24a5bfe6_0__Error_Reporting_and_Logging__syslog
[Severity] DEBUG1..DEBUG5 [Usage] Provides successively-more-detailed information for use by developers. [eventlog] INFORMATION [syslog] 
DEBUG
D E B U G
I N F O
N O T I C E
W A R N I N G
E R R
C R I T
PostgreSQL: Documentation: 9.0: Error Reporting and Logging