Hi Tom,

ok, I did that.
I read the parameters for the database (protocol, subprotocol, ...) from 
database_repository.xml.
Then I try to establish a connection to the DB. If that fails the DB is not 
available.

You don't think this could be a functionality that PB API could provide?

Frank 

-----Ursprüngliche Nachricht-----
Von: Thomas Dudziak [mailto:[EMAIL PROTECTED] 
Gesendet: Freitag, 19. August 2005 09:48
An: OJB Users List
Betreff: Re: How to check if database is available

On 8/19/05, Hiller, Frank RD-AS2 <[EMAIL PROTECTED]> wrote:

> how can one check via OJB whether the database is avaialable before 
> establishing a connection to it?

I think that in JDBC you'd have to try to establish a connection to it and if 
that fails, then likely the database is not available (for whatever reason). 
AFAIK there is no other generic way (though individual databases may provide 
other means).
Since OJB builds upon JDBC, you probably got to try to establish a connection 
and execute the query that you've defined as the keep-alive query, and see 
whether this is possible.

Tom

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