{"id":190,"date":"2007-10-19T18:25:18","date_gmt":"2007-10-19T22:25:18","guid":{"rendered":"http:\/\/onlineappsdba.com\/index.php\/2007\/10\/19\/r12-instance-home-overview\/"},"modified":"2007-10-20T04:49:50","modified_gmt":"2007-10-20T08:49:50","slug":"r12-instance-home-overview","status":"publish","type":"post","link":"https:\/\/onlineappsdba.com\/index.php\/2007\/10\/19\/r12-instance-home-overview\/","title":{"rendered":"R12 Instance Home Overview"},"content":{"rendered":"<p>Oracle Applications\/E-Business Suite\u00a0<strong>Release 12<\/strong> introduces a new concept of a top-level directory for an Applications Instance which is known as <strong>Instance Home<\/strong> and is denoted the environment variable <strong>$INST_TOP<\/strong>.\u00a0<br \/>\n\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0 Instance Home contains all the <strong>config<\/strong> files, <strong>log<\/strong> files, <strong>SSL certificates<\/strong> etc.<\/p>\n<p><strong>Advantages of new INSTANCE HOME<\/strong><\/p>\n<li>The additional Instance Home makes the middle tier more easy to manage and organised since the data is kept separate from the config files. The Instance Home also has the <strong>ability to share the Applications and Technology stack code across multiple instances<\/strong>.<\/li>\n<li>Another advantage of the Instance Home is that the Autoconfig no longer writes anything to the APPL_TOP and ORACLE_HOME directories, everything is now written in the INST_TOP as a result APPL_TOP and ORACLE_HOME can also be made read only file system if required . Earlier say the adpatch used to write the log file in APPL_TOP\/admin directory but with the new model the APPL_CONFIG_HOME\/admin is used.<\/li>\n<li>To create a new instance that shares an existing middle-tier, just create a new instance_top with proper config files and NFS Mount the middle tier in the server.<strong>The basic structure of the Instance Home is<\/strong>:$APPS_BASE\/inst\/apps\/$CONTEXT_NAME\u00a0 or also defined by environment variable $INST_TOP, where APPS_BASE (which does not have or need a corresponding environment variable) is the top level of the Applications installation and $CONTEXT_NAME\u00a0 is the highest level at which the Applications context exists (format $SID_$hostname).\n<p><strong>Instance Home Directory Structure<br \/>\n<\/strong><\/li>\n<li>$INST_TOP\/admin\/scripts ($ADMIN_SCRIPTS_HOME): All AD scripts are located here<\/li>\n<li>$INST_TOP\/appl ($APPL_CONFIG_HOME)\u00a0: For standalone envs, this is set to $APPL_TOP<br \/>\n$INST_TOP\/appl\/fnd\/12.0.0\/secure FND_SECURE: The dbc file is located here<br \/>\n$INST_TOP\/appl\/admin All the env config files are located here<\/li>\n<li>$INST_TOP\/certs SSL Certificates go here<\/li>\n<li>$INST_TOP\/logs LOG_HOME: Central log file location. All log files are placed here (except adconfig)<br \/>\n$INST_TOP\/logs\/ora ($ORA_CONFIG_HOME)<br \/>\n$INST_TOP\/logs\/ora\/10.1.2 \u2018C\u2019 Oracle home config, Contains tnsnames and forms listener servlet config files<br \/>\n$INST_TOP\/logs\/ora\/10.1.3 Apache &amp; OC4J config home, Apache, OC4J and opmn. This is the \u2018Java\u2019 oracle home configuration for OPMN, Apache and OC4J<\/li>\n<li>$INST_TOP\/pids\u00a0 Apache\/Forms server PID files are located here<\/li>\n<li>$INST_TOP\/portal Apache\u2019s <strong>DocumentRoot<\/strong> folder<\/li>\n","protected":false},"excerpt":{"rendered":"<p>Oracle Applications\/E-Business Suite\u00a0Release 12 introduces a new concept of a top-level directory for an Applications Instance which is known as [&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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center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""}},"footnotes":""},"categories":[35,120],"tags":[121,460],"class_list":["post-190","post","type-post","status-publish","format-standard","hentry","category-r12","category-r12-new-features","tag-application_home","tag-r12"],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v25.8 - https:\/\/yoast.com\/wordpress\/plugins\/seo\/ -->\n<title>R12 Instance Home Overview -<\/title>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" href=\"https:\/\/onlineappsdba.com\/index.php\/2007\/10\/19\/r12-instance-home-overview\/\" \/>\n<meta property=\"og:locale\" content=\"en_US\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"R12 Instance Home Overview -\" 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