Could not obtain connection metadata java.sql.SQLException: Connections could not be acquired from the underlying database

Issue

• The oraclient was not able to successfully connect to the listener on 127.0.0.1 port 1512

Aug 8, 2012 12:26:26 PM com.mchange.v2.resourcepool.BasicResourcePool$AcquireTask run
WARNING: com.mchange.v2.resourcepool.BasicResourcePool$AcquireTask@7ccd7ccd -- Acquisition Attempt Failed!!! Clearing pending acquires. While trying to acquire a needed new resource, we failed to succeed more than the maximum number of allowed acquisition attempts (30).
2012-08-08 12:26:26,223 [main] WARN  org.hibernate.cfg.SettingsFactory - Could not obtain connection metadata java.sql.SQLException: Connections could not be acquired from the underlying database!