| Measurement |
Description |
Measurement
Unit |
Interpretation |
| Committed_stmt_rate
|
Indicates the
transaction throughput. This measure is the sum of the committed
statements attempted and internal commits (total number of commits
initiated internally by the database manager.) per second. |
Commits/Sec
|
A decrease in
this measure during the monitoring period may indicate that the
applications are not doing frequent commits. This may lead to problems
with logging and data concurrency.
The cause has to be probed in the application.
|
| Rollback_rate
|
Indicates the
rate of unit of work rollbacks. |
Rollbacks/Sec
|
A high rollback
rate is an indicator of bad performance, since work performed up to
the rollback point is wasted. The cause of the rollbacks has to be
probed in the application. |
| Transaction_rate
|
Indicates the
rate of commits and rollbacks for the application using the DB2
Connect gateway. |
Trans/Sec
|
A high
transaction rate with high rollback rate indicates bad performance. |
| In_errors |
Indicates
the rate of inbound packets that contained errors preventing them from being delivered to a higher-layer protocol |
Packets/Sec
|
Ideally, this value should be 0. |
| Out_errors |
Indicates
the rate at which outbound packets could not be delivered as they contained errors |
Packets/Sec
|
Ideally, this value should be 0. |
| In_discards |
Indicates
the rate at which inbound packets were discarded, though such packets did not contain any errors that could prevent them from being delivered to a higher-layer protocol |
Packets/Sec
|
One possible reason for discarding such a packet could be to free up buffer space. |
| Out_discards |
Indicates
the rate at which outbound packets were discarded, though such packets did not contian any errors that could prevent them from being delivered to a higher-layer protocol |
Packets/Sec
|
One possible reason for discarding such a packet could be to free up buffer space. |
| In_N_unicast |
Indicates the rate at which packets which were addressed as multicast or broadcast were received by this layer
|
Packets/Sec
|
|
| Out_N_unicast |
Indicates the rate at which packets which were addressed as multicast or broadcast were sent by this layer |
Packets/Sec
|
|
| In_unicast |
Indicates the rate at which packets which were not addressed as multicast or broadcast were received by this layer
|
Packets/Sec
|
|
| Out_unicast |
Indicates the rate at which packets which were not addressed as multicast or broadcast were sent by this layer |
Packets/Sec
|
|
| Unknown_protocols |
Indicates the rate at which unknown protocols were received |
Packets/Sec
|
For packet-oriented interfaces, this measure will report the number of packets received via the interface which were discarded because of an unknown or unsupported protocol. For character-oriented or fixed-length interfaces that support protocol multiplexing, this measure reports the number of transmission units received via the interface which were discarded because of an unknown or unsupported protocol. For any interface that does not support protocol multiplexing, this counter will always be 0.
|
| Queue_length |
Indicates the length of the output packet queue |
Number
|
A consistent increase in the queue length could be indicative of a network bottleneck.
|