ThingWorx Platform 日志文件中出现“java.lang.OutOfMemoryError”

• 从外部数据库检索大量数据时出错
• 从外部数据库检索大量数据时出现Java 堆空间错误
• ThingWorx 正在启动，但一段时间后它冻结了
• 之前可以通信的 ThingWorx 服务器突然无法通信
• 启动 ThingWorx 实例后，可以通过 https 进行通信，但一段时间后登录弹出窗口不会出现
• ThingWorx 平台的内存利用率处于临界状态
• ThingWorx 因内存不足错误而无法启动
• ThingWorx 在高可用性配置中意外关闭
• ThingWorx 需要一些时间来加载完整的混搭，导致浏览器页面无响应
• Apache Tomcat 启动失败并显示错误消息：

java.util.concurrent.ExecutionException: java.lang.OutOfMemoryError: Java heap space

• ThingWorx 平台启动失败，出现以下一个或多个错误：
  • <ThingworxStorage>\logs\ErrorLog.log

java.lang.OutOfMemoryError: Java heap space

• <ThingworxStorage>\logs\ApplicationLog.log

Commons Daemon procrun stdout initialized
Error occurred during initialization of VM
Could not reserve enough space for <xxxxx>KB object heap
java.util.concurrent.ExecutionException: java.lang.OutOfMemoryError: Metaspace

• <tomcat_home>\logs\thingworx-foundation-stderr.<日期>.log

Exception in thread "WSExecutionProcessor-190" java.lang.OutOfMemoryError: Java heap space
Exception in thread "xxx" 
Exception in thread "http-nio-8080-Acceptor" 
Exception in thread "WebSocket background processing" 
Exception in thread "Multipart message gc timer" 
Exception in thread "pool-20-thread-7" 
Exception in thread "Timer-x" 
Exception in thread "mssql-jdbc-shared-timer-core-565" 
Exception in thread "Timer-3" 
Exception in thread "C3P0PooledConnectionPoolManager[identityToken->2u2o5xav11gbysxf40298|7cac04c3]-HelperThread-#5" 
Exception in thread "TWEventProcessor-8" 
org.apache.coyote.AbstractProtocol$ConnectionHandler process
Critical: Failed to fully process the request
java.lang.OutOfMemoryError: Java heap space

• <tomcat_home>\logs\catalina.out

SEVERE [http-nio-8443-ClientPoller-1] org.apache.tomcat.util.net.NioEndpoint$Poller.run
 java.lang.OutOfMemoryError: unable to create new native thread
    at java.lang.Thread.start0(Native Method)
    at java.lang.Thread.start(Thread.java:714)
    at java.util.concurrent.ThreadPoolExecutor.addWorker(ThreadPoolExecutor.java:950)

• <tomcat_home>\logs\catalina.<日期>.log

SEVERE [ContainerBackgroundProcessor[StandardEngine[Catalina]]] org.apache.catalina.startup.HostConfig.deployWARs Error waiting for multi-thread deployment of WAR files to complete
 java.lang.InterruptedException
    at java.util.concurrent.FutureTask.awaitDone(Unknown Source)
    at java.util.concurrent.FutureTask.get(Unknown Source)
    at org.apache.catalina.startup.HostConfig.deployWARs(HostConfig.java:733)...

• 数据导入失败，并记录以下错误
  • <ThingworxStorage>\logs\ApplicationLog.log

Error importing: error, Java heap space

• ThingWorx 服务执行失败或 ThingWorx 运行缓慢或无法访问，并记录以下错误：
  • <ThingworxStorage>\logs\ScriptErrorLog.log

[L: ERROR] [O: S.c.q.l.c.Logger] [I: ThingName] [U: <username>] [S: ] [P: ] [T: http-nio-8080-exec-23] Error in: ThingName.ServiceName javascript service. Message ::Java heap space
[L: ERROR] [O: S.c.q.l.c.Logger] [I: ThingName] [U: <username>] [S: ] [P: ] [T: http-nio-8080-exec-27] Error in: ThingName.ServiceName javascript service. Message ::Java heap space: failed reallocation of scalar replaced objects

• <ThingworxStorage>\logs\ScriptLog.log

[L: ERROR] [O: S.c.t.d.e.DSLProcessor] [I: ] [U: <username>] [S: ] [T: http-nio-8443-exec-<Thread Number>] Execution error in service script [<Entity> <Service>] : Wrapped java.lang.Exception: Java heap space Cause: Java heap space

• 所有后续服务电话均显示

[L: ERROR] [O: S.c.t.d.e.DSLProcessor] [I: ] [U: <username>] [S: ] [T: http-nio-8443-exec-<Thread Number>] Execution error in service script [<Entity> <Service>] : Wrapped com.thingworx.common.exceptions.InvalidRequestException: Execution error in service script [<Entity> <Service>] : Wrapped java.lang.Exception: Java heap space Cause: Java heap space Cause: Execution error in service script [<Entity> <Service>] : Wrapped java.lang.Exception: Java heap space Cause: Java heap space