in this backup, as it is automatically included each time file 1 of

# the system tablespace is backed up (the inference: as it is a whole

# database backup, file 1 of the system tablespace will be backed up

# hence the controlfile will also be included automatically).

#

# Typically, a level 0 backup would be done at least once a week.

#

# The scenario assumes:

# o you are backing your database up to two tape drives

# o you want each backup set to include a maximum of 5 files

# o you wish to include offline datafiles, and read-only tablespaces

# in the backup

# o you want the backup to continue if any files are inaccessible.

# o you are not using a Recovery Catalog

# o you are explicitly backing up the control file. Since you are

# specifying nocatalog, the controlfile backup that occurs

# automatically as the result of backing up the system file is

# not sufficient; it will not contain records for the backup that

# is currently in progress.

# o you want to archive the current log, back up all the

# archive logs using two channels, putting a maximum of 20 logs

# in a backup set, and deleting them once the backup is complete.

#

# Note that the format string is constructed to guarantee uniqueness and

# to enhance NetBackup for Oracle backup and restore performance.

#

#

# NOTE WHEN USING NET SERVICE NAME: When connecting to a database

# using a net service name, you must use a send command or a parms operand to

# specify environment variables. In other words, when accessing a database

# through a listener, the environment variables set at the system level are not

# visible when RMAN is running. For more information on the environment

# variables, please refer to the NetBackup for Oracle Admin. Guide.

#

#-

CMD_STR= "

ORACLE_HOME=$ORACLE_HOME

Export ORACLE_HOME

ORACLE_SID=$ORACLE_SID

Export ORACLE_SID

$RMAN target $TARGET_CONNECT_STR nocatalog msglog $RMAN_LOG_FILE append

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