[GENERAL] lots of puzzling log messages

[Dennis Sacks]

I am Seeing twelve of these messages every five to ten seconds in the 
Postgresql serverlog when my java application is running:

2005-04-19 16:43:03 LOG:  00000: duration: 0.246 ms
LOCATION:  exec_simple_query, postgres.c:960
2005-04-19 16:43:03 LOG:  00000: statement: rollback; begin;
LOCATION:  pg_parse_query, postgres.c:464
postgresql.conf has:
log_connections = true
log_duration = true
log_statement = true
log_timestamp = true
Running  postgres 7.4.2.
The Java application uses postgresql-7.4.1.jar. It is a custom developed 
application.

I am wondering what these log messages mean. Any ideas?
Dennis
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