--- In firebird-support@yahoogroups.com, "Gustavo" <gusm@d...> wrote:

> I am developping an application in Delphi 5 and I am using IBX.

Sometimes my application does processing on big tables that last a lot
of time and it needs to be sure that it can complete the operation
when it commits the transaction. So I want to lock the tables involved
before beginning the operation.

Take a look at (1.5) Explicit locking on Page 15 of the release notes
for FB 1.5. It might help.

rgds

Si Carter
http://www.tectsoft.net/