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--(SQL Server 2000 only) 

use msdb
go

if exists (select * from sysobjects where name = N'sp_sqlagent_rename' and type ='P')
    drop proc dbo.sp_sqlagent_rename
go

create proc dbo.sp_sqlagent_rename 
@old_server nvarchar(30)
as

set nocount on

if (charindex(N'8.00', @@version, 0) = 0)
begin
    raiserror('sp_sqlagent_rename is only required on SQL Server 2000, procedure will abort', 11, 1)
end

if (ISNULL(IS_SRVROLEMEMBER(N'sysadmin'), 0) = 0)
begin
    raiserror('sp_sqlagent_rename can only be used by sysadmin role members, procedure will abort', 11, 1)
end

declare @new_server nvarchar(30)
select @new_server = convert(nvarchar(30), serverproperty(N'servername'))

if exists(select * from msdb.dbo.sysjobs where upper(originating_server) = upper(@old_server))
begin
    update msdb.dbo.sysjobs
    set originating_server = @new_server
    where originating_server = @old_server

    raiserror('sp_sqlagent_rename, %d entries updated from %s to %s', 10, 1, 
        @@rowcount,  @old_server, @new_server )
end
else
begin
    raiserror('sp_sqlagent_rename, no entries found for @old_server = %s, 0 rows are updates', 10, 1, @old_server)
end
go

-- sample usage
-- exec msdb.dbo.sp_sqlagent_rename @old_server = 'GERTD00\DEV'