SNMP Agent issues?

Question

Hi all,
Do anybody have some OID samples (and what they mean) of WebLogic MIB?
I'm trying to understand the WLS MIB, but...
Thanks in advance.
Rodrigo Minati

Answer 1

I will explain it here with an example:
if I give the following snmpwalk command to find the total number of
jdbc connections and the result is:
c:\releases\61\jdk131\bin\java snmpwalk -p 161 -c public localhost
.1.3.6.1.4.1.140.625.190.1.55
Object ID:
.1.3.6.1.4.1.140.625.190.1.55.32.48.99.98.102.99.49.55.101.52.52.99.4
8.102.97.53.48.48.49.101.54.54.99.102.101.48.52.49.98.49.98.48.99
INTEGER: 4
Object ID:
.1.3.6.1.4.1.140.625.190.1.55.32.55.102.51.52.55.98.50.99.102.101.98.
97.54.50.51.56.99.57.56.49.97.99.57.54.100.52.49.55.57.57.55.100
INTEGER: 1
Object ID:
.1.3.6.1.4.1.140.625.190.1.55.32.97.98.51.55.54.53.48.51.98.57.99.50.
99.54.55.52.97.100.100.52.97.48.102.51.100.100.102.97.53.98.101.48
INTEGER: 4
So, here you are asking for the OID .1.3.6.1.4.1.140.625.190.1.55 which
represents jdbcConnectionPoolRuntimeConnectionsTotalCount (55) from the
jdbcConnectionPoolTable (190)
If you look at the MIB you will see that:
Each table has a number of entries which comprise of a sequence of
attributes.
Each entry has an index or a primary key.
The index is a unique value which is derived from the ObjectName of the
MBean.
So, in the above result:
.1.3.6.1.4.1.140.625.190.1.55 is the OID of the
jdbcConnectionPoolRuntimeConnectionsTotalCount
32 - The next digit - gives the length of the index.
48.99.98.102.99.49.55.101.52.52.99.48.102.97.53.48.48.49.101.54.54.99.102.101.48.52.49.98.49.98.48.99
These are the 32 ascii characters which is the index of this entry in
the jdbcConnectionPoolTable
and it represents the index - 0cbfc17e44c0fa5001e66cfe041b1b0c
As, I had 3 connection pools, I got 3 entries back each with a unique
index of 32 ascii characters.
If you were to find the indexes only, give the following command:
c:\releases\61\jdk131\bin\java snmpwalk -p 161 -c public localhost
.1.3.6.1.4.1.140.625.190
Object ID:
.1.3.6.1.4.1.140.625.190.1.1.32.48.99.98.102.99.49.55.101.52.52.99.48
.102.97.53.48.48.49.101.54.54.99.102.101.48.52.49.98.49.98.48.99
STRING: 0cbfc17e44c0fa5001e66cfe041b1b0c
Object ID:
.1.3.6.1.4.1.140.625.190.1.1.32.55.102.51.52.55.98.50.99.102.101.98.9
7.54.50.51.56.99.57.56.49.97.99.57.54.100.52.49.55.57.57.55.100
STRING: 7f347b2cfeba6238c981ac96d417997d
Object ID:
.1.3.6.1.4.1.140.625.190.1.1.32.97.98.51.55.54.53.48.51.98.57.99.50.9
9.54.55.52.97.100.100.52.97.48.102.51.100.100.102.97.53.98.101.48
STRING: ab376503b9c2c674add4a0f3ddfa5be0
So, the strings here are the indexes in the table and match the ones you
see when you find the jdbcConnectionPoolRuntimeConnectionsTotalCount.
If you require more information on snmp, asn1 and mibs, please go
through the white paper attached.
I had written it in the 51 days .... there are differences compared to
61 but the basic concepts are the same ....
Also, please realise that the ASN1 syntax is a standard made for
machines and not humans so its better to use tools which can read and
translate the OIDs for you....
hope this helps
Rodrigo Minati wrote:
Hi all,
Do anybody have some OID samples (and what they mean) of WebLogic MIB?
I'm trying to understand the WLS MIB, but...
Thanks in advance.
Rodrigo Minati