update jvm

dbsyncer-web/src/main/assembly/bin/startup.bat

@@ -33,7 +33,7 @@ set SERVER_OPTS=%SERVER_OPTS% -agentpath:%ENCRYPT_FILE%
 set SERVER_OPTS=%SERVER_OPTS% -Djava.ext.dirs="%JAVA_HOME%\jre\lib\ext;%DBS_HOME%lib"
 set SERVER_OPTS=%SERVER_OPTS% -Dspring.config.location=%DBS_HOME%conf\application.properties
 set SERVER_OPTS=%SERVER_OPTS% -Dfile.encoding=UTF-8 -Duser.dir=%DBS_HOME%
-set SERVER_OPTS=%SERVER_OPTS% -XX:+UseStringCache -XX:+UseConcMarkSweepGC -XX:+UseParNewGC -XX:ParallelGCThreads=4 -XX:+CMSClassUnloadingEnabled -XX:+DisableExplicitGC
+set SERVER_OPTS=%SERVER_OPTS% -XX:+UseConcMarkSweepGC -XX:+UseParNewGC -XX:ParallelGCThreads=4 -XX:+CMSClassUnloadingEnabled -XX:+DisableExplicitGC
 set SERVER_OPTS=%SERVER_OPTS% -XX:+UseCMSInitiatingOccupancyOnly -XX:CMSInitiatingOccupancyFraction=68 -verbose:gc -XX:+PrintGCDetails -XX:+PrintGCDateStamps
 set SERVER_OPTS=%SERVER_OPTS% -XX:+HeapDumpOnOutOfMemoryError -XX:HeapDumpPath=%DBS_HOME%logs -XX:ErrorFile=%DBS_HOME%logs\hs_err.log