> I am using delphi+fibplus component to create a firebird database during run time. After created the database, run script to create a single table and insert some records of data then disconnect and close it.
> After disconnect, I execute gfix command in my application to set the database mode to read only but system prompt for database in use.

Could it be that you have set the databasename at designtime (in
objectinspector) and that delphi/fibplus have an open connection?

John