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Article ID: 131081, created on Jun 29, 2017, last review on Jun 29, 2017

  • Applies to:
  • Operations Automation 7.1


After installing OA hotfixes, Control Panel becomes unavailable, UI service is stopped on the corresponding UI node:

# service pau status
pau is stopped

/var/log/pa/console.log on the UI node contains messages indicating an Out-of-memory condition:

170626 06:45:55 WARN  [org.jboss.modules] (Weld Thread Pool -- 2) Failed to define class com.plesk.p2.cp.core.aps.modules.screens.ApplicationPropsMult$3 in Module "deployment.pui-war.war:main" from Service Module Loader: java.lang.OutOfMemoryError: Metaspace
        at java.lang.ClassLoader.defineClass1(Native Method) [rt.jar:1.8.0_112]
        at java.lang.ClassLoader.defineClass( [rt.jar:1.8.0_112]
        at org.jboss.modules.ModuleClassLoader.doDefineOrLoadClass( [jboss-modules.jar:1.5.2.Final]
        at org.jboss.modules.ModuleClassLoader.defineClass( [jboss-modules.jar:1.5.2.Final]
        at org.jboss.modules.ModuleClassLoader.loadClassLocal( [jboss-modules.jar:1.5.2.Final]


The behavior is acknowledged as POA-111861 (Java metaspace OOM on PUI redeployment)


Start the service back:

# service pau start

Log in to the Control Panel and run the pending Reloading PUI application on host task.

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