Removing Java from the Mac is a three step effort involving manually deleting various java related plug-ins and files found throughout macOS / Mac OS / Mac OS X, both in the system /Library folder and in the users ~/Library folder. You should always back up your Mac before removing any item found within a system directory. Mar 9, 2017 - Troubleshooting Java memory problems can be tricky, but the right approach. Heap dumps can be collected using jcmd, jmap, JConsole and the. 06 14:48:54 PST 2017 File: D: tests java_pid19908.hprof File size: 11.3 MB. If you get the following error message when using jmap to get a Java heap dump: # $JAVA_HOME/bin/jmap -dump:file=/tmp/dump.hprof PID Error occurred during initialization of VM Could not reserve enough space for object heap Could not create the Java virtual machine. It’s due to the default heap size used in the server VM so you just need to set some values for the Xmx and Xms parameters. With jmap you also need to prefix it with a -J meaning that this parameter will be transferred to the underlying JVM: # $JAVA_HOME/bin/jmap -F -J-Xms16m -J-Xmx128m -dump:file=/tmp/dump.hprof 24613 Attaching to process ID 24613, please wait. Debugger attached successfully. Server compiler detected. JVM version is 20.4-b02 Dumping heap to /tmp/dump.hprof. Finding object size using Printezis bits and skipping over. Finding object size using Printezis bits and skipping over. Heap dump file created If you create multiple files, it makes sense to have a timestamp in the filename e.g..
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АвторНапишите что-нибудь о себе. Не надо ничего особенного, просто общие данные. Архивы
Март 2019
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