| Measurement |
Description |
Measurement
Unit |
Interpretation |
| Global_tx_begun_rate
|
Indicates the
rate at which global transactions are beginning to occur at the
server. |
Trans/Sec
|
A high value indicates an overload on the server.
|
| Active_global_tx
|
Indicates the
average number of concurrently active global transactions. |
Number
|
If the value of this measure is high, it signifies greater load on the
server. This might increase the number of waiting local transactions.
|
| Global_tx_duration
|
Indicates the
average duration of global transactions. |
Secs
|
A high transaction duration value indicates increased load on the
server.
|
| Global_commit_duration
|
Indicates the
average duration of commit for global transactions. |
Secs
|
If the total time taken for committing a global transaction is high,
then it indicates a bottleneck on the server.
|
| Optimization_rate
|
Indicates the
rate at which global transactions being converted to single phase for
optimization. |
Trans/Sec
|
A sudden increase in this value might be caused due to one
of the following reasons.
a. There might be more number of
requests for the application.
b. There might be a bottleneck
on the application.
|
| Global_tx_commit_rate
|
Indicates the
rate at which global transactions being committed. |
Trans/Sec
|
If the rate of transactions that are being committed is very high, it
signifies load on the server. It might be caused when some locked
transactions are released suddenly.
|
| Global_tx_rolled_back_rate
|
Indicates the
rate at which the global transactions are being rolled back. |
Trans/Sec
|
A high value indicates a problem with the application. Possible
reasons could be the problem with the application or with some other
dependent server (e.g. Database).
|
| Global_tx_timedout_rate
|
Indicates the
rate at which the global transactions are being timed out. |
Trans/Sec
|
Again, a rise in the value could be due to the problem with the
application or with some other dependent server like the database.
|
| Global_tx_involved
|
Indicates the
total number of global transactions involved at the server. |
Number
|
A sudden increase in the value might be caused if the commit duration
of a transaction goes low.
|
| Global_prepare_duration
|
This measure
indicates the average duration of prepare for the global transactions. |
Secs
|
A high value indicates a bottleneck on the server.
|