From : http://docs.oracle.com/cd/E23943_01/doc.1111/e14142/jdk7.htm, with JDK 7, you can use the newly JMC(Java Misson Control) which introduced since JDK 7u40, the formal JRMC – JRockit Mission Control, now with JDK supoort.
WebLogic Server does not ship with JDK 7. This appendix describes the steps you need to perform to use WebLogic Server with JDK 7. It also describes issues that you may encounter when using WebLogic Server with JDK 7.
Prior to installing JDK 7 for use with WebLogic Server, review the following issues that you may encounter when using JDK 7:
In some cases, the new JVM requires more PermGen space, which can cause PermGen errors. If this occurs, use one of the following two options to resolve the issue:
If you are using the
javacommand to start WebLogic Server, include the following option in the command:
If you are using
startWebLogic.cmd(Windows) to start WebLogic Server, prior to issuing the command, set the
MEM_ARGSenvironment variable as follows:
USER_MEM_ARGS="-Xms32m -Xmx200m -XX:MaxPermSize=350m"
set USER_MEM_ARGS=-Xms32m -Xmx200m -XX:MaxPermSize=350m
In some cases, the new compiler generates larger byte code. It is possible that a large method may exceed the 64KB limit per method. In this situation, you may need to refactor the method.
Classes may have been removed that are from the internal package
sun.*, or that have been marked as deprecated in a previous version of the JVM. If an application uses these removed methods, a
ClassNotFoundexception will occur.
JDBC 4.1 methods are not currently supported in WebLogic Server with JDK 7. Calls to these methods will result in an
SQLExceptionindicating that the method is not supported.
Before installing WebLogic Server, perform the following steps:
- Download the appropriate JDK 7 for your platform from the following URL:
Install the JDK.
JAVA_HOMEto point to the installed JDK 7.
PATHto point to
When installing WebLogic Server: select a Custom installation. For the JDK selection, deselect the bundled JDK entries and under the Local JDK section browse and select the JAVA_HOME directory.
After installing WebLogic Server, copy the following files from
WL_HOMEis the WebLogic Server installation home directory:
`javax.annotation_220.127.116.11_1-0.jar` `javax.xml.bind_2.1.1.jar` `javax.xml.ws_2.1.1.jar`