IBM WebSphere Application Server Metrics
IBM WebSphere Application Server is one of the non-Oracle application server that is monitored using Oracle Enterprise Manager Grid Control.
This chapter provides descriptions for all IBM WebSphere Application Server metric categories, and tables list and describe associated metrics for each category.
Applications Metrics
This category of metrics describes the applications running on the server.
Default Collection Interval — Every 15 minutes
Table 3-1 Applications Metrics
| Metric | Description |
| Active Requests | Current active requests of the application |
| Average EJB Method Execution Time | Average EJB method execution time |
| No. of Active EJB Methods | Number of active EJB methods |
| Request Processing Time | When a request comes to an application server, it passes through a servlet and is then processed. This metrics depicts the time taken by the server to fulfill this request. Since the servlet is the entry or exit point of the request, this also describes the time taken by the servlet to fulfill a request |
Dynamic Cache Metrics
This category of metrics provides information about the dynamic cache.
Default Collection Interval — Every 15 minutes
Table 3-2 Dynamic Cache Metrics
| Metric | Description |
| InMemory Cache Size | Size of the InMemory cache |
| Max InMemory Cache Size | Maximum memory that can be used by the cache |
| Total Timeout Invalidations | Total number of timeout invalidations that have occurred at the server |
EJB Metrics
This category of metrics provides information about the EJBs that were received and responded to maximum requests.
Default Collection Interval — Every 15 minutes
| Metric | Description |
| Active Methods | Number of methods of the EJBs that are currently active |
| Current Average Execution Time | Average method execution time for the current period |
| Method Execution Rate per second | Indicates the EJB method execution rate per second |
| Total Method Calls | Total method calls on the EJBs |
EJBModule Metrics
This category of metrics describes the EJB module deployed on the server.
Default Collection Interval — Every 15 minutes
| Metric | Description |
| Active Methods | Number of methods of the EJBs that are currently active |
| Average method execution time during last interval | Average execution time of the method during the last interval |
| Avg Method Response Time | Average response time of the method |
| Concurrent Lives | Concurrent lives |
| Current average method execution time | Current average method execution time |
| Destroys | Number of EJBs that were destroyed by the container |
| Instantiates | Number of new instances made |
| Number of EJB Methods Executed during last interval | Number of EJB methods executed during the last interval |
| Ready Count | Number of EJBs in the ready state |
| Total Method Calls | Total method calls on the EJBs |
EntityBean Metrics
This category of metrics describes the EJB module deployed on the server.
Default Collection Interval — Every 15 minutes
| Metric | Description |
| Activates | Number of times an instanced was activated |
| Activation Time | Time taken by the EJB container to activate the EJB instance |
| Active Methods | Number of methods which can be invoked for action simultaneously |
| Average method execution time during last interval | Average method execution time during the last interva |
| Avg Drain Size | Average size of the drain |
| Concurrent Lives | Number of EJB beans in the live state in the container at the same time. In the live state, the client can invoke a method on these beans for business processes. |
| Creates | Number of new instances that were created for the EJB |
| Current average execution time | Number of EJB methods that were executed during the last interval |
| Destroys | Number of instances that were destroyed |
| Drains From Pool | Number of instance drains from the pool |
| EJB Method Execution Rate per second | EJB method execution rate per second |
| Gets Found | Number of Gets found |
| Gets From Pool | Number of times the instance was taken from the pool |
| Instantiates | Number of new instantiates of the EJB object |
| Load Time | Time taken for loading beans in the server |
| Loads | Number of times an instance was loaded |
| No of EJB Methods Executed during last interval | Number of EJB methods that were executed during the last interval |
| Passivates | Number of times this EJB instance was passivated |
| Passivation Time | Time taken by the container to passivate the bean |
| Pool Size | Size of the EJB instances pool |
| Ready Count | Number of instances that are in the ready state |
| Removes | Number of instances of this EJB that were removed from the container |
| Returns Discarded | Number of returns that were discarded |
| Returns To Pool | Number of instances that were returned to the pool after usage |
| Store Time | Store time for the EJB instance |
| Stores | Entity beans are stored in persistent storage devices such as relational databases so that they can be recreated even after the container goes down. This metric depicts the number of times the entity beans instance state is stored in the database or persistent storage, instead of being stored in the container. |
J2EE Server Metrics
This category of metrics describes the current server statistics.
Default Collection Interval — Every 15 minutes
| Metric | Description |
| Active EJB Methods | Number of active methods |
| Active Requests | Number of active requests |
| Active Sessions | Number of active sessions |
| Active Transactions | Number of active transactions |
| Delta Method Call | Number of EJB methods that were executed during the last interval |
| EJB Method Execution Rate per second | EJB method execution rate per second |
| EJB Method Execution Time | Time taken by EJBs for method execution |
| Live Sessions | Number of live sessions (including those that are alive but not active.) |
| Open JDBC Connections | Number of open JDBC connections |
| Request Processing Time | Time taken to process requests |
| Requests Processed for second | Number of requests processed per second |
JDBCProvider Metrics
This category of metrics depicts the name of the provider software that is being used to connect to a relational database using JDBC.
Default Collection Interval — Every 15 minutes
Table 3-7 JDBC Provider Metrics
| Metric | Description |
| Average Wait Time | Average waiting time for a new connection |
| Avg Use Time | Average time a provider was used |
| Concurrent Waiters | Number of connections that are in the waiting state |
| Faults | Number of faults |
| Free Pool Size | Size of the free pool |
| JDBC Operation Timer | JDBC operation timer |
| Number Allocates | Number of allocations |
| Number Connection Handles | Number of connections that are currently being handled |
| Number Creates | Number of times a new instance of the provider was created |
| Number Destroys | Number of times the instance of this provider was destroyed |
| Number of Managed Connections | Number of managed connections |
| Number Returns | Number of returns |
| Percent Maxed | Percentage maxed |
| Percent Used | Percentage used |
| Pool Size | Size of the pool |
| Prepared Statement Cache Discards | Count of prepared statement cache discard and the statement recompiled |
JSP Metrics
This category of metrics provides information about the JSPs running on this server.
Default Collection Interval — Every 15 minutes
| Metric | Description |
| Active Requests | Number of requests that are currently being processed by the JSP |
| Average Processing Time (seconds) | Average JSP processing time |
| Concurrent Requests | Number of concurrent requests |
| Current Client Processing Time | Current client processing time |
| Number Errors | Number of errors that were generated while displaying the JSP |
| Requests Per Second During Last Interval | Number of active requests per second during the last interval |
| Response Time | JSP response time in seconds |
| Time Taken During Last Interval | Time taken during the last interval |
| Total Requests | Total number of requests received |
JVM Metrics
This category of metrics provides information about the Java Virtual Machines.
Default Collection Interval — Every 15 minutes
| Metric | Description |
| CPU Utilization (%) | |
| Free Memory | Amount of free memory available |
| Total Memory | Total memory used by the server |
| Up Time | Time for startup of the server after activation |
| Used Memory | Memory used by the server |
MessageDrivenBean Metrics
This category of metrics provides information about the message-driven bean.
Default Collection Interval — Every 15 minutes
Table 3-10 MessageDrivenBean Metrics
| Metric | Description |
| Active Methods | Number of active methods |
| Avg Drain Size | Average drain size |
| Avg Server Session Wait Time | Average server session wait time |
| Avg method exec. time during last interval | Average method execution time during the last interval |
| Concurrent Lives | Number of concurrent lives |
| Current avg exec. time | Current method execution time |
| Delta Method Calls | Number of EJB methods that were executed during the last interval |
| Destroys | Number of instances that were destroyed |
| Drains From Pool | Number of drains from the pool of EJB instances |
| EJB Method Execution Rate per second | EJB method execution rate per second |
| Gets Found | Number of gets that were found |
| Gets From Pool | Number of gets from the pool of EJB instances |
| Instantiates | Number of new instances |
| Message Blackout Count | Number of messages that were blacked out |
| Message Count | Number of messages |
| Pool Size | Size of the pool |
| Returns Discarded | Number of returns that were discarded by the pool |
| Returns To Pool | Number of returns to the pool |
| Server Session Usage | Usage of the server session |
ORB Metrics
This category of metrics describes the Object Request Broker (ORB).
Default Collection Interval — Every 15 minutes
| Metric | Description |
| Concurrent Requests | Number of concurrent requests |
| Reference Lookup Time | Time taken to look up a reference of the Object Request Broker |
| Total Requests | Total number of requests to the Object Request Broker |
Response
This category of metrics provides basic information about the IBM WebSphere Application Server.
Status
This metric indicates whether the IBM WebSphere Application Server is up or down. If the value is 1, the server is up. If the value is 0, it is down.
Metric Summary
The following table shows how often the metric's value is collected and compared against the default thresholds. The 'Consecutive Number of Occurrences Preceding Notification' column indicates the consecutive number of times the comparison against thresholds should hold TRUE before an alert is generated.
Table 3-12 Metric Summary Table
| Target Version | Evaluation and Collection Frequency | Upload Frequency | Operator | Default Warning Threshold | Default Critical Threshold | Consecutive Number of Occurrences Preceding Notification | Alert Text |
| All Versions | Every Minute | After Every 60 Samples | = | Not Defined | 0 | 1 | The J2EE Server instance is down |
Servlet Metrics
This category of metrics provides information about the servlets running on this IBM WebSphere Application Server.
Default Collection Interval — Every 15 minutes
| Metric | Definition |
| Active Requests | Number of requests that are currently being processed by the servlet |
| Average Processing Time (seconds) | |
| Concurrent Requests | Number of concurrent requests sent to the servlet |
| Current Client Processing Time | Current client processing time in seconds |
| Number Errors | Number of errors that were generated while responding to a request |
| Requests Per Second During Last Interval | Number of active requests per second during the last interval |
| Response Time | Response time in seconds |
| Time Taken During Last Interval | Time take during the last interval |
| Total Requests | Total number of requests received by the servlet |
SessionManager Metrics
This category of metrics describes the session managers created for web applications.
Default Collection Interval — Every 15 minutes
Table 3-14 SessionManager Metrics
| Metric | Description |
| Activate NonExist Sessions | Number of nonexistent sessions that are activated |
| Active Sessions | Number of active sessions |
| Affinity Breaks | Number of session affinity breaks |
| Cache Discards | Number of times that the cache was discarded |
| Created Sessions | Number of session objects that were created by the server |
| External ReadSize | External read size |
| External ReadTime | External read time |
| External Write Size | External write size for this session |
| External WriteTime | External write time |
| Invalidated Sessions | Number of sessions that were invalidated |
| Invalidated Via Timeout | Number of sessions that were invalidated by timeouts |
| Live Sessions | Number of live sessions till date |
| No Room For New Session | No room for new sessions |
| Session Life Time | Session's life time |
| Time Since Last Activated | Time since this session was last activated |
Stateful SessionBean Metrics
This category of metrics provides information about the stateful session EJB deployed on the IBM WebSphere Application Server.
Default Collection Interval — Every 15 minutes
Table 3-15 Stateful SessionBean Metrics
| Metric | Description |
| Average Method Execution Time | Average response time of the methods that were executed during the last interval |
| Activates | Number of time the EJB instance was activated by the container |
| Activation Time | Time taken by the container to put the EJB instance in an active state |
| Active Methods | Number of methods that are currently being invoked by the EJB |
| Concurrent Lives | Number of concurrent lives |
| Creates | Number of times a new instance of this EJB was created by the container |
| Current Average Execution Time | Current average execution time of methods by the EJB |
| Destroys | Number of times the EJB instance was destroyed by the container |
| EJB Method Execution Rate per second | Rate of execution of EJB methods per second |
| EJB Method Call Count during Last Interval | Number of EJB methods that were executed during the last interval |
| Instantiates | Number of times the EJB was instantiated after it was destroyed |
| Passivates | Number of times the EJB was passivated from the EJB container |
| Passivation Time | Time taken by the EJB container to change the state of the EJB from active to passivation |
| Ready Count | Number of EJBs that are in the ready state in the containers |
| Removes | Number of times the EJB was removed from the EJB container |
StatelessSessionBean Metrics
This category of metrics provides information about the stateless session bean.
Default Collection Interval — Every 15 minutes
Table 3-16 StatelessSessionBean Metrics
| Metric | Description |
| Active Methods | Number of methods that are currently active |
| Avg Drain Size | All EJB objects exist in a container. The container can discard them by either destroying or passivating them. This metric indicates the drain size, that is the number of objects removed from a container at a time, or in one drain. |
| Average Method Execution Time | Average method execution time during the last interval |
| Concurrent Lives | Number of concurrent lives |
| Current Average Execution Time | Current method execution time |
| Delta Method Calls | Number of EJB methods that were executed during the last interval |
| Destroys | Number of instances that were destroyed by the container |
| Drains From Pool | Number of drains from the pool |
| EJB Method Execution Rate per second | EJB method execution rate per second |
| Gets Found | Number of gets that were found |
| Gets From Pool | Number of times instances were fetched from the pool |
| Instantiates | Number of new EJB instances |
| Pool Size | Size of the pool |
| Ready Count | Number of instances that are in the ready state |
| Returns Discarded | For a stateless or entity bean, after an object is utilized for some action or business process, it is sent back to the container so that it can be reused. However, when the object is in process, the container may recreate more objects in the pool so that when this particular object is returned to the container the container may not be able to accept it because its pool size is full. Hence these objects are discarded. This metrics depicts the number of such objects. |
| Returns To Pool | Number of returns to the pool |
System Metrics
This category of metrics provides information about the system that is hosting this IBM WebSphere Application Server.
Default Collection Interval — Every 15 minutes
| Metric | Description |
| Avg CPU Utilization | Average utilization of the system's CPU |
| CPU Utilization | Current utilization of the system's CPU |
| Free Memory | Amount of free memory currently available in the system |
ThreadPool Metrics
This category of metrics provides information about the thread pool that contains the current running thread.
Default Collection Interval — Every 15 minutes
| Metric | Description |
| Active Threads | Number of currently active threads |
| Percent Maxed | Maximum percentage of threads at a time in the pool |
| Pool Size | Maximum number of threads a pool can contain |
| Thread Creates | Number of threads that were created in this pool |
| Thread Destroys | Number of times a thread pool was destroyed |
TransactionService Metrics
This category of metrics describes the transaction service. The following table lists the metrics and their associated descriptions.
Default Collection Interval — Every 15 minutes
Table 3-19 TransactionService Metrics
| Metric | Description |
| Active Global Transactions | Number of global transactions that are active |
| Global Before Completion Duration | Global before completion duration |
| Global Commit Duration | Time taken for committing global transaction |
| Global Prepare Duration | Global prepare duration |
| Global Transaction Duration | Time taken by global transactions |
| Global Transaction Timeout | Number of transactions that were timed out |
| Global Transactions Begun | Number of global transactions that were initiated |
| Global Transactions Committed | Number of global transactions that were committed |
| Global Transactions Involved | Global transactions involved |
| Global Transactions RolledBack | Number of transactions that were rolled back |
| Local Before Completion Duration | Local before completion duration |
| Local Commit Duration | Time taken for committing a local transaction |
| Local Transaction Duration | Local transaction duration |
| Local Transaction Timeout | Number of local transactions that were stuck and timed out |
| Local Transactions Begun | Number of local transactions that have begun |
| Local Transactions Committed | Number of local transactions that were committed |
| Local Transactions RolledBack | Time taken for rolling back local transactions |
| Number Optimizations | Number of optimizations |
WebModule Metrics
This category of metrics provides information about the web module or war file deployed on this server.
Default Collection Interval — Every 15 minutes
| Metric | Description |
| Number Loaded Servlets | Number of servlets that were reloaded into the server |
| Number Reloads | Number of reloads of the web application inside the server memory |
WebServices Service Metrics
This category of metrics provides information about the webservices running on this IBM WebSphere Application Server.
Default Collection Interval — Every 15 minutes
Table 3-21 WebServices Service Metrics
| Metric | Description |
| Dispatch Response Time | Dispatch response time |
| Number Dispatched | Number of replies dispatched |
| Number Loaded Services | Number of loaded services |
| Number Received | Number of requests received by this webservice |
| Number Successful | Number successful |
| Reply Response Time | Time taken by the webservice to respond to a request |
| Reply Size | Size of the reply sent by this webservice |
| Request Response time | Request response time |
| Request Size | Size of the request |
| Response Time | Time taken to respond to a request |
| Size | Size |
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