SQL 2000 Reovery Fails Sometimes. Error Code (Error 3136). How To Make Database Write Mode?

Hello,

I am applying hourly differential backup to the backup server from production with the following command. This command makes the database on standby server into read only mode.


RESTORE DATABASE ARSYSTEM FROM DISK = 'E:SQL backup from productionsql_full_backup'
WITH MOVE 'arsystem' TO
'd:ardataarsystem.mdf' ,
MOVE 'arsystem_log' TO 'D:ARLOGARsystem' ,
STANDBY = 'E:SQL backup from productionSQL daily diff back up'


Now I want to run a command which will put the database in write mode. I have created a job which would make the datbase Write mode. This job runs successfully sometimes and fails sometimes. I need to ensure that the job always succeeds. When it fails, how do I troubleshoot and what is the possible fix?

Thanks in advance.

The error message is

Cannot apply the backup on device 'E:SQL backup from productionSQL daily diff back up' to database 'ARSYSTEM'. [SQLSTATE 42000] (Error 3136) RESTORE DATABASE is terminating abnormally. [SQLSTATE 42000] (Error 3013). The step failed.


The steps for the job are as follows with the failing step highlighted in bold.


copy /y "\172.31.9.12Remedy BackupackupSQL backupsql_full_backup" "E:SQL backup from productionsql_full_backup"

copy /y "\172.31.9.12Remedy BackupackupSQL backupSQL daily diff back up" "E:SQL backup from productionSQL daily diff back up"

xp_cmdshell 'net stop "bmc remedy action request system server"'

exec rp_kill_db_processes 'ARSYSTEM'

RESTORE DATABASE ARSYSTEM

FROM DISK = 'E:SQL backup from productionsql_full_backup'

WITH

MOVE 'arsystem' TO 'd:ardataarsystem.mdf' ,

MOVE 'arsystem_log' TO 'D:ARLOGARsystem' ,

NORECOVERY


Failing step

RESTORE DATABASE ARSYSTEM

FROM DISK = 'E:SQL backup from productionSQL daily diff back up'

WITH

MOVE 'arsystem' TO 'd:ardataarsystem.mdf' ,

MOVE 'arsystem_log' TO 'D:ARLOGARsystem' ,

RECOVERY



xp_cmdshell 'del /f "E:SQL backup from productionsql_full_backup"'

xp_cmdshell 'del /f "E:SQL backup from productionsql daily diff back up"'

xp_cmdshell 'net start "bmc remedy action request system server"'





I have scheduled the following hourly diffential restore job too which never fails.

RESTORE DATABASE ARSYSTEM FROM DISK = 'E:SQL backup from productionsql_full_backup'
WITH MOVE 'arsystem' TO
'd:ardataarsystem.mdf' ,
MOVE 'arsystem_log' TO 'D:ARLOGARsystem' ,
STANDBY = 'E:SQL backup from productionSQL daily diff back up'
EXEC MASTER..XP_CMDSHELL 'del /f "E:SQL backup from productionSQL daily diff back up"'