Theodore Chaikalis ( https://hibernate.atlassian.net/secure/ViewProfile.jspa?accountId=557058%... ) *updated* an issue Hibernate ORM ( https://hibernate.atlassian.net/browse/HHH?atlOrigin=eyJpIjoiN2QwM2VjYjA1... ) / Improvement ( https://hibernate.atlassian.net/browse/HHH-14141?atlOrigin=eyJpIjoiN2QwM2... ) HHH-14141 ( https://hibernate.atlassian.net/browse/HHH-14141?atlOrigin=eyJpIjoiN2QwM2... ) Hibernate session created twice in Weblogic ( https://hibernate.atlassian.net/browse/HHH-14141?atlOrigin=eyJpIjoiN2QwM2... ) Change By: Theodore Chaikalis ( https://hibernate.atlassian.net/secure/ViewProfile.jspa?accountId=557058%... ) We noticed that during application deployment, all relevant Hibernate persistence units are getting created 2 times, thus significantly increasing deployment time. Attached is a relevant log from a deployment and a demo war to reproduce the issue Tested with Hibernate > 5.2.11. Currently: 5.4.16 Reproduce Actions Actions : 1. create new data source in weblogic with jndi name: *jdbc/SSA*  Use oracle db. 2. deploy app 3. check logs You will notice that the log entry: Processing PersistenceUnitInfo \[name: primary] happens 2 times\!\! ( https://hibernate.atlassian.net/browse/HHH-14141#add-comment?atlOrigin=ey... ) Add Comment ( https://hibernate.atlassian.net/browse/HHH-14141#add-comment?atlOrigin=ey... ) Get Jira notifications on your phone! Download the Jira Cloud app for Android ( https://play.google.com/store/apps/details?id=com.atlassian.android.jira.... ) or iOS ( https://itunes.apple.com/app/apple-store/id1006972087?pt=696495&ct=Em... ) This message was sent by Atlassian Jira (v1001.0.0-SNAPSHOT#100141- sha1:76df2fe )