How to Restore an Agent Job that was Dropped

Once upon a time, you had one job, well actually two jobs. The first SQL Server agent job was important, the other was a test. You have decided you do not need the test agent job. Quick right-click on a job name, remove, confirm, done. When you refreshed the list, the test job was still there, but the other one - the important job - was gone.

Panic started knocking on your door! Oh, if only you had jobs in the source control or scripted out as a backup.

You take a deep breath and a sip of cold water and look into your database backup folder: it is there. The msdb database full backup is there, and you are safe.

PS: This is based on a true story. No system databases were harmed.

Solution

While I was doing my research I found solutions to restore the job by (potentially) breaking the msdb database. I am not that keen to play with the system databases, at least not with those that pay for my meals.

I figured out there must be another way to restore the dropped jobs.

Prerequisites

Firstly, we have to restore a copy of the msdb database with the job in it. For instance, restore it as msdb_backup.

Process

This is the process that the script follows. Each one of these steps is implemented in the script.

We need a category, so that is the first part of the script.
We know the category, now we add the job: sp_add_job.
The job needs the steps, so adding all the steps with sp_add_job_step.
By default jobs start with step=1 however, sometimes it is not the case, so we need to update that: sp_update_job (setting this in point 2 will fail if step_id > 1).
Jobs may have multiple schedules, so we add them all: sp_add_jobschedule.
Finally, for the local jobs, we make sure to set the server: sp_add_jobserver.

Before we start though, there are few things that we need to set:

USE [<msdb_backup>] run the script in the context of the restored MSDB backup
@JobName is the name of the job that we are restoring
@JobNameSuffix is the piece of string added at the end of the restored job name for instance, "_RESTORED"

Script

After all the variables we set, time to execute the script to generate a set of commands to recreate the job (see the example below the script):

-- use restored msdb database backup
USE [msdb_backup];
-- set the bane of the job that needs to be restored
DECLARE @JobName NVARCHAR(MAX) = N'NewJobToBeRestored_001_name';
-- this will add a suffix to the name of the job
DECLARE @JobNameSuffix NVARCHAR(MAX) = N'_RESTORED';
DECLARE @Begin NVARCHAR(MAX) = CHAR(10) + 'BEGIN ' + CHAR(10);
DECLARE @End NVARCHAR(MAX) = CHAR(10) + 'END ' + CHAR(10);
DECLARE @SQLCommand NVARCHAR(MAX) = '';
DECLARE @Transaction NVARCHAR(MAX) = 'USE [msdb];' + CHAR(10) + 
'BEGIN TRANSACTION
DECLARE @ReturnCode INT = 0;
';
DECLARE @ReturnCode NVARCHAR(MAX) = '@ReturnCode = '
DECLARE @Error NVARCHAR(MAX) = CHAR(10) + 'IF (@@ERROR <> 0 OR @ReturnCode <> 0) GOTO QuitWithRollback';
DECLARE @QuitWithRollback NVARCHAR(MAX) = 'COMMIT TRANSACTION' + CHAR(10) + 'GOTO EndSave QuitWithRollback:
    IF (@@TRANCOUNT > 0) ROLLBACK TRANSACTION' + CHAR(10) + 
'EndSave:';
SET @SQLCommand = @Transaction + @SQLCommand;
CREATE TABLE #JOBCREATION (id int identity(1,1),cmd text);
INSERT INTO #JOBCREATION
SELECT @SQLCommand;
-- 1. Category
INSERT INTO #JOBCREATION
SELECT 'IF NOT EXISTS (SELECT name FROM msdb.dbo.syscategories WHERE name= '+ 'N''' 
+ sc.name + '''' + ' AND category_class=' + CAST(sc.category_class AS NVARCHAR(MAX)) +')'
+ @Begin
+ 'EXEC @ReturnCode = msdb.dbo.sp_add_category '
+ '@class='+ 'N'''+ CAST(CASE sc.category_class 
WHEN 1 THEN 'JOB' 
WHEN 2 THEN 'ALERT' 
WHEN 3 THEN 'OPERATOR'
ELSE 'N/A'
END AS NVARCHAR) + ''''
+ ', ' + '@type='+ 'N'''+ CAST(
CASE sc.category_type 
WHEN 1 THEN 'LOCAL' 
WHEN 2 THEN 'MULTISERVER' 
WHEN 3 THEN 'OPERATOR'
ELSE 'N/A'
END AS NVARCHAR(MAX)) + ''''
+ ', ' + '@name='+ 'N''' + sc.name + ''''
+ ';'
+ @Error 
+ @End
FROM dbo.sysjobs AS sj 
JOIN dbo.syscategories AS sc ON sj.category_id = sc.category_id
WHERE sj.name = @JobName;
-- 2. Add job
INSERT INTO #JOBCREATION
SELECT 'EXEC @ReturnCode = msdb.dbo.sp_add_job '
+ '@job_name='+ 'N''' + sj.name + @JobNameSuffix + ''''
+ ', ' + '@enabled='+ CAST(sj.enabled AS NVARCHAR(MAX))
+ ', ' + '@notify_email_operator_name='+ CAST(so.name AS NVARCHAR(MAX))
+ ', ' + '@notify_level_eventlog='+ CAST(sj.notify_level_eventlog AS NVARCHAR(MAX))
+ ', ' + '@notify_level_email='+ CAST(sj.notify_level_email AS NVARCHAR(MAX))
+ ', ' + '@notify_level_netsend='+ CAST(sj.notify_level_netsend AS NVARCHAR(MAX))
+ ', ' + '@notify_level_page='+ CAST(sj.notify_level_page AS NVARCHAR(MAX))
+ ', ' + '@delete_level='+ CAST(sj.delete_level AS NVARCHAR(MAX))
+ ', ' + '@description='+ 'N''' + COALESCE(description, '') + ''''
+ ', ' + '@category_name='+ 'N''' + CAST(sc.name AS NVARCHAR(MAX)) + ''''
+ ', ' + '@owner_login_name='+ 'N''' + COALESCE(CAST(SUSER_SNAME(owner_sid) AS NVARCHAR(MAX)),'') + ''''
+ ';'
+ @Error 
FROM dbo.sysjobs AS sj 
JOIN dbo.syscategories AS sc ON sj.category_id = sc.category_id
JOIN dbo.sysoperators AS so ON sj.notify_email_operator_id = so.id
WHERE sj.name = @JobName;
-- 3. Add job steps
INSERT INTO #JOBCREATION
SELECT 'EXEC @ReturnCode = msdb.dbo.sp_add_jobstep '
+ '@job_name='+ 'N''' + CAST(sj.name + @JobNameSuffix AS NVARCHAR(MAX)) + ''''
+ ', ' + '@step_name='+ 'N''' + step_name + ''''
+ ', ' + '@step_id='+ CAST(step_id AS NVARCHAR)
+ ', ' + '@cmdexec_success_code='+ CAST(cmdexec_success_code AS NVARCHAR(MAX))
+ ', ' + '@on_success_action='+ CAST(on_success_action AS NVARCHAR(MAX))
+ ', ' + '@on_success_step_id='+ CAST(on_success_step_id AS NVARCHAR(MAX))
+ ', ' + '@on_fail_action='+ CAST(on_fail_action AS NVARCHAR(MAX))
+ ', ' + '@on_fail_step_id='+ CAST(on_fail_step_id AS NVARCHAR(MAX))
+ ', ' + '@retry_attempts='+ CAST(retry_attempts AS NVARCHAR(MAX))
+ ', ' + '@retry_interval='+ CAST(retry_interval AS NVARCHAR(MAX))
+ ', ' + '@os_run_priority='+ CAST(os_run_priority AS NVARCHAR(MAX))
+ ', ' + '@subsystem='+ 'N''' + subsystem + ''''
+ ', ' + '@command='+ 'N''' + COALESCE(command,'') + ''''
+ ', ' + '@database_name='+ 'N''' + COALESCE(database_name,'') + ''''
+ ', ' + '@output_file_name='+ 'N''' + COALESCE(output_file_name,'') + ''''
+ ', ' + '@flags='+ CAST(flags AS NVARCHAR(MAX))
+ ';'
+ @Error 
FROM dbo.sysjobs AS sj 
JOIN dbo.sysjobsteps AS sjs ON sj.job_id = sjs.job_id
WHERE sj.name = @JobName
ORDER BY sjs.step_id ASC;
-- 4. Startup step
-- it is needed in case the job starts from step_id > 1
INSERT INTO #JOBCREATION
SELECT 'EXEC @ReturnCode = msdb.dbo.sp_update_job '
+ '@job_name='+ 'N''' + sj.name + @JobNameSuffix + ''''
+ ', ' + '@start_step_id='+ CAST([start_step_id] AS NVARCHAR(MAX))
+ ';'
+ @Error 
FROM dbo.sysjobs AS sj 
WHERE sj.name = @JobName;
-- 5. Add schedule
INSERT INTO #JOBCREATION
SELECT 'EXEC @ReturnCode = msdb.dbo.sp_add_jobschedule '
+ '@job_name='+ 'N''' + CAST(sj.name + @JobNameSuffix AS NVARCHAR(MAX)) + ''''
+ ', ' + '@name='+ 'N''' + CAST(ss.name AS NVARCHAR(MAX)) + ''''
+ ', ' + '@enabled='+ CAST(ss.enabled AS NVARCHAR(MAX))
+ ', ' + '@freq_type='+ CAST(ss.freq_type AS NVARCHAR(MAX))
+ ', ' + '@freq_interval='+ CAST(ss.freq_interval AS NVARCHAR(MAX))
+ ', ' + '@freq_subday_type='+ CAST(ss.freq_subday_type AS NVARCHAR(MAX))
+ ', ' + '@freq_subday_interval='+ CAST(ss.freq_subday_interval AS NVARCHAR(MAX))
+ ', ' + '@freq_relative_interval='+ CAST(ss.freq_relative_interval AS NVARCHAR(MAX))
+ ', ' + '@freq_recurrence_factor='+ CAST(ss.freq_recurrence_factor AS NVARCHAR(MAX))
+ ', ' + '@active_start_date='+ CAST(ss.active_start_date AS NVARCHAR(MAX))
+ ', ' + '@active_end_date='+ CAST(ss.active_end_date AS NVARCHAR(MAX))
+ ', ' + '@active_start_time='+ CAST(ss.active_start_time AS NVARCHAR(MAX))
+ ', ' + '@active_end_time='+ CAST(ss.active_end_time AS NVARCHAR(MAX))
+ ';'
+ @Error 
from sysjobschedules AS sjs
join sysschedules AS ss on sjs.schedule_id = ss.schedule_id
join sysjobs AS sj on sjs.job_id = sj.job_id
WHERE sj.name = @JobName;
-- 6. Add server
INSERT INTO #JOBCREATION
SELECT 'EXEC @ReturnCode = msdb.dbo.sp_add_jobserver '
+ '@job_name='+ 'N''' + CAST(sj.name + @JobNameSuffix AS NVARCHAR(MAX)) + ''''
+ ', ' + '@server_name = N''' + COALESCE(sts.server_name, '(LOCAL)') + ''''
+ ';'
+ @Error 
FROM sysjobservers AS sjs
JOIN sysjobs AS sj ON sjs.job_id = sj.job_id
LEFT JOIN systargetservers AS sts ON sjs.server_id = sts.server_id
WHERE sj.name = @JobName;
INSERT INTO #JOBCREATION
SELECT @QuitWithRollback;
-- see all the commands
SELECT * FROM #JOBCREATION;
-- drop the temp table
DROP TABLE #JOBCREATION

Output

After we run the script the output will look more or less like this. It is a result set made of commands to be executed.

How to Restore an Agent Job that was Dropped

Solution

Prerequisites

Process

Script

Output

Example

Final word

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How to Restore an Agent Job that was Dropped

Solution

Prerequisites

Process

Script

Output

Example

Final word

Rate

Share

Categories

Tags

Share

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