[mrtg] Sql user connections

Dijk, Sebastian van sebastian.van.dijk at vecozo.com
Wed Sep 21 15:54:21 MEST 2005

As i am getting a bit more familiar with the "snmp troubles" i am now
trying to monitor our "SQL user connections" :)
With GETIF i found that i need to use "."
to monitor the amount of "sql user connections'.
When i enter this ID in snmp walk i get a bit weird result (you should
only expect the value that's been read)
D:\snmpwalk>snmpwalk ipadres community .
= Gauge
: 111
So it does work, it measures 111 SQL user connections.
However what is that strange ID i get on the 2nd line ?
If i use that one with snmp walk i get no result.
I tried to use the "good ID" in MRTG : 
ozo at 
Then i started it :
D:\BEHEER\MRTG\mrtg-2.11.1\bin>perl mrtg test.txt
This gave me this result : 
SNMP Error:
Received SNMP response with error code
  error status: noSuchName
  index 1 (OID:
SNMPv1_Session (remote host: "" [].161)
                  community: "read_vecozo"
                 request ID: 1624282877
                PDU bufsize: 8000 bytes
                    timeout: 2s
                    retries: 5
                    backoff: 1)
 at D:/BEHEER/MRTG/mrtg-2.11.1/bin\..\lib\mrtg2/SNMP_util.pm line 490
SNMPGET Problem for .
.1.16.0 sysUptime sysName on read_vecozo at
 at mrtg line 1849
ERROR: Target[sql_users_sql01][_IN_] ' $target->[0]{$mode} ' did not
eval into d
efined data
ERROR: Target[sql_users_sql01][_OUT_] ' $target->[0]{$mode} ' did not
eval into
defined data
What is wrong ??
Met vriendelijke groet, 
Sebastian van Dijk

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