We are upgrading our Pega application from pega 6.1SP2 to Pega 7.2.2.

Migrate.sh is running fine with no errors.

With the same config Upgrage.sh is failing with below error.

[java] ============ PegaRULES Bootstrap Configuration ============
[java] Date:
[java] Java Version: IBM Corporation 1.7.0
[java] Configuration: file:////p01/app/pega/<App name>/PegaInstallTemp-01-March-2017-10.36.42/prbootstrap.properties
[java] Pega-EngineCode: 07-10-27
[java] JDBC Driver: oracle.jdbc.OracleDriver
[java] JDBC URL: <JDBC URL>
[java] JDBC User: <JDBC USER>
[java] Database: Oracle Oracle Database 11g Enterprise Edition Release Proprietary information hidden.0 - 64bit Production
[java] With the Partitioning, Automatic Storage Management, OLAP, Data Mining
[java] and Real Application Testing options
[java] Driver: Oracle JDBC driver Proprietary information hidden.0
[java]
[java] (!) Unable to use given database configuration
[java] (!) Unable to locate classes on filesystem
[java] =============== End Bootstrap Configuration ===============
[java]
[java] Unable to load phase 2 bootstrap class: com.pega.pegarules.internal.bootstrap.phase2.PRBootstrapImpl
[java] Mar 01, 2017 8:04:23 PM com.pega.pegarules.internal.bootstrap.PRBootstrap
[java] SEVERE: Error initializing PRAppLoader
[java] java.lang.ClassNotFoundException: com.pega.pegarules.internal.bootstrap.phase2.PRBootstrapImpl
[java] at com.pega.pegarules.internal.bootstrap.PRMiniLoader.loadClass(PRMiniLoader.java:388)
[java] at java.lang.ClassLoader.loadClass(ClassLoader.java:731)
[java] at com.pega.pegarules.internal.bootstrap.PRBootstrap.loadPhase2BootstrapClass(PRBootstrap.java:720)
[java] at com.pega.pegarules.internal.bootstrap.PRBootstrap.checkForStartup(PRBootstrap.java:662)
[java] at com.pega.pegarules.internal.bootstrap.PRBootstrap.invokeMethodPropagatingThrowable(PRBootstrap.java:408)
[java] at com.pega.pegarules.boot.internal.extbridge.AppServerBridgeToPega.invokeMethodPropagatingThrowable(AppServerBridgeToPega.java:224)
[java] at com.pega.pegarules.boot.internal.extbridge.AppServerBridgeToPega.invokeMethod(AppServerBridgeToPega.java:273)
[java] at com.pega.pegarules.pub.PegaRULES.main(PegaRULES.java:85)

Migrate.sh script ran successfully with the same DB configurations.

Earlier Upgrade.sh failed because system name was given properly. so we restored DB and started from running migrate.sh again. Upgrade.sh failed second time with file space issue and tried upgrade.sh again, time it failed with above error.

could it be because of already created auto generated Pega files and config properties?

Please let me know what you think might be going on here.

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