How can I change @BackupDirectory and @CleanupTime after install

[gigocabrera]

I installed the MaintenanceSolution.sql script as is without changing the @BackupDirectory or @CleanupTime. How can I change those settings? I tried running the script again with my own settings to no avail.

Is there a way to remove the MaintenanceSolution.sql completely and reinstall it again with the correct values?
Or is there a way to update those settings to my own choosing?

[gigocabrera]

I didn't realize there was an UNINSTALL script on Ola's FAQ page. I was able to completely remove the SQL Server Maintenance Solution and install it again with the correct defaults.

[Eddict]

the only 'problem' with that uninstall script is that it will also delete all the schedules of the jobs, if you have set them up already.

i guess you can prevent that by amending the uninstall script and add the @delete_unused_schedule parameter to each sp_delete_job statement, eg:

EXECUTE msdb.dbo.sp_delete_job @job_name = 'CommandLog Cleanup', @delete_unused_schedule = 0

the other option is to amend the MaintenanceSolution.sql script so you can just rerun it:
replace

    IF @CurrentJobStepSubSystem IS NOT NULL AND @CurrentJobStepCommand IS NOT NULL AND NOT EXISTS (SELECT * FROM msdb.dbo.sysjobs WHERE [name] = @CurrentJobName)
    BEGIN
      EXECUTE msdb.dbo.sp_add_job @job_name = @CurrentJobName, @description = @JobDescription, @category_name = @JobCategory, @owner_login_name = @JobOwner
      EXECUTE msdb.dbo.sp_add_jobstep @job_name = @CurrentJobName, @step_name = @CurrentJobName, @subsystem = @CurrentJobStepSubSystem, @command = @CurrentJobStepCommand, @output_file_name = @CurrentOutputFileName, @database_name = @CurrentJobStepDatabaseName
      EXECUTE msdb.dbo.sp_add_jobserver @job_name = @CurrentJobName
    END

with

    IF @CurrentJobStepSubSystem IS NOT NULL AND @CurrentJobStepCommand IS NOT NULL
    BEGIN
      IF NOT EXISTS (SELECT * FROM msdb.dbo.sysjobs WHERE [name] = @CurrentJobName)
      BEGIN
        EXECUTE msdb.dbo.sp_add_job @job_name = @CurrentJobName, @description = @JobDescription, @category_name = @JobCategory, @owner_login_name = @JobOwner
        EXECUTE msdb.dbo.sp_add_jobstep @job_name = @CurrentJobName, @step_name = @CurrentJobName, @subsystem = @CurrentJobStepSubSystem, @command = @CurrentJobStepCommand, @output_file_name = @CurrentOutputFileName, @database_name = @CurrentJobStepDatabaseName
        EXECUTE msdb.dbo.sp_add_jobserver @job_name = @CurrentJobName
      END
      ELSE
      BEGIN
        PRINT 'update ' + @CurrentJobName + ' ' + @CurrentJobStepCommand
        EXECUTE msdb.dbo.sp_update_jobstep @job_id = NULL, @job_name = @CurrentJobName, @step_id = 1, @step_name = @CurrentJobName, @subsystem = @CurrentJobStepSubSystem, @command = @CurrentJobStepCommand, @output_file_name = @CurrentOutputFileName, @database_name = @CurrentJobStepDatabaseName
      END
    END

if your SQL Server is on Linux you need to amend an extra piece of code to get this working:
replace

  IF @HostPlatform = 'Windows'
  BEGIN
    SELECT @CleanupTime = Value
    FROM #Config
    WHERE [Name] = 'CleanupTime'
  END

with

    SELECT @CleanupTime = Value
    FROM #Config
    WHERE [Name] = 'CleanupTime'

i really have no clue why this @HostPlatform check is here tbh, doesn't seem to make sense (to me)