Hi Tim,

> Checked with the development manager. What seems to be happening is that a
> select query is run against the DB, with txn isolation of read

consistency.

You might want to try an isolation of "snapshot" - this shouldn't block
any readers of the data.

> When we try to make a sale (txn isolation of write consistency ) or close

a

> shift, the sale or shift txn waits until the select is closed. In other
> words, doing a select with read consistency seems to lock the record set
> returned by the query.

With regards,

Martijn Tonies
Database Workbench - the developer tool for InterBase & Firebird
Upscene Productions
http://www.upscene.com