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Seeing following errors in the server db log.

db_server.exe(): Error: db_VISTA error -920 (errno == "Bad file descriptor") db_server.exe(): Error: Cannot open database in ".vbs\db"

Any idea, seeing this error for every 20 mins. This is happening for only two vobs.

Followed below with no luck.

http://www-01.ibm.com/support/docview.wss?uid=swg21236027

http://www-01.ibm.com/support/docview.wss?rs=984&uid=swg21148639

http://www-01.ibm.com/support/docview.wss?uid=swg21133944

Machavity
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maestromani
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1 Answers1

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The About db_VISTA errors page mentions:

db_VISTA database error -920 - no lock manager is installed
db_VISTA error 2 from OpenFileMapping() of lockmgr_almd

And reference the technote "DB_Vista -920 error and Error 2 from OpenFileMapping()"

Even if this isn't exactly the same error message, check the status of your lock manager (lockmgr.exe on Windows, lockmgr on Unix), both on the client and the server.

Regarding the db_server process, you can try a stop/restart ClearCase on the server, to reset both db_server and vob_server processes.

That can be also related to almd parameters, initially found in:

 /opt/rational/clearcase/config/vob/db/vob_almd_params

(for all vobs), but also found in each vobs:

 /path/to/vobstorage/yourVob.vbs/db/vob_almd_params

I usually try to raise those parameters in case of 920 errors.
For instance:

-u 4000 -q 16000

That (meaning those local vob configs) would explain why you see errors in only two of your vobs.

To stop the services on Windows: "How do I determine via Windows command line whether ALBD service is running?".

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VonC
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  • ,weird, I don't find vob_almd_params under db and config folder. – maestromani Aug 12 '14 at 11:52
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    @maestromani that might have changed on Windows (all my vobs servers were Unix only). Do a search for any `vob_*param*.*` file – VonC Aug 12 '14 at 11:53
  • I see -u 4000 and -q 16000 in the regedit. suddenly I see db_server.exe(14424): Error: db_VISTA error -917 (errno == "Bad file descriptor") and db_server.exe(14424): Error: DBMS error in "\atria\lib\db\db1.c" line 1287coming up. Any idea ? – maestromani Aug 12 '14 at 12:44
  • @maestromani I don't understand your last comment. do you mean you have modified something in the registry of the windows server? If yes, which entry? Did you restart everything? – VonC Aug 12 '14 at 12:45
  • I looked at HKEY_LOCAL_MACHINE\SOFTWARE\Atria\ClearCase\CurrentVersion\Lock and see -a almd -f 980 -u 4000 -q 16000 as value already. So didn't not change anything. – maestromani Aug 12 '14 at 12:48
  • @maestromani can you at least restart everything, and see if the errors persists? – VonC Aug 12 '14 at 12:49
  • @maestromani also try and double the first two value, if the error persists: `-a almd -f 1960 -u 8000 -q 16000` – VonC Aug 12 '14 at 13:21
  • Service restarted twice, Error: DBMS error in "\atria\lib\db\db1.c" line 1287 seen for few mins, then back to old error. – maestromani Aug 12 '14 at 13:30
  • @maestromani did you restart *all* services? And do you see an 907 error (which exists: http://www-01.ibm.com/support/docview.wss?uid=swg21236027), or a 917 one? (which does not exist or at least, isn't documented) – VonC Aug 12 '14 at 13:33
  • All services restarted. I confirm I see 917. --> db_server.exe(14424): Error: db_VISTA error -917 (errno == "Bad file descriptor") – maestromani Aug 12 '14 at 13:38
  • @maestromani never seen a 917. Time to dbcheck the vob, I guess. http://www-01.ibm.com/support/docview.wss?uid=swg21122748 – VonC Aug 12 '14 at 13:39
  • @maestromani just to be sure: is your client using a ClearCase 7.1.0.2, like the server does? – VonC Aug 12 '14 at 13:40
  • Yes, I will do dbcheck later today. Most of the clients got 7.1.2.10. This case is there for almost a year now.917 error is only for few mins, now back to 920 – maestromani Aug 12 '14 at 13:50
  • @maestromani you mean clients are running a more recent version than the ClearCase running on the server? – VonC Aug 12 '14 at 13:51
  • Not sure the rational behind this, this is the case before I came into this organization. This is there for almost a year now. I'm seeing all this happening in last two days. to my knowledge nothing changed in the servers. – maestromani Aug 12 '14 at 13:57
  • @maestromani How many vobs are you managing on the Windows Vob server? Maybe those values are actually too important? for instance: https://publib.boulder.ibm.com/infocenter/cchelp/v7r0m0/index.jsp?topic=/com.ibm.rational.clearcase.books.cc_admin.doc/perf-svr.htm mention 18 as a starting value for the -f parameter ( number of database files that can be open concurrently): you have 980! That seems quite ambituous for a *Windows* server. – VonC Aug 13 '14 at 05:39
  • weird didn't receive alert for last comment. We have 116 vobs in our environment. – maestromani Sep 04 '14 at 10:43
  • @maestromani still, 1960 seem too important for that server. Try reading https://publib.boulder.ibm.com/infocenter/cchelp/v7r0m0/index.jsp?topic=/com.ibm.rational.clearcase.books.cc_admin.doc/perf-svr.htm and adjust your parameters. – VonC Sep 04 '14 at 10:56
  • I'm now, I see one service account using clearcase license every 30 mins, is there any way to find what it is doing with clearcase ? I see this errors hitting every 30 mins. – maestromani Sep 04 '14 at 11:23