SQL Agent Job - Carry on Failure

  • Bijoy Chacko - Friday, March 9, 2018 5:25 AM

    wak_no1 - Tuesday, March 6, 2018 11:46 AM

    HiI have script that I run to fix orphaned user accounts on a instance - If I run the script in a standards SSMS window, it runs, hits errors with particular user accounts but crucially it carries on running and fixes the orphaned user accounts it can. I’ve put the exact TSQL in a SQL agent job, however when the job is ran, as soon as it hits an error, it stops executing and fails. It’s as if the SQL is parsed differently in a SQL Agent job?How do I get the TSQL to carry on regardless within a SQL Agent job , so that it runs as it does when it’s executed in a SSMS Window?Thanks.

    Have you tried with a Try Catch block

    Nope, never used that before.

  • in case anyone is interested, I solved this by using a try..catch block:

    (also configured the agent job to write out to a log file, so we can capture the problematic accounts and deal with them separately)


    BEGIN TRY

    create table #logins (username nvarchar(max), UserSID nvarchar(max))

    insert into #logins
    EXEC sp_change_users_login 'Report'

    DECLARE @username nvarchar(max);

    DECLARE users_Cursor CURSOR FOR
    SELECT username 
    FROM #logins;

    OPEN users_Cursor;
    FETCH NEXT FROM users_Cursor INTO @username;
    WHILE @@FETCH_STATUS = 0
     BEGIN   
      EXEC sp_change_users_login 'Update_One', @username, @username
      FETCH NEXT FROM users_Cursor INTO @username;
     END;
    CLOSE users_Cursor;
    DEALLOCATE users_Cursor;

    drop table #logins

    END TRY
    BEGIN CATCH
      -- Execute the error retrieval routine.
       SELECT
       ERROR_NUMBER() AS ErrorNumber,
       ERROR_SEVERITY() AS ErrorSeverity,
       ERROR_STATE() as ErrorState,
       ERROR_PROCEDURE() as ErrorProcedure,
       ERROR_LINE() as ErrorLine,
       ERROR_MESSAGE() as ErrorMessage; 
    END CATCH

  • Why not set it up so that the ones that are going to cause errors are excluded from your list?

    DECLARE @sql varchar(max);
    SET @sql = (
        SELECT 'ALTER USER ' + u.name + ' WITH LOGIN = ' + l.name + ';' + CHAR(13)
        FROM sys.database_principals u
        JOIN sys.server_principals l
        ON u.name = l.name
        AND u.sid <> l.sid
        WHERE u.type_desc = 'SQL_USER'
        FOR XML PATH ('')
        );
    EXEC sys.sp_executesql @stmt = @sql;

    If you use an outer join, you can even return a list of orphaned users that couldn't be fixed.

    John

  • John Mitchell-245523 - Thursday, March 15, 2018 8:16 AM

    Why not set it up so that the ones that are going to cause errors are excluded from your list?

    DECLARE @sql varchar(max);
    SET @sql = (
        SELECT 'ALTER USER ' + u.name + ' WITH LOGIN = ' + l.name + ';' + CHAR(13)
        FROM sys.database_principals u
        JOIN sys.server_principals l
        ON u.name = l.name
        AND u.sid <> l.sid
        WHERE u.type_desc = 'SQL_USER'
        FOR XML PATH ('')
        );
    EXEC sys.sp_executesql @stmt = @sql;

    If you use an outer join, you can even return a list of orphaned users that couldn't be fixed.

    John

    I'll take that on-board, thanks.

  • I like the idea of the list of orphans like John is suggesting - seems like you'd want to know, want to address those since there are still orphans. And writing script to not have errors would be my preference. I can't think of the exception as to why you'd leave errors in code and then try to work around the errors instead of writing to address the logic and correct the errors. If the login needs to exist to correct the orphans in the script, it just seems to make sense to check for the logins.

    It looks like when you hit an error executing sp_change_users_login in the modified script, it leaves behind the open cursor and temp table as they wouldn't be cleaned up.

    Sue

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