Tomcat Memory Leak Prevention is Throwing Severe Warnings During Shutdown
(Doc ID 1343019.1)
Last updated on FEBRUARY 28, 2018
Applies to:
Oracle Documaker - Version 11.4 and laterInformation in this document applies to any platform.
Symptoms
When stopping Tomcat 6.0.24 or later running iDocumaker, the following error occurs.
SEVERE: The web application [/skywireccm] registered the JBDC driver [org.hsqldb.jdbcDriver] but failed to unregister it when the web application was stopped. To prevent a memory leak, the JDBC Driver has been forcibly unregistered.
SEVERE: The web application [/skywireccm] appears to have started a thread named [Timer-2] but has failed to stop it. This is very likely to create a memory leak.
...
SEVERE: The web application [/skywireccm] created a ThreadLocal with key of type [java.lang.ThreadLocal] (value [java.lang.ThreadLocal@801b21]) and a value of type [org.apache.xalan.transformer.TransformerIdentityImpl] (value [org.apache.xalan.transformer.TransformerIdentityImpl@7518e9]) but failed to remove it when the web application was stopped. This is very likely to create a memory leak.
SEVERE: The web application [/skywireccm] appears to have started a thread named [Timer-2] but has failed to stop it. This is very likely to create a memory leak.
...
SEVERE: The web application [/skywireccm] created a ThreadLocal with key of type [java.lang.ThreadLocal] (value [java.lang.ThreadLocal@801b21]) and a value of type [org.apache.xalan.transformer.TransformerIdentityImpl] (value [org.apache.xalan.transformer.TransformerIdentityImpl@7518e9]) but failed to remove it when the web application was stopped. This is very likely to create a memory leak.
Cause
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