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Tomcat startup fails due to custom Tomcat version string



Tomcat startup fails due to custom Tomcat version string.

Error Messages

2014-12-24 16:15:24,397 [ocalhost-startStop-2] [ ] [ ] [ ] ( etier.impl.EngineStartup) ERROR - Failed to interrupt indexing
java.lang.StringIndexOutOfBoundsException: String index out of range: 15
at java.lang.String.substring(

Steps to Reproduce

Install Pega 7.1.7 that uses customized version of Tomcat as the application server.

Root Cause

The root cause of this problem is a defect in Pegasystems’ code. In Pega 7.1.7, there is a need to check the version of Tomcat to determine if the merge functionality is supported.
The code fails parsing the webServerNameAndVersion while checking the version of Tomcat if the string returned is not in the expected format.


This issue is resolved by HFix-20560.

Use prpcutils to import the hotfix as described in the following PDN article. Be sure to change the import mode to hotfix (import.mode=hotfix)


Published January 31, 2016 - Updated October 8, 2020

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