scripts/LJCOPY/RMAN/RMAN_DB_Backup_v34.ksh

#!/bin/ksh
# ====================================================================================================
# Title:  RMAN_DB_Backup.ksh
# Author: Richard Wilson
# Date:   03.04.2014
# File Name: RMAN_DB_Backup_v15.ksh
# Description: Uses RMAN to backup Oracle databases.
# Usage:  Usage: RMAN_DB_backup.ksh <ORACLE_SID> <RETENTION_PERIOD> <ARCH|INCR> <LEVEL_0_DAY>
#
# History:
#	17.04.2014	RW	Added %d%m%Y to Tag.
#	24.07.2014	RW	Added email notification.
#	29.07.2014	RW	Added more logic - email after 'backup backup'.
#	26.09.2014	RW	Included parameter Retention Period.
#	03.12.2014	RW	Changed to use R5DISK for UAT, SIT & TRAIN.
#	11.05.2015	RW	Removed Full backups, added Incremental backups.
#	09.02.2016	RW	Added function 'is_RMAN_running'.
#	09.02.2016	RW	Added backup 'NOT BACKED UP 2 TIMES' to capture any missed backupsets.
#	25.04.2017	RW	Added 'Day' input parameter and 'is_day_valid' function.
#	10.05.2017	RW	Added Level-0 Backup Day input parameter.
#       10.05.2017      RW      Moved CROSSCHECKS into Level-0 only.
#	12.12.2017	RW	Added 'is_not_guarded' function to allow backup on STANDBY.
# 	21.12.2017	RW	Added dbhome_1/db_1 logic for ORACLE_HOME.
# -----------------------------------------------------------------------------------------------------

function is_fs_mounted
{
mount | grep "${BACKUP_FS}" > /dev/null && return 0 || return 1
}


function is_sid_valid
{
if [ `ps -ef | grep -v grep | grep "ora_pmon_${ORACLE_SID}$" | wc -l 2> /dev/null` -eq 0 ]
then
	return 1
else
	return 0
fi
}


function is_day_valid
{
	case "${LEVEL_0_DAY}" in
		MON|TUE|WED|THU|FRI|SAT|SUN|ZZZ) 
			return 0;;
	        *) 	return 1;;
	esac
}

	
function is_RMAN_running
{
return `${ORACLE_HOME}/bin/sqlplus -S / "as sysdba" <<-EOF
        set pagesize 0 feedback off verify off heading off termout off echo off
        select  count(1) from sys.v\\$RMAN_STATUS where status like 'RUNNING%';
EOF`
}


function is_not_guarded
{
return `${ORACLE_HOME}/bin/sqlplus -S / "as sysdba" <<-EOF
        set pagesize 0 feedback off verify off heading off termout off echo off
        select count(1) from sys.v\\$archive_dest where status = 'VALID' and target = 'STANDBY';
EOF`
}


set_asm_dest()
{
        case "${ORACLE_SID}" in
                SIT2|DMSIT|IFCE|SYSTST|SYSTST2|GOLD|GOLD2|PACK|PACK2|UPK) asm_disk="+R5DISK";;
                *) asm_disk="+FRA";;
        esac
}


build_cmdfile()
{
# Build RMAN command file.
echo "connect target / "        	                   	                     					>  ${RMAN_CMD_FILE}
echo "connect catalog rcatadm/RCATADM@RCAT"										>> ${RMAN_CMD_FILE}	
echo "run {"                                                                    					>> ${RMAN_CMD_FILE}
echo "sql 'alter session set optimizer_mode=RULE';"									>> ${RMAN_CMD_FILE}
echo "resync catalog;"													>> ${RMAN_CMD_FILE}
echo "sql 'ALTER SYSTEM SET CONTROL_FILE_RECORD_KEEP_TIME=60 SCOPE=BOTH';"						>> ${RMAN_CMD_FILE}
echo "CONFIGURE RETENTION POLICY TO RECOVERY WINDOW OF ${RETENTION_DAYS} DAYS;"       					>> ${RMAN_CMD_FILE}

if is_not_guarded
then	#P!DG
	[ "${DEBUG}" == "Y" ] && echo -e "DEBUG: is_not_guarded: PRIMARY - NODG"
	#echo "CONFIGURE ARCHIVELOG DELETION POLICY TO BACKED UP 1 TIMES TO DISK COMPLETED BEFORE 'SYSDATE-${RETENTION_DAYS}';"         >> ${RMAN_CMD_FILE}
	echo "CONFIGURE ARCHIVELOG DELETION POLICY TO NONE;"                                                            >> ${RMAN_CMD_FILE}
else 	#P+DG
	[ "${DEBUG}" == "Y" ] && echo -e "DEBUG: is_guarded: PRIMARY - DG"
	echo "CONFIGURE ARCHIVELOG DELETION POLICY TO BACKED UP 1 TIMES TO DISK APPLIED ON ALL STANDBY;"                >> ${RMAN_CMD_FILE}
	# echo "CONFIGURE ARCHIVELOG DELETION POLICY TO NONE;"                                                          >> ${RMAN_CMD_FILE}
fi	

echo "CONFIGURE CONTROLFILE AUTOBACKUP ON;"                                     					>> ${RMAN_CMD_FILE}
echo "CONFIGURE CONTROLFILE AUTOBACKUP FORMAT FOR DEVICE TYPE DISK CLEAR;"                                              >> ${RMAN_CMD_FILE}

set_asm_dest
echo "ALLOCATE CHANNEL disk1 DEVICE TYPE DISK FORMAT '${asm_disk}';"                					>> ${RMAN_CMD_FILE}
echo "ALLOCATE CHANNEL disk2 DEVICE TYPE DISK FORMAT '${asm_disk}';"                					>> ${RMAN_CMD_FILE}
echo "ALLOCATE CHANNEL disk3 DEVICE TYPE DISK FORMAT '${asm_disk}';"                					>> ${RMAN_CMD_FILE}
echo "ALLOCATE CHANNEL disk4 DEVICE TYPE DISK FORMAT '${asm_disk}';"                					>> ${RMAN_CMD_FILE}

echo "CONFIGURE SNAPSHOT CONTROLFILE NAME TO '${ORACLE_HOME}/dbs/snapcf_${ORACLE_SID}.f';"    				>> ${RMAN_CMD_FILE}
echo "sql 'ALTER SYSTEM ARCHIVE LOG CURRENT';" 										>> ${RMAN_CMD_FILE}

[ "${DEBUG}" == "Y" ] && echo "DEBUG: Backup Type is set to ${BACKUP_TYPE}."
[ "${DEBUG}" == "Y" ] && echo "DEBUG: Level ZERO Backup Day is set to ${LEVEL_0_DAY}."

case ${BACKUP_TYPE} in
	"INCR") 
		echo "CROSSCHECK backup of database;"  			                                                 >> ${RMAN_CMD_FILE}
                echo "CROSSCHECK backup of controlfile;"                			                         >> ${RMAN_CMD_FILE}
                echo "CROSSCHECK backup of spfile;"                                             		 	 >> ${RMAN_CMD_FILE}
                echo "CROSSCHECK backup of archivelog all;"                                             		 >> ${RMAN_CMD_FILE}
		case `date +%a | tr "[a-z]" "[A-Z]"` in
		${LEVEL_0_DAY}) [ "${DEBUG}" == "Y" ] && echo "DEBUG: Type: INCR Level 0"
				echo "BACKUP as compressed backupset SECTION SIZE 20G INCREMENTAL LEVEL 0 TAG='L0_${ORACLE_SID}_`date +%d%m%YT%H%M%S`' DATABASE include current CONTROLFILE plus ARCHIVELOG;" >> ${RMAN_CMD_FILE}
                		;;
        		     *) [ "${DEBUG}" == "Y" ] && echo "DEBUG: Type: INCR Level 1"
				echo "BACKUP as compressed backupset SECTION SIZE 20G INCREMENTAL LEVEL 1 TAG='L1_${ORACLE_SID}_`date +%d%m%YT%H%M%S`' DATABASE include current CONTROLFILE plus ARCHIVELOG;" >> ${RMAN_CMD_FILE}
                		;;
		esac;;
	"ARCH")	[ "${DEBUG}" == "Y" ] && echo "DEBUG: Type: ARCH"
		echo "backup as compressed backupset TAG='Arch_${ORACLE_SID}_`date +%d%m%YT%H%M%S`' archivelog all;" 	>> ${RMAN_CMD_FILE} 
		;;
esac

# echo "delete noprompt archivelog all backed up 1 times to DEVICE TYPE disk completed before 'sysdate-1';"    		>> ${RMAN_CMD_FILE}
# echo "delete noprompt archivelog all backed up 2 times to DEVICE TYPE disk completed before 'sysdate-1';" 		>> ${RMAN_CMD_FILE}
# echo "delete noprompt archivelog all backed up 1 times to DEVICE TYPE disk completed before 'sysdate-${RETENTION_DAYS}';" >> ${RMAN_CMD_FILE}
# echo "delete noprompt expired backup;"	>> ${RMAN_CMD_FILE}


if is_fs_mounted
then
	[ -d ${BACKUP_FS}/${ORACLE_SID} ] || mkdir ${BACKUP_FS}/${ORACLE_SID} 
        /bin/find ${BACKUP_FS}/${ORACLE_SID} -type f -empty -delete
        echo "backup backupset all NOT BACKED UP 2 TIMES format '${BACKUP_FS}/${ORACLE_SID}/%U';" >> ${RMAN_CMD_FILE}
else
        echo -e "WARNING: Backup filesystem not mounted....."
fi

echo "DELETE FORCE NOPROMPT OBSOLETE;"                                                  	>> ${RMAN_CMD_FILE}
echo "}"                                                                                        >> ${RMAN_CMD_FILE}
echo "exit"                                                                                     >> ${RMAN_CMD_FILE}
}

# =====================================================================================================================================================================
export DEBUG="Y"  # "Y"||"N"
export ORACLE_SID=`echo ${1} | tr "[a-z]" "[A-Z]"`
export RETENTION_DAYS=${2}
export BACKUP_TYPE=`echo ${3} | tr "[a-z]" "[A-Z]"`
export LEVEL_0_DAY=`echo ${4:-ZZZ} | tr "[a-z]" "[A-Z]"`
test `uname -n` = "uks-odbnrgtst-02" && export ORACLE_HOME="/u01/app/oracle/product/11.2.0/dbhome_1" || export ORACLE_HOME="/u01/app/oracle/product/11.2.0/db_1"
export SCRIPT_DIR="/home/oracle/Scripts/RMAN"

[ "${DEBUG}" == "Y" ] && echo -e "DEBUG: Debugging is switched on."
[ "${DEBUG}" == "Y" ] && export RMAN_CMD_FILE=${SCRIPT_DIR}/${ORACLE_SID}_rman_cmds_DEBUG.rman || export RMAN_CMD_FILE=${SCRIPT_DIR}/${ORACLE_SID}_rman_cmds.rman

export BACKUP_FS="/backups"
export BACKUP_LOG=${SCRIPT_DIR}/logs/${ORACLE_SID}_${BACKUP_TYPE}_backup_log.log

[ -d  ${SCRIPT_DIR}/logs ] || mkdir ${SCRIPT_DIR}/logs

if [ ${#} -le 4 ] 
then
	echo `date` >> ${BACKUP_LOG}
	if is_not_guarded  # 0;SIP|SBY
	then
		if is_RMAN_running
		then
			ORACLE_SID=`echo ${ORACLE_SID} | tr "[a-z]" "[A-Z]"`
			if is_sid_valid
			then
				if [[ "${2}" = +([0-9]) ]]
				then
					if [[ "${BACKUP_TYPE}" == "ARCH" || "${BACKUP_TYPE}" == "INCR" ]]
					then
						if is_day_valid
						then		
							build_cmdfile
							[ "${DEBUG}" == "Y" ] && echo ${ORACLE_HOME}/bin/rman cmdfile=${RMAN_CMD_FILE} log=${SCRIPT_DIR}/logs/${ORACLE_SID}_RMAN_${BACKUP_TYPE}_backup.log || ${ORACLE_HOME}/bin/rman cmdfile=${RMAN_CMD_FILE} log=${SCRIPT_DIR}/logs/${ORACLE_SID}_RMAN_${BACKUP_TYPE}_backup.log
							if [ $? = 0 ]
                                        		then
                                               			echo -e "\nINFO: ${ORACLE_SID} Database Backup Successful." >>  ${BACKUP_LOG}
                                        		else
                                               			echo -e "\nERROR: ${ORACLE_SID} Database Backup Failed." >>  ${BACKUP_LOG}
                                        		fi
						else
							echo -e "\nERROR: Parameter 4: Invalid Level-0 Backup Day entered <Mon|Tue|Wed|Thu|Fri|Sat|Sun>.\n"
						fi
					else
						echo -e "\nERROR: Parameter 3: Backup Type must be <INCR> or <ARCH>.\n"
                        		fi
				else
					echo -e "\nERROR: Parameter 2: Retention Days must be numeric, in days.\n"
				fi 
			else
	 			echo -e "\nERROR: Parameter 1: Database '${ORACLE_SID}' does not exist.\n"
			fi
		else
       			echo -e "\nINFO: RMAN is already running.\n"
		fi
	fi
else
 	echo -e "\nUsage: RMAN_DB_backup.ksh <ORACLE_SID> <RETENTION_DAYS> <ARCH|INCR> <FULL_BACKUP_DAY>\n"
fi

# End of File