Hi

In my app I am opening a db connection then running a set of queries and at 
the end closing the db connection. Once in a while a query fails to run 
saying database connection is closed. How can I ensure that db connection is 
confirmed open before running a query? Will

dbconn.close
dbconn.open

before running a query do the trick or do I need to make more comprehensive 
checks?

Thanks

Regards