disable constraints
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Thread: disable constraints

  1. #1
    Join Date
    Feb 2000
    Location
    New York,U.S.A.
    Posts
    245
    Hi,
    I am going to import data from database A into database B.Both dbs have the same table definitions. I just need the data from db A to db B. I know that I have to disable the constraints on the tables before I import data into the tables. But I have about 180 tables. Is there a script which can automatically generate another script which I can use to disable the constraints and enable them when I finish importing. It would take forever to disable them manually. I would appreciate if somebody can help.
    Thanks in advance.

  2. #2
    Join Date
    May 2000
    Location
    Portsmouth, NH, USA
    Posts
    378

    Thumbs up use this

    set feed off pages 0 head off echo off line 100 ver off
    col col1 newline

    accept username prompt 'Please enter owner of Tables: '

    REM #
    REM # create script to disable all referencial constraints
    REM #
    spool d:\disable.sql
    select 'alter table '|| r_owner ||'.'||
    table_name ||' disable constraint '||
    constraint_name ||';'
    from user_constraints
    where r_owner = upper('&username')
    and constraint_type = 'R';
    spool off
    REM #
    REM # create script to enable constraints after import
    REM #
    spool d:\enable.sql
    select 'alter table '|| r_owner ||'.'||
    table_name ||' enable constraint '||
    constraint_name ||';'
    from dba_constraints
    where r_owner = upper('&username')
    and constraint_type = 'R';
    spool off
    REM #
    REM #
    REM # Now, just run "@d:\disable.sql" to disable all constraints for the owner entered
    REM #
    REM # to re-enable the constraints just run "@d:\enable.sql"
    REM #

  3. #3
    Join Date
    Feb 2000
    Location
    New York,U.S.A.
    Posts
    245
    Thanks very much.

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