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Support Article

Unable to login into the system

SA-7518

Summary



After truncating the Pega cache tables and deleting the temporary directory, end user cannot get to the login page. 

Error Messages



SystemOut.log:

[3/14/15 10:03:45:146 EDT] 00000019 ThreadMonitor W   WSVR0605W: Thread "WorkManager.PRPCWorkManager : 6" (0000002a) has been active for 632032 milliseconds and may be hung.  There is/are 1 thread(s) in total in the server that may be hung.
    at com.pega.pegarules.exec.internal.util.PRClassLoaderUtilsImpl.injectKnownClass(PRClassLoaderUtilsImpl.java)
    at com.pega.pegarules.generation.internal.compiler.ClassloaderInjectingCompilationSaver.injectClasses(ClassloaderInjectingCompilationSaver.java)
    at com.pega.pegarules.generation.internal.compiler.QueuedCompilationSaver.saveClasses(QueuedCompilationSaver.java:70)
    at com.pega.pegarules.generation.internal.compiler.PRCompilerUtil.notifyCompilationListeners(PRCompilerUtil.java)
    at com.pega.pegarules.generation.internal.compiler.PRCompilerEclipse._compile_privact(PRCompilerEclipse.java)
    at com.pega.pegarules.generation.internal.compiler.PRCompilerEclipse.compile(PRCompilerEclipse.java)
    at com.pega.pegarules.generation.internal.compiler.PRCompilerEclipse.compile(PRCompilerEclipse.java:467)
    at com.pega.pegarules.generation.internal.compiler.PRCompilerEclipse.compile(PRCompilerEclipse.java)
    at com.pega.pegarules.generation.internal.compiler.PRCompilerEclipse.compile(PRCompilerEclipse.java:325)


Steps to Reproduce



Sporadic, not reproducible every time.

Root Cause



The root cause of this problem is a defect in Pegasystems’ code/rules. This issue is likely related to a potential deadlock within the Pega core engine code.


Resolution



This issue is resolved through the following local change:

Add the prconfig setting: <env name="compiler/classloadCompilerOutput" value="false"/>

and restart the server.

Published January 31, 2016 - Updated October 8, 2020

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