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RMAN Backup script

RMAN

This is a sample backup script I used, it has already a lot of options. Feel free to make any modification you want. If you add some good enhancements, let me know I can put them here so everybody can profit from them.

RMAN Backup script

Shell
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#!/bin/bash
##############################################################################
#                                       RMAN BACKUPS
##############################################################################
#
# Description: This script create a RMAN backup based on parameter passed
#
##############################################################################
#
# Author: Cyrille MODIANO
#
# Version : 1.0 (2016-07-12)
# Version : 1.1 (2016-12-15) - Added compression
# Version : 1.2 (2017-01-18) - Added parallelism and backup of a list of databases
#
##############################################################################
 
usage () {
echo "Usage : SID BACKUP_TYPE COMPRESSION PARALLELISM
        SID : SID, comma separated list of databases or ALL for all databases (running)
        BACKUP_TYPE : INCR, FULL, COLD or ARCH
        COMPRESS : COMPRESS or NOCOMPRESS to compress or not the backup
        PARALLEL : defines the number of channel to use
 
        exemple backup full : rman_backup.sh db1 FULL COMPRESS 16
        exemple backup arch : rman_backup.sh db1 ARCH NOCOMPRESS 2
"
}
 
BACKUP_BASE=/Data_Domain/oracle/prod/
 
# Validating du number of parameters passed
if [ $# -lt 4 ]; then
    usage
    exit 1
fi
 
# Parameters provided
DB_LIST=$1
BACKUP_TYPE=$2
PARALLEL=$4
 
# Backup type validation
case $BACKUP_TYPE in
    FULL)
        LEVEL="incremental level 0"
    ;;
    INCR)
        LEVEL="incremental level 1"
    ;;
    ARCH)
        LEVEL=""
    ;;
    COLD)
        LEVEL=""
    ;;
    *)
        usage
    exit 1
    ;;
esac
 
# Compression validation
if [ $3 = 'COMPRESS' ]; then
    COMPRESS='AS COMPRESSED BACKUPSET'
else
    if [ $3 = 'NOCOMPRESS' ]; then
        COMPRESS=''
    else
        usage
        exit 1
    fi
fi
 
##Variables definition
export NLS_DATE_FORMAT='dd/mm/yyyy hh24:mi:ss'
DATE=`date +"%Y%m%d%H%M%S"`
BASEDIR=$(dirname "$0")
LOGDIR=$BASEDIR/log
PATH=$PATH:/usr/local/bin
 
##backup function
function backup_database() {
    # Set Oracle Environment for database
    ORACLE_SID=$1
    ORAENV_ASK=NO
    . oraenv
 
    OUTPUT_SID=${ORACLE_SID}
    BACKUP_DIR=$BACKUP_BASE/${ORACLE_SID}
    LOGFILE=$LOGDIR/rman_backup_${ORACLE_SID}_${BACKUP_TYPE}_${DATE}.log
    
 
    # Controlfile backup directory
    CF_BACKUP="'$BACKUP_DIR/autobackup/cf_sp_%F'"
    FORMAT_DATA="format '${BACKUP_DIR}/data_%d_${BACKUP_TYPE}_bks%s_%T_%U.bck'"
    FORMAT_ARCHIVE="format '${BACKUP_DIR}/arch_%d_${BACKUP_TYPE}_bks%s_%T_%U.bck'"
 
    if [ $BACKUP_TYPE = 'COLD' ]; then
        sqlplus -s / as sysdba <<EOF
            shutdown immediate;
            startup mount;
            exit
EOF
        rman target /  << EOF >> $LOGFILE 2>&1
            CONFIGURE CONTROLFILE AUTOBACKUP ON;
            CONFIGURE CONTROLFILE AUTOBACKUP FORMAT FOR DEVICE TYPE DISK TO ${CF_BACKUP};
            CONFIGURE DEVICE TYPE DISK BACKUP TYPE TO BACKUPSET PARALLELISM ${PARALLEL};
            run {
                backup ${COMPRESS} database section size 50G $FORMAT_DATA;
                delete noprompt obsolete;
                }
            exit
EOF
 
        sqlplus -s / as sysdba <<EOF
            alter database open;
            exit
EOF
 
    else
        if [  $BACKUP_TYPE = 'ARCH' ]; then
            rman target /  << EOF >> $LOGFILE
                CONFIGURE CONTROLFILE AUTOBACKUP ON;
                CONFIGURE CONTROLFILE AUTOBACKUP FORMAT FOR DEVICE TYPE DISK TO ${CF_BACKUP};
                CONFIGURE DEVICE TYPE DISK BACKUP TYPE TO BACKUPSET PARALLELISM ${PARALLEL};
                run {
                    backup ${COMPRESS} archivelog all $FORMAT_ARCHIVE delete input filesperset 10;
                    delete noprompt obsolete;
                    }
                exit
EOF
        else
            rman target /  << EOF >> $LOGFILE 2>&1
                CONFIGURE CONTROLFILE AUTOBACKUP ON;
                CONFIGURE CONTROLFILE AUTOBACKUP FORMAT FOR DEVICE TYPE DISK TO ${CF_BACKUP};
                CONFIGURE DEVICE TYPE DISK BACKUP TYPE TO BACKUPSET PARALLELISM ${PARALLEL};
                run {
                    backup ${COMPRESS} archivelog all $FORMAT_ARCHIVE delete input filesperset 10;
                    backup ${COMPRESS} ${LEVEL} database section size 50G $FORMAT_DATA include current controlfile;
                    backup ${COMPRESS} archivelog all $FORMAT_ARCHIVE delete input filesperset 10;
                    delete noprompt obsolete;
                    }
                exit
EOF
        fi
    fi
 
    # Validate Errors in the log.
    ERRORLIST=$(egrep "^RMAN-[0-9]*:|^ORA-[0-9]*:" $LOGFILE)
    ERRORLIST=$(echo $ERRORLIST)
    if [ -n "$ERRORLIST" ]
    then
        SUBJECT="$(date +%y)/$(date +%m)/$(date +%d) $(date +%H).$(date +%M).$(date +%S) - `hostname` - Backup Report ${OUTPUT_SID} - ERROR"
    else
        SUBJECT="$(date +%y)/$(date +%m)/$(date +%d) $(date +%H).$(date +%M).$(date +%S) - `hostname` - Backup Report ${OUTPUT_SID}"
    fi
    cat -v $LOGFILE | mail -s "$SUBJECT" example@example.com
}
 
if [ $1 = 'ALL' ]; then
    for database in `ps -ef | grep pmon | egrep -v 'ASM|grep' | awk '{print $8}' | cut -d_ -f3`
    do
        backup_database $database
    done
else
    for database in $(echo $1 | sed "s/,/ /g")
    do
        backup_database $database
    done
fi

 

Intoduction to Oracle Rest Data Services

Oracle Internals

Presentation

First, let’s talk about REST apis. REST apis are very popular nowdays because they are easily accessible from any client able to make http(s) requests. The beauty of this is that you can access different systems through these rest apis independantly of how the system is built in the backend. For example I can access with a simple curl command the twitter, youtube or any public api which will return me data.

Rest APIs usually present data as a JSON object. If your are not already familiar with JSON here is an example of a JSON object:

JavaScript
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{"menu": {
  "id": "file",
  "value": "File",
  "popup": {
    "menuitem": [
      {"value": "New", "onclick": "CreateNewDoc()"},
      {"value": "Open", "onclick": "OpenDoc()"},
      {"value": "Close", "onclick": "CloseDoc()"}
    ]
  }
}}

Oracle 12.1.0.2 introduced the support of JSON as a datatype and methods to query JSON objects. This make things a lot easier when you have to work with these data structures.

Continue reading Intoduction to Oracle Rest Data Services →

Creating an ACFS filesystem

RAC

ACFS

About ACFS filesystem

ACFS mean  Automatic Storage Management Cluster File System. This filesystem volume resides inside the ASM database and can be used to store database files but also any type of files with or without direct relation to the database.

Oracle ACFS does not support Oracle Grid Infrastructure or Oracle Cluster Registry voting files.

The ACFS filesystem can be extended dynamically without any service interruption, you just need to add space to the diskgroup hosting the ACFS volume and then extend the filesystem. Continue reading Creating an ACFS filesystem →