We often come across cases where we require to modify the heap size according to our applications\u2019s needs eg java.lang.OutOfMemoryError
\nWhenever we want to change the Heap size in WebLogic server (AdminServer or managed servers), we can customize setDomainEnv.sh in $DOMAIN_HOME\/bin with required memory arguments.
\nBelow are the two scenarios:<\/p>\n
Scenario 1:<\/strong> Scenario 2:<\/strong> Note that we are using Switch case programming concept in defining different memory arguments for different servers in this domain. We can edit this switch case as per our requirements. case “${SERVER_NAME}” in if [ “${USER_MEM_ARGS}” != “” ] ; then This change will be reflected when the Servers are bounced . The new heap size change can be confirmed from the Admin console of the domain (Click on servers -> server_name -> monitoring -> performance) or from server_name.log or server_name.out in $DOMAIN_HOME\/servers\/Server_Name\/logs.<\/p>\n","protected":false},"excerpt":{"rendered":" We often come across cases where we require to modify the heap size according to our applications\u2019s needs eg java.lang.OutOfMemoryError […]<\/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 center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""},"tablet":{"background-color":"","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""},"mobile":{"background-color":"","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""}},"ast-content-background-meta":{"desktop":{"background-color":"var(--ast-global-color-4)","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""},"tablet":{"background-color":"var(--ast-global-color-4)","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""},"mobile":{"background-color":"var(--ast-global-color-4)","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""}},"footnotes":""},"categories":[217],"tags":[379,378,479],"class_list":["post-5142","post","type-post","status-publish","format-standard","hentry","category-weblogic","tag-domain","tag-heap","tag-weblogic"],"yoast_head":"\n
\nWe need to change the memory arguments to a value same for all servers in a Domain. Suppose we want to keep Xmx 1024 M and Xms 1024 M for all server in an Domain (Admin and all managed servers).
\nWe will edit setDomainEnv.sh in $DOMAIN_HOME\/bin with our required values of Xmx and Xms.
\nSearch for line \u201c# IF USER_MEM_ARGS the environment variable\u201d in setDomainEnv.sh
\nWe will add line
\nUSER_MEM_ARGS=”-Xms1024m -Xmx1024m”<\/em>
\n export USER_MEM_ARGS<\/em>
\nbelow line \u201c # IF USER_MEM_ARGS the environment variable is set, use it to override ALL MEM_ARGS values\u201d
\nand above line \u201c if [ “${USER_MEM_ARGS}” != “” ] ; then\u201d
\nExample :
\n# IF USER_MEM_ARGS the environment variable is set, use it to override ALL MEM_ARGS values
\nUSER_MEM_ARGS=”-Xms1024m -Xmx1024m”<\/em>
\n export USER_MEM_ARGS<\/em>
\nif [ “${USER_MEM_ARGS}” != “” ] ; then
\nMEM_ARGS=”${USER_MEM_ARGS}”
\nexport MEM_ARGS
\nfi<\/p>\n
\nWe need to change the memory arguments to values different for all servers in a Domain. Suppose we want to keep Xmx 512 M and Xms 512 M for Admin server and Xmx 1g and Xms 1g for ebsag_server and oam_server1 managed servers in a Domain
\nWe will edit setDomainEnv.sh in $DOMAIN_HOME\/bin with our required values of Xmx and Xms.
\nSearch for line \u201c# IF USER_MEM_ARGS the environment variable\u201d in setDomainEnv.sh
\nWe will add lines
\ncase “${SERVER_NAME}” in<\/em>
\n “AdminServer”) USER_MEM_ARGS=”-Xms512m -Xmx512m” ;;<\/em>
\n “oam_server1″) USER_MEM_ARGS=”-Xms1g -Xmx1g” ;;<\/em>
\n “ebsag_server”) USER_MEM_ARGS=”-Xms1g -Xmx1g” ;; *)<\/em>
\n echo “Unknown Server Detected!!. Memory set as Xms1g Xmx2g.”;<\/em>
\n USER_MEM_ARGS=”-Xms1g -Xmx2g” ;;<\/em>
\n esac<\/em>
\n USER_MEM_ARGS=”${USER_MEM_ARGS} -d64 -XX:PermSize=256m -XX:MaxPermSize=512m -Djava.awtheadless=true -Djbo.ampool.maxpoolsize=600000″<\/em>
\nBelow line \u201c # IF USER_MEM_ARGS the environment variable is set, use it to override ALL MEM_ARGS values\u201d and above line \u201c if [ “${USER_MEM_ARGS}” != “” ] ; then\u201d<\/p>\n
\nExample :
\n# IF USER_MEM_ARGS the environment variable is set, use it to override ALL MEM_ARGS values<\/p>\n
\n“AdminServer”) USER_MEM_ARGS=”-Xms512m -Xmx512m” ;;
\n“oam_server1″) USER_MEM_ARGS=”-Xms1g -Xmx1g” ;;
\n“ebsag_server”) USER_MEM_ARGS=”-Xms1g -Xmx1g” ;; *)
\necho “Unknown Server Detected!!. Memory set as Xms1g Xmx2g.”;
\nUSER_MEM_ARGS=”-Xms1g -Xmx2g” ;;
\nesac
\nUSER_MEM_ARGS=”${USER_MEM_ARGS} -d64 -XX:PermSize=256m -XX:MaxPermSize=512m -Djava.awtheadless=true -Djbo.ampool.maxpoolsize=600000″<\/p>\n
\nMEM_ARGS=”${USER_MEM_ARGS}”
\nexport MEM_ARGS
\nfi<\/p>\n