{"id":529,"date":"2008-06-25T16:02:28","date_gmt":"2008-06-25T20:02:28","guid":{"rendered":"http:\/\/onlineappsdba.com\/index.php\/2008\/06\/25\/application-server-disaster-recovery-solution-as-guard-things-you-should-know\/"},"modified":"2008-06-25T16:02:28","modified_gmt":"2008-06-25T20:02:28","slug":"application-server-disaster-recovery-solution-as-guard-things-you-should-know","status":"publish","type":"post","link":"https:\/\/onlineappsdba.com\/index.php\/2008\/06\/25\/application-server-disaster-recovery-solution-as-guard-things-you-should-know\/","title":{"rendered":"Application Server Disaster Recovery Solution : AS Guard &#8211; Things You should Know"},"content":{"rendered":"<p><strong>ASGuard<\/strong> which stands for <strong>Application Server Guard<\/strong>is Disaster Recovery Solution for Oracle Application Server\/Fusion Middleware.<br \/>\n\u00a0 AS Guard in background uses <strong>Datagaurd<\/strong> for database (automatically creates standby database) and for middle tier configuration files it uses <strong>OracleAS backup and recovery tool<\/strong>.<\/p>\n<p>If you are implementing Oracle AS Guard,\u00a0<strong><u>key points You should be aware of<\/u><\/strong><\/p>\n<p><strong>1.<\/strong> If there are multiple ORACLE_HOME installed in same machine which are part of Oracle Application Server\/ Fusion Middle Ware (like Middle Tier, Infrastructure Tier) then they should use <strong>single global inventory. <\/strong>(To Know more about Inventory <a target=\"_blank\" href=\"https:\/\/onlineappsdba.com\/index.php\/2006\/12\/14\/orainventory-in-oracle\/\"><strong>Click Here<\/strong><\/a>)<\/p>\n<p><strong>2.<\/strong> If multiple ORACLE_HOMES are installed on one machine (<strong>owned by different users<\/strong>) then owner of one ORACLE_HOME should be able read $ORACLE_HOME\/dsa\/dsa.conf file of other user.<\/p>\n<p>\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0 Assume user <strong>infa<\/strong> is\u00a0owning <strong>infrastructure tier<\/strong> under\u00a0ORACLE_HOME <strong>\/oracle\/infra<\/strong> and on same machine user <strong>iasmid<\/strong> is\u00a0owning\u00a0<strong>middle tier<\/strong> under ORACLE_HOME <strong>\/oracle\/iasmid<\/strong>then infra &amp; iasmid should be able to read <strong>$OH\/dsa\/dsa.conf<\/strong> file in each other&#8217;s oracle_home<\/p>\n<p><strong>3.<\/strong>ASGuard should have minimum 10.1.2.2.0 Version; To find out ASGuard\/DSA version use ( <strong><font color=\"#ff0000\">$ORACLE_HOME\/OPatch\/opatch lsinventory -detail | grep Guard <\/font><\/strong>)<\/p>\n<p>You should see output like<\/p>\n<p><strong>Oracle Application Server Guard Client\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0 10.1.2.2.0<br \/>\nOracle Application Server Guard Common\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a010.1.2.2.0<br \/>\nOracle Application Server Guard Server\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a010.1.2.2.0<br \/>\nOracle Application Server Guard\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0 10.1.2.2.0<\/strong><\/p>\n<p><strong>4.<\/strong>It is recommended to use same superuser (ias_admin) password for all instances part of ASG (Application Server Guard)<br \/>\n<strong>5.<\/strong> If oracle application server is installed on multiple machines (middle tier on one machine, infra tier on another) then <strong>DSA\/ASG port<\/strong>(defined in $OH\/dsa\/<strong>dsa.conf<\/strong>) should be open across firewall.<br \/>\n<strong><u>.\u00a0<\/u><\/strong><\/p>\n<p><strong><u>Things good to know<br \/>\n<\/u>1.<\/strong>ASG (Application Server Guard) and DSA are used interchangeably<br \/>\n<strong>2.<\/strong>To Start ASGuard component use <strong>opmnctl startproc ias-component=DSA<\/strong><br \/>\n<strong>3.<\/strong>Configuraration file for ASG\/DSA is $ORACLE_HOME\/dsa\/dsa.conf<br \/>\n<strong>4.<\/strong>Log file for ASG\/DSA are in $ORACLE_HOME\/dsa\/log<br \/>\n<strong>5.<\/strong> You can enable extra logging by adding &#8220;<strong>trace_flags=all<\/strong>&#8221; in dsa.conf or\u00a0 &#8220;<strong>set trace on &lt;traceflags&gt;<\/strong>&#8221; from ASG command line tool.<br \/>\n<strong>6.<\/strong>If you wish to apply any oracle patch (patch which updates database; like middle tier patch) or CPU patch on ORACLE_HOME with ASGuard, to apply patch in standby site <strong>break<\/strong> primary-standby relationship, apply patch on primary &amp; standby site and <strong>reinstantiate<\/strong> standby site\u00a0with primary site.<br \/>\n<strong>7.<\/strong> If your infrastructure database was created using <strong>RepCA<\/strong>(Repository Creation Assistant) then you can install standalone ASGuard (DSA) in that home from companion CD.<\/p>\n<p>.<\/p>\n<p><strong><u>Related<br \/>\n<\/u><\/strong><a target=\"_blank\" href=\"http:\/\/download.oracle.com\/docs\/cd\/B14099_19\/core.1012\/b14003\/part_dr.htm\">Oracle&#8217;s AS Guard Documentation<\/a><\/p>\n","protected":false},"excerpt":{"rendered":"<p>ASGuard which stands for Application Server Guardis Disaster Recovery Solution for Oracle Application Server\/Fusion Middleware. \u00a0 AS Guard in background [&hellip;]<\/p>\n","protected":false},"author":115,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"site-sidebar-layout":"default","site-content-layout":"","ast-site-content-layout":"default","site-content-style":"default","site-sidebar-style":"default","ast-global-header-display":"","ast-banner-title-visibility":"","ast-main-header-display":"","ast-hfb-above-header-display":"","ast-hfb-below-header-display":"","ast-hfb-mobile-header-display":"","site-post-title":"","ast-breadcrumbs-content":"","ast-featured-img":"","footer-sml-layout":"","theme-transparent-header-meta":"","adv-header-id-meta":"","stick-header-meta":"","header-above-stick-meta":"","header-main-stick-meta":"","header-below-stick-meta":"","astra-migrate-meta-layouts":"default","ast-page-background-enabled":"default","ast-page-background-meta":{"desktop":{"background-color":"var(--ast-global-color-5)","background-image":"","background-repeat":"repeat","background-position":"center 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