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Full Discussion: need help about jvm
Top Forums Web Development need help about jvm Post 302324276 by cbkihong on Wednesday 10th of June 2009 11:23:33 AM
Old 06-10-2009
Did you read this?

Java SE HotSpot at a Glance

and other documents on java.sun.com about garbage collection?
 

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asadmin-create-jvm-options(1AS) 				   User Commands				   asadmin-create-jvm-options(1AS)

NAME
asadmin-create-jvm-options, create-jvm-options - creates the JVM options from the Java configuration or profiler elements SYNOPSIS
create-jvm-options --user admin_user [--password admin_password][--host localhost] [--port 4848] [--secure|-s] [--passwordfile filename] [--terse=false] [--echo=false] [--interactive=true] [--profiler=false ](jvm_option_name=jvm_option_value)[:jvm_option_name=jvm_option_value]* Creates the JVM options in the Java configuration or Profiler elements of the domain.xml file. You can enter more than one JVM option sepa- rated by a colon (:) . If the JVM option starts with a dash (-) then use two dashes (--) before the operand to distinguish that JVM option is an operand and not an option. JVM options are used to record the settings needed to get a particular profiler going. You must restart the server for the newly created JVM options to take affect. Use the start-domain command to restart the server domain. OPTIONS
--user authorized domain application server administrative username. --password password to administer the domain application server. --host machine name where the domain application server is running. --port port number of the domain application server listening for administration requests. --secure if true, uses SSL/TLS to communicate with the domain application server. --passwordfile file containing the domain application server password. --terse indicates that any output data must be very concise, typically avoiding human-friendly sentences and favoring well- formatted data for consumption by a script. Default is false. --echo setting to true will echo the command line statement on the standard output. Default is false. --interactive if set to true (default), only the required password options are prompted. --profiler indicates if the JVM options is for the profiler. Profiler must exist for this option to be true. OPERANDS
jvm_option_name=jvm_optithevleft side of the equal sign (=) is the JVM option name. The right side of the equal sign (=) is the jvm_option_value. Additionally, you can use ":" as a delimiter for more than one jvm-option. If the jvm-option contains a ":", use the escape character to offset the ":" delimiter. Example 1: Using create-jvm-options asadmin> create-jvm-options --user admin --password adminadmin --host localhost --port 4848 --profiler=false --DDebug=true:"-Xmx256m":" -Dcom.sun.aas.imqBin"="/export/as7se/imq/bin" Command create-jvm-options executed successfully Where the JVM options are created. The double dash (--) is used between --profiler options and the operand because - indicated the end of the options and the following text is the operand. The double dash (--) is necessary here since there are single dashes (i.e., --DDebug) in the operand. To distinguish between the options and the operand, the double dash (--) is used. EXIT STATUS
0 command executed successfully 1 error in executing the command asadmin-delete-jvm-options(1AS) J2EE 1.4 SDK March 2004 asadmin-create-jvm-options(1AS)
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