Database connection failure
- direction connection: the same error (dns lookup works but not IP connectivity)
- session pooling:2-1. its automatically shut down without errors after starting the application2-2. if I enable these three lines, #logging.level.org.hibernate=DEBUG#logging.level.org.hibernate.type.descriptor.sql.BasicBinder=TRACE#logging.level.org.hibernate.engine.transaction=TRACEI get this: java.lang.Exception: exception just for purpose of providing stack trace
- transaction poolingI get this: prepared statement "S_1" already existsso many ppl advised to add "?prepareThreshold=0" to the jdbc string. but it causes another error.
