{"id":5065,"date":"2012-07-09T22:08:32","date_gmt":"2012-07-10T03:08:32","guid":{"rendered":"http:\/\/jianmingli.com\/wp\/?p=5065"},"modified":"2012-08-25T23:18:43","modified_gmt":"2012-08-26T04:18:43","slug":"1z1-102-backup-and-recovery-operations","status":"publish","type":"post","link":"https:\/\/jianmingli.com\/wp\/?p=5065","title":{"rendered":"WebLogic 11g Backup and Recovery Operations"},"content":{"rendered":"
\n

Contents<\/h2>\n
    \n\t
  1. \n\t\tOverview<\/a>\n\t\t
      \n\t\t\t
    1. \n\t\t\t\tImpact of Administration Server Failure<\/a>\n\t\t\t<\/li>\n\t\t\t
    2. \n\t\t\t\tComponents to Backup<\/a>\n\t\t\t<\/li>\n\t\t\t
    3. \n\t\t\t\tVarious Oracle Homes<\/a>\n\t\t\t<\/li>\n\t\t\t
    4. \n\t\t\t\tUnderstand Backup<\/a>\n\t\t\t<\/li>\n\t\t\t
    5. \n\t\t\t\tUnderstand Recovery<\/a>\n\t\t\t<\/li>\n\t\t\t
    6. \n\t\t\t\tBackup and Recovery Examples<\/a>\n\t\t\t<\/li>\n\t\t<\/ol>\n\t
    7. \n\t\tDescribe backup and recovery strategies<\/a>\n\t\t
        \n\t\t\t
      1. \n\t\t\t\tOverview of Backup Strategies<\/a>\n\t\t\t<\/li>\n\t\t\t
      2. \n\t\t\t\tBackup Types<\/a>\n\t\t\t<\/li>\n\t\t\t
      3. \n\t\t\t\tBackup Recommendations<\/a>\n\t\t\t\t
          \n\t\t\t\t\t
        1. \n\t\t\t\t\t\tWhen to Perform an Offline Backup<\/a>\n\t\t\t\t\t<\/li>\n\t\t\t\t\t
        2. \n\t\t\t\t\t\tWhen to Perform an Online Backup<\/a>\n\t\t\t\t\t<\/li>\n\t\t\t\t<\/ol>\n\t\t\t
        3. \n\t\t\t\tOnline Backup Data Limitations<\/a>\n\t\t\t<\/li>\n\t\t\t
        4. \n\t\t\t\tDirectories to Restore<\/a>\n\t\t\t<\/li>\n\t\t\t
        5. \n\t\t\t\tPossible Cause of Failure<\/a>\n\t\t\t<\/li>\n\t\t<\/ol>\n\t
        6. \n\t\tPerform a full offline backup<\/a>\n\t\t
            \n\t\t\t
          1. \n\t\t\t\tCreate a Record of Installation<\/a>\n\t\t\t<\/li>\n\t\t<\/ol>\n\t
          2. \n\t\tPerform an Instance Home backup<\/a>\n\t<\/li>\n\t
          3. \n\t\tSetup automatic backup of WLS configuration<\/a>\n\t<\/li>\n\t
          4. \n\t\tPerform an offline domain recovery<\/a>\n\t\t
              \n\t\t\t
            1. \n\t\t\t\tRecovery Homes<\/a>\n\t\t\t<\/li>\n\t\t\t
            2. \n\t\t\t\tRecover Managed Server<\/a>\n\t\t\t<\/li>\n\t\t\t
            3. \n\t\t\t\tRecover Admin Server Configuration<\/a>\n\t\t\t<\/li>\n\t\t\t
            4. \n\t\t\t\tRecover Cluster<\/a>\n\t\t\t<\/li>\n\t\t\t
            5. \n\t\t\t\tRestore OPMN-Managed Components to a New Computer<\/a>\n\t\t\t<\/li>\n\t\t<\/ol>\n\t
            6. \n\t\tStart the admin server on a backup computer<\/a>\n\t<\/li>\n\t
            7. \n\t\tReferences<\/a>\n\t<\/li>\n<\/ol>\n<\/ol>\n<\/div>\n
               <\/div>\n

              Overview<\/h2><\/span>\n

              Impact of Administration Server Failure<\/h3><\/span>\n

              * Does not affect managed servers in the domain
              \n* Do prevent you from changing domain configuration
              \n* Managed server can still be started using local copy of domain configuration files
              \n– i.e. running in Managed Server Independence (MSI) mode
              \n* Managed server sync with admin server when it becomes available<\/p>\n

              Components to Backup<\/h3><\/span>\n
              \"\"<\/a><\/h6><\/span>\n

              Various Oracle Homes<\/h3><\/span>\n
              \"\"<\/a><\/h6><\/span>\n

              Understand Backup<\/h3><\/span>\n

              * Scheduled
              \n* Need to backup at least weekly
              \n* May need different tools for different components<\/p>\n

              Understand Recovery<\/h3><\/span>\n

              * Usually unscheduled
              \n* Need to be tested at least annually
              \n* Not necessarily the reverse of backup
              \n* May need different tools<\/p>\n

              Backup and Recovery Examples<\/h3><\/span>\n

              * Redundant disks in a SCSI array
              \n* Multiple servers configured on multiple machines in a cluster with an application deployed on the cluster
              \n* The ability to cancel all pending changes to a configuration
              \n* The architecture of the Oracle 11g Database with inherent transaction logging<\/p>\n

              Describe backup and recovery strategies<\/h2><\/span>\n

              Overview of Backup Strategies<\/h3><\/span>\n

              * Use file copy utility (gzip, jar, tar) and make sure
              \n– preserver symbolic links
              \n– support long file names
              \n– preserver permission and ownership of files
              \n* Use RMAN to back up database-based metadata repositories<\/p>\n

              Backup Types<\/h3><\/span>\n

              * Online backup (aka hot backup)
              \n– Non-disruptive
              \n– Maybe insistent
              \n* Offline backup (aka cold backup)
              \n– Easy to backup
              \n– All runtime components need to be stopped
              \n* Full backup
              \n– Easy to recover
              \n– Slow to create
              \n* Incremental backup
              \n– Faster to create
              \n– Harder to recover<\/p>\n

              Backup Recommendations<\/h3><\/span>\n

              When to Perform an Offline Backup<\/h4><\/span>\n

              * After initial domain creation
              \n* Before patches or upgrades<\/p>\n

              When to Perform an Online Backup<\/h4><\/span>\n

              * Scheduled backups
              \n* After component or cluster changes
              \n* Before application deployment
              \n* Database backups:
              \n– LDAP
              \n– Persistent stores
              \n– SOA repositories<\/p>\n

              Online Backup Data Limitations<\/h3><\/span>\n

              * Should not add user when backing up LDAP
              \n* Online persistent store maybe inconsistent
              \n* HTTP session states and cookies may be lost<\/p>\n

              Directories to Restore<\/h3><\/span>\n

              * Binaries
              \n* Configurations
              \n* Logs
              \n* Data<\/p>\n

              Possible Cause of Failure<\/h3><\/span>\n

              * Data loss
              \n* User error
              \n* Malicious attack
              \n* Data corruption
              \n* Media failure
              \n* Application failure<\/p>\n

              Perform a full offline backup<\/h2><\/span>\n

              * Shutdown all processes
              \n– WLS
              \n– DB
              \n– Node Managers
              \n– Listeners
              \n– EM and emAgent
              \n– OHS
              \n– WebCache
              \n* Perform file system backups using OS tools such as tar: tar -zcvpf backup1.tar …<\/em>
              \n* Test backup by performing recovery on another computer
              \n* Store backup offsite<\/p>\n

              Create a Record of Installation<\/h3><\/span>\n

              * For each host
              \n– Names and IP addresses
              \n– OS info
              \n* For each install
              \n– Installation type,
              \n– host,
              \n– owner name and number,
              \n– group name and number,
              \n– environment profile and type of shell,
              \n– directory structure,
              \n– mount points,
              \n– full path for Oracle home,
              \n– port numbers used by the installation<\/p>\n

              Perform an Instance Home backup<\/h2><\/span>\n

              * Stop web tier
              \nopmnctl stopall
              \nopmnctl status
              \n* Backup instance home
              \ntar -zcvpf instance1.tar $ORACLE_INSTANCE
              \n* Start web tier
              \nopmnctl startall
              \nopmnctl status<\/p>\n

              Setup automatic backup of WLS configuration<\/h2><\/span>\n

              * Enable auto-backup of configuration<\/p>\n

              \"\"<\/a>\"\"<\/a><\/h6><\/span>\n

              * Check new jar files and directories<\/p>\n

              \"\"<\/a>\"\"<\/a><\/h6><\/span>\n

              Perform an offline domain recovery<\/h2><\/span>\n

              Recovery Homes<\/h3><\/span>\n

              * Stop all processes
              \n* Tar ball affected home
              \n* Untar\/restore affected home
              \n* Tar ball new home
              \n* Start all processes<\/p>\n

              Recover Managed Server<\/h3><\/span>\n

              * If software crash, node manager will restart it
              \n* If file corruption, restore and restart
              \n* If computer damaged, replace computer and restore files from cold backup and restart<\/p>\n

              Recover Admin Server Configuration<\/h3><\/span>\n

              * Admin Server not needed for normal operation of managed server as long as MSI mode is enabled for managed server<\/p>\n

              \"\"<\/a>\"\"<\/a><\/h6><\/span>\n

              Recover Cluster<\/h3><\/span>\n

              * Undo changes from Change Center
              \n* Reenter correct configurations
              \n* Use configuration archives
              \n* Recover configuration
              \n* Recover dommain
              \n* Recover WLS
              \n* Do a full recovery<\/p>\n

              Restore OPMN-Managed Components to a New Computer<\/h3><\/span>\n

              * Recover files
              \n* Update registration of Oracle Instance with admin server using opmnctl updateinstanceregistration -adminHost admin_server_host<\/em>
              \n* Update registration of components with admin server using opmnctl updatecomponentregistration -Host new_host -Port nonSSLPort
              \n -componentName ovd1 -componentType OVD<\/em>
              \n* Edit targets.xml file for Fusion Middleware Control
              \n* Edit emd file for EM Agent
              \n* Restart EM Agent<\/p>\n

              Start the admin server on a backup computer<\/h2><\/span>\n

              * Install WLS on backup computer
              \n* Copy application files (?) to the backup computer
              \n* Copy configuration files to the backup computer
              \n* Restart admin server on backup computer (old admin server must be shutdown)<\/p>\n

              References<\/h2><\/span>\n

              * Introducing Backup and Recovery<\/a>
              \n*               Recovering Your Environment<\/a>
              \n[mv_include id=’3268′]<\/p>\n","protected":false},"excerpt":{"rendered":"

              Overview Impact of Administration Server Failure * Does not affect managed servers in the domain * Do prevent you from changing domain configuration * Managed server can still be started using local copy of domain configuration files – i.e. running … Continue reading →<\/span><\/a><\/p>\n","protected":false},"author":2,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"_exactmetrics_skip_tracking":false,"_exactmetrics_sitenote_active":false,"_exactmetrics_sitenote_note":"","_exactmetrics_sitenote_category":0,"jetpack_post_was_ever_published":false,"_jetpack_newsletter_access":"","_jetpack_dont_email_post_to_subs":false,"_jetpack_newsletter_tier_id":0,"_jetpack_memberships_contains_paywalled_content":false,"_jetpack_memberships_contains_paid_content":false,"footnotes":"","jetpack_publicize_message":"","jetpack_publicize_feature_enabled":true,"jetpack_social_post_already_shared":false,"jetpack_social_options":{"image_generator_settings":{"template":"highway","default_image_id":0,"font":"","enabled":false},"version":2}},"categories":[107,104],"tags":[588,158,145,159,590],"class_list":["post-5065","post","type-post","status-publish","format-standard","hentry","category-certification","category-weblogic11g","tag-11g","tag-backup","tag-cert","tag-recovery","tag-weblogic"],"jetpack_publicize_connections":[],"jetpack_featured_media_url":"","jetpack_sharing_enabled":true,"jetpack_shortlink":"https:\/\/wp.me\/p8cRUO-1jH","_links":{"self":[{"href":"https:\/\/jianmingli.com\/wp\/index.php?rest_route=\/wp\/v2\/posts\/5065","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/jianmingli.com\/wp\/index.php?rest_route=\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/jianmingli.com\/wp\/index.php?rest_route=\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/jianmingli.com\/wp\/index.php?rest_route=\/wp\/v2\/users\/2"}],"replies":[{"embeddable":true,"href":"https:\/\/jianmingli.com\/wp\/index.php?rest_route=%2Fwp%2Fv2%2Fcomments&post=5065"}],"version-history":[{"count":6,"href":"https:\/\/jianmingli.com\/wp\/index.php?rest_route=\/wp\/v2\/posts\/5065\/revisions"}],"predecessor-version":[{"id":5713,"href":"https:\/\/jianmingli.com\/wp\/index.php?rest_route=\/wp\/v2\/posts\/5065\/revisions\/5713"}],"wp:attachment":[{"href":"https:\/\/jianmingli.com\/wp\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=5065"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/jianmingli.com\/wp\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=5065"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/jianmingli.com\/wp\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=5065"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}