[Veritas-bu] win nt 4 + exchange 5.5 + NBU 4.5

hello list users,

i've checked the list archive for a solution first, but there was no 
satisfactory one.

i have a problem with online backuping pf microsoft exchange Database and 
Information Store (Exchange 5.5) [directives: 'Microsoft Exchange 
Server:\Directory\' and 'Microsoft Exchange Server:\Information Store\'] 
running on a winnt 4.0 box. the server is sun solaris 8 with NB45. NB45 is 
patched.

i have right licenses, i have the exchange additional package installed on 
both windows and solaris box.

i get very often the EXIT STATUS 12 (file open failed). sometimes everything 
goes fine, sometimes it doesn't. i've discovered that restarting the NBU 
client process on the client (windows) side helps for a couple of days, but 
the problem occurs within next week after restarting.

below you'll find the log output on the server side:

-----
1088100339 1 4 4 POZ-3250-01BP 2705 0 0 POZ-3250-01NT bpsched added backup 
job (jobid=2705) for client POZ-3250-01NT, policy poz-3250-01nt_exch_onl, 
schedule Pelny1 part 0 to NetBackup scheduler work queue
1088100339 1 4 4 POZ-3250-01BP 2705 0 0 POZ-3250-01NT bpsched started backup 
job for client POZ-3250-01NT, policy poz-3250-01nt_exch_onl, schedule Pelny1 
on storage unit poz-3250-01bp_stu
1088100342 1 4 4 POZ-3250-01BP 2705 0 0 POZ-3250-01NT bpsched client 
POZ-3250-01NT handling path Microsoft Exchange Server:\Directory\
1088100342 1 4 4 POZ-3250-01BP 2705 0 0 POZ-3250-01NT bpsched client 
POZ-3250-01NT handling path Microsoft Exchange Server:\Information Store\
1088100513 1 4 4 POZ-3250-01BP 2705 0 0 POZ-3250-01NT bptm begin writing 
backup id POZ-3250-01NT_1088100339, copy 1, fragment 1, to media id 011372 
on drive index 1
1088100523 1 4 32 POZ-3250-01BP 2705 0 0 POZ-3250-01NT bpbrm from client 
POZ-3250-01NT: FTL - NetBackup Exchange Session initiation failed: WIN32 
-939523591: Unknown error
1088100523 1 4 32 POZ-3250-01BP 2705 0 0 POZ-3250-01NT bpbrm from client 
POZ-3250-01NT: FTL - Backup operation aborted!
1088100523 1 4 16 POZ-3250-01BP 2705 0 0 POZ-3250-01NT bptm media manager 
terminated by parent process
1088100572 1 68 4 POZ-3250-01BP 2705 0 0 POZ-3250-01NT bpsched CLIENT 
POZ-3250-01NT  POLICY poz-3250-01nt_exch_onl  SCHED Pelny1  EXIT STATUS 12 
(file open failed)
1088100572 1 4 16 POZ-3250-01BP 2705 0 0 POZ-3250-01NT bpsched backup of 
client POZ-3250-01NT exited with status 12 (file open failed)
1088100572 1 4 4 POZ-3250-01BP 2705 0 0 POZ-3250-01NT bpsched started backup 
job for client POZ-3250-01NT, policy poz-3250-01nt_exch_onl, schedule Pelny1 
on storage unit poz-3250-01bp_stu
1088100574 1 4 4 POZ-3250-01BP 2705 0 0 POZ-3250-01NT bpsched client 
POZ-3250-01NT handling path Microsoft Exchange Server:\Directory\
1088100574 1 4 4 POZ-3250-01BP 2705 0 0 POZ-3250-01NT bpsched client 
POZ-3250-01NT handling path Microsoft Exchange Server:\Information Store\
1088100596 1 4 4 POZ-3250-01BP 2705 0 0 POZ-3250-01NT bptm begin writing 
backup id POZ-3250-01NT_1088100572, copy 1, fragment 1, to media id 011372 
on drive index 1
1088100606 1 4 32 POZ-3250-01BP 2705 0 0 POZ-3250-01NT bpbrm from client 
POZ-3250-01NT: FTL - NetBackup Exchange Session initiation failed: WIN32 
-939523591: Unknown error
1088100606 1 4 32 POZ-3250-01BP 2705 0 0 POZ-3250-01NT bpbrm from client 
POZ-3250-01NT: FTL - Backup operation aborted!
1088100609 1 4 4 POZ-3250-01BP 2705 0 0 POZ-3250-01NT bptm successfully 
wrote backup id POZ-3250-01NT_1088100572, copy 1, fragment 1, 81920 Kbytes 
at 8530,667 Kbytes/sec
1088100611 1 4 16 POZ-3250-01BP 2705 0 0 POZ-3250-01NT bpsched suspending 
further backup attempts for client POZ-3250-01NT, policy 
poz-3250-01nt_exch_onl, schedule Pelny1 because it has exceeded the 
configured number of tries
1088100611 1 68 4 POZ-3250-01BP 2705 0 0 POZ-3250-01NT bpsched CLIENT 
POZ-3250-01NT  POLICY poz-3250-01nt_exch_onl  SCHED Pelny1  EXIT STATUS 12 
(file open failed)
1088100611 1 4 16 POZ-3250-01BP 2705 0 0 POZ-3250-01NT bpsched backup of 
client POZ-3250-01NT exited with status 12 (file open failed)
1088100936 1 4 4 POZ-3250-01BP 0 0 0 POZ-3250-01NT bpsched skipping backup 
of client POZ-3250-01NT, policy poz-3250-01nt_exch_onl, schedule Pelny1 
because it has exceeded the configured number of tries

-----

the interesting thing is that i have several actually the same from the 
technical point of view installations. 23 installations 
(winnt+exch5.5+solarisNBU45) works fine, 3 do have the above problem. the 
patches, firmware, apps versions are the same everywhere.

i've also tested that the above problem is present in the configuration of 
win nt4 + exchange 5.5 + solaris/NB45FP6.

do you have any idea of what might be wrong? i've run out of them.

best regards,
-- 
Marek Gorka
Sun Professional Services
Sun Microsystems Poland Sp. z o.o.