At 05:21 AM 23/08/2002, you wrote:

>You do have to commit, though, before you can proceed to alter something you
>just added

commit? If you mean complete the transaction, then yes, that's when the
error occurs if using WISQL's DSQL.

> Hello,
>
> Using Linux FirebirdSS T6.2.681, is it necessary to have exclusive access
> to add constraints to a table?
>
> I just created 3 tables, 2 master tables and one detail on a live
> system. Then with WISQL and Linux version ISQL using this code:
>
> ALTER TABLE T_SECTION
> ADD CONSTRAINT MASTER_TTYPE
> FOREIGN KEY ( SEC_TTYPE )
> REFERENCES TRL_TYPE ( TTYPE ) /* this one */
> ON UPDATE CASCADE
> ON DELETE CASCADE
> , ADD CONSTRAINT MASTER_SECID
> FOREIGN KEY ( SEC_ID )
> REFERENCES T_SEC_ID ( SECID )
> ON UPDATE CASCADE
> ON DELETE CASCADE
>
> gave me the error: "table TRL_TYPE is in use", which is silly because I
> just created those tables and nobody has the software that uses them
> yet. The only way to get it through was to kill all applications
>accessing
> the gds, until I had the only connection.
>
> I don't see anything in the docs about needing to have exclusive access to
> the entire database in order to alter a table. Maybe I missed it. Any
>ideas?
>
> Cheers.
>
> Scott.
>
>
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