community.borland.com
Article #25078: Object In Use error when adding a foreign key
Problem:
Getting the error "unsuccessful metadata update -object
is in use"
while adding a foreign key with more than one connection to the database.
Solution:
IB V4.x
Modifying metadata like altering tables of an existing table require exclusive
access to the database, therefore only one connection to the database is
allowed.
Last Modified: 23-SEP-00