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MQSeries.net Forum IndexWebSphere Message Broker SupportIntermittent DB connection error

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kspranava
PostPosted: Wed Apr 20, 2011 11:10 pm Post subject: Intermittent DB connection error Reply with quote

Centurion

Joined: 27 Apr 2003
Posts: 124

Hi All,

We are facing following exception INTERMITTENTLY, not always (may be for 10% of cases), in our PROD WMB server

Sep 26 16:26:16 camel1 WebSphere Broker v6103[3690]: [ID 702911 user.error] (prodBrk.prodEG)[46]BIP2393E: Database error: ODBC return code '-1' from data source 'prodDB'. : prodBrk.7f95fc96-2901-0000-0080-d2b2eec3efc9: /build/S610_P/src/DataFlowEngine/ImbOdbc.cpp: 323: ImbOdbcHandle::checkRcInner: :
Sep 26 16:26:16 camel1 WebSphere Broker v6103[3690]: [ID 702911 user.error] (prodBrk.prodEG)[46]BIP2322E: Database error: SQL State '08S01'; Native Error Code '0'; Error Text '[IBM][ODBC Oracle Wire Protocol driver]Connection refused. Verify Host Name and Port Number.'. : prodBrk.7f95fc96-2901-0000-0080-d2b2eec3efc9: /build/S610_P/src/DataFlowEngine/ImbOdbc.cpp: 438: ImbOdbcHandle::checkRcInner: :
Sep 26 16:26:16 camel1 WebSphere Broker v6103[3690]: [ID 702911 user.error] (prodBrk.prodEG)[46]BIP2322E: Database error: SQL State '08001'; Native Error Code '-1'; Error Text '[IBM][ODBC Oracle Wire Protocol driver][Oracle]ORA-12203: unable to connect to destination'. : prodBrk.7f95fc96-2901-0000-0080-d2b2eec3efc9: /build/S610_P/src/DataFlowEngine/ImbOdbc.cpp: 438: ImbOdbcHandle::checkRcInner: :


When checked for network connectivity between PROD WMB server and the Oracle PROD server, connectivity is availble always... but wonder why we are getting the above mentioned error resulting in loss of production messages...

Output of continuous ping to Oracle server (dbIP) reveals the following,

command: ping -s dbIP
output:
64 bytes from eaidr2.prod.mobily.lan (dbIP): icmp_seq=242. time=2.41 ms
64 bytes from eaidr2.prod.mobily.lan (dbIP): icmp_seq=243. time=2.37 ms
64 bytes from eaidr2.prod.mobily.lan (dbIP): icmp_seq=244. time=2.22 ms
64 bytes from eaidr2.prod.mobily.lan (dbIP): icmp_seq=245. time=2.46 ms
64 bytes from eaidr2.prod.mobily.lan (dbIP): icmp_seq=246. time=2.54 ms
64 bytes from eaidr2.prod.mobily.lan (dbIP): icmp_seq=247. time=2.62 ms
64 bytes from eaidr2.prod.mobily.lan (dbIP): icmp_seq=248. time=2.15 ms
64 bytes from eaidr2.prod.mobily.lan (dbIP): icmp_seq=249. time=2.14 ms
64 bytes from eaidr2.prod.mobily.lan (dbIP): icmp_seq=250. time=2.04 ms
64 bytes from eaidr2.prod.mobily.lan (dbIP): icmp_seq=251. time=2.32 ms
64 bytes from eaidr2.prod.mobily.lan (dbIP): icmp_seq=252. time=2.08 ms
64 bytes from eaidr2.prod.mobily.lan (dbIP): icmp_seq=253. time=2.04 ms
64 bytes from eaidr2.prod.mobily.lan (dbIP): icmp_seq=254. time=2.25 ms


What is time period before which WMB times out when there is no connection returned from the DB? How to customize the value?

Env:

bash-3.00$ mqsiservice -v
BIPv610 en US POSIX
ucnv Console CCSID 367 dft ucnv CCSID 367
ICUW US-ASCII ICUA US-ASCII

BIP8996I: Version: 6103
BIP8997I: Product: WebSphere Message Brokers
BIP8998I: CMVC Level: S610-FP03 DH610-L81015
BIP8999I: Build Type: Production

BIP8071I: Successful command completion.

bash-3.00$ dspmqver
Name: WebSphere MQ
Version: 6.0.2.9
CMVC level: p600-209-100316
BuildType: IKAP - (Production)

bash-3.00$ uname -a
SunOS camel1 5.10 Generic_142900-04 sun4u sparc SUNW,Sun-Fire-V445

Thanks in advance,
kspranava.
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kspranava
PostPosted: Wed Apr 20, 2011 11:12 pm Post subject: Reply with quote

Centurion

Joined: 27 Apr 2003
Posts: 124

Hi Moderator,

By mistake, I have posted this in this forum... request you to move it to WMB forum...

Thanks,
kspranava.
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Vitor
PostPosted: Thu Apr 21, 2011 4:12 am Post subject: Reply with quote

Grand High Poobah

Joined: 11 Nov 2005
Posts: 24972
Location: Ohio, USA

kspranava wrote:
request you to move it to WMB forum...


So moved.
_________________
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Insanity is the best defence.
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Vitor
PostPosted: Thu Apr 21, 2011 4:16 am Post subject: Re: Intermittent DB connection error Reply with quote

Grand High Poobah

Joined: 11 Nov 2005
Posts: 24972
Location: Ohio, USA

kspranava wrote:
Sep 26 16:26:16 camel1 WebSphere Broker v6103[3690]: [ID 702911 user.error] (prodBrk.prodEG)[46]BIP2322E: Database error: SQL State '08S01'; Native Error Code '0'; Error Text '[IBM][ODBC Oracle Wire Protocol driver]Connection refused. Verify Host Name and Port Number.'. : prodBrk.7f95fc96-2901-0000-0080-d2b2eec3efc9: /build/S610_P/src/DataFlowEngine/ImbOdbc.cpp: 438: ImbOdbcHandle::checkRcInner: :


"Connection refused" doesn't sound like a timeout, at least not a DB or WMB one. It sounds more like a firewall or other piece of network getting cross and closing the connection.

The fact that you've "proved" network connectivity by pinging the box just proves that port is open. Doesn't prove that the port the DB is using is open.

I'd have a quiet word with your network people & see what interesting hardware and/or software they've got in that link. Especially something which cycles / resets / updates at or about the same times that you've had problems.
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