DB検索時に、下記のエラーが出ました、
原因はいろいろ調べましたが、不明です。よろしくお願いします！
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java.lang.LinkageError: loader constraint violation in interface itable initialization:
when resolving method "org.seasar.extension.dbcp.impl.XAConnectionImpl.getXAResource()Ljavax/transaction/xa/XAResource;"
the class loader (instance of org/jboss/modules/ModuleClassLoader) of the current class,

org/seasar/extension/dbcp/impl/XAConnectionImpl,and the class loader (instance of <bootloader>) for interface javax/sql/XAConnection have different Class objects
for the type javax/transaction/xa/XAResource used in the signature