The Java JVM SNMP provider reports incorrect stats when asked for multiple OIDs within JVM-MANAGEMENT-MIB::jvmMemPoolUsed and JVM-MANAGEMENT-MIB::jvmMemPoolMaxSize. I've traced this as far as something within Java_sun_management_MemoryPoolImpl_getUsage0 within libmanagement, but that's as far as I was able to take it.
 
Good results via snmpwalk example:
snmpwalk -v2c -cremovedpw 127.0.0.1 1.3.6.1.4.1.42.2.145.3.163.1.1.2.110.1.11
 
JVM-MANAGEMENT-MIB::jvmMemPoolUsed.1 = Counter64: 13562176 bytes
JVM-MANAGEMENT-MIB::jvmMemPoolUsed.2 = Counter64: 100364776 bytes
JVM-MANAGEMENT-MIB::jvmMemPoolUsed.3 = Counter64: 3451328 bytes
JVM-MANAGEMENT-MIB::jvmMemPoolUsed.4 = Counter64: 378413648 bytes
JVM-MANAGEMENT-MIB::jvmMemPoolUsed.5 = Counter64: 44289744 bytes
 
Now, when you query multiple OIDs at once, the JVM "sticks" on the first value it looked up and returns it for all data points:
 
Bad results via requesting multiple OIDs:
snmpget -v2c -cremovedpw 127.0.0.1 1.3.6.1.4.1.42.2.145.3.163.1.1.2.110.1.11.1 1.3.6.1.4.1.42.2.145.3.163.1.1.2.110.1.11.2 1.3.6.1.4.1.42.2.145.3.163.1.1.2.110.1.11.3 1.3.6.1.4.1.42.2.145.3.163.1.1.2.110.1.11.4 1.3.6.1.4.1.42.2.145.3.163.1.1.2.110.1.11.5
 
JVM-MANAGEMENT-MIB::jvmMemPoolUsed.1 = Counter64: 13562176 bytes
JVM-MANAGEMENT-MIB::jvmMemPoolUsed.2 = Counter64: 13562176 bytes
JVM-MANAGEMENT-MIB::jvmMemPoolUsed.3 = Counter64: 13562176 bytes
JVM-MANAGEMENT-MIB::jvmMemPoolUsed.4 = Counter64: 13562176 bytes
JVM-MANAGEMENT-MIB::jvmMemPoolUsed.5 = Counter64: 13562176 bytes
 
I've seen this problem for both the JvmMemPoolUsed and jvmMemPoolMaxSize tree, but it may exist for other components.
 
The java version is:
java version "1.6.0_03"
Java(TM) SE Runtime Environment (build 1.6.0_03-b05)
Java HotSpot(TM) Client VM (build 1.6.0_03-b05, mixed mode, sharing)

The problem was first noticed when we tried to gather these stats for the first time from the JVM. Other SNMP stats provided by the JVM are working for us.
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The following nightly tests are affected by this bug:-

closed/sun/management/snmp/jvmMemory/JvmMemPoolTest.sh
sun/management/jmxremote/bootstrap/JvmstatCountersTest.java

Also include the non-closed name for the test just in case
it ever moves:

sun/management/snmp/jvmMemory/JvmMemPoolTest.sh