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Classloading hierarchy in PU

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Hi Team, We are have recently upgraded from GS9.7.2 to GS10.2.1 grid, our application uses spring-jdbc-3.2.0-RELEASE however if i see the optional jars in GS10.2.1 it contains spring-jdbc-4.1.1-RELEASE. Our application persists some data in sybase databse, it was all working fine in gs9.7.2 but giving errors in gs10.2.1. After analyzing the stacktrace we notice that spring-jdbc4.1.1 jars are getting loaded instead of spring-jdbc-3.2.0. However the manifest contains the reference to jdsbc-3.2.2. Is this expected, the documentation states that pu class loader will try to load the classes first, then will lookup to gsc class loader but that does not seems to happen in this case

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