No Class Def Found Error-log4j
An exception was thrown when one of the SOAP calls was executed after updating to Pega 7.1.9 from Pega 7.1.7. This issue occurred when an exception was thrown from a remote service.
13:03:16,774 SEVERE [com.pega.pegarules.internal.bootstrap.PRBootstrap] (http-/0.0.0.0:8480-7) Problem during method invocation (invokeEngine): java.lang.NoClassDefFoundError: com/pega/apache/log4j/spi/ThrowableInformation
Steps to Reproduce
1. Install Pega 7.1.7.
2. Deploy applications.
3. Update to Pega 7.1.9.
3. Invoke a SOAP call.
A defect or configuration issue in the operating environment. The needed class is unable to load from the database sporadically.
Add the following setting to prconfig.xml to pre-load the offending class:
<env name="initialization/preloadengineclasses" value="com.pega.apache.log4j.spi.ThrowableInformation" />
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