*JBoss Messaging Null Persistence Service
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*Purpose:* To disable the Database Persistence Policy and introducing Null Persistence Service.
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*Step 1:* we have to delete the existing \server\default\deploy\messaging\hsqldb-persistence-service.xml.
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*Step 2:* delete the following *messaging* security policy from the \server\default\deploy\messaging\messaging-jboss-beans.xml file
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