Oracle Enterprise Manager can be used to manage Apache Tomcat. You can use the All Metrics page for an Apache Tomcat target to view the metrics that are being monitored for that target by Oracle Management Agent.
The Apache Tomcat metrics provide for each metric the following information:
Description
Metric summary. The metric summary can include some or all of the following: target version, evaluation frequency, collection frequency, upload frequency, operator, default warning threshold, default critical threshold, consecutive number of occurrences preceding notification, and alert text.
Multiple Thresholds (where applicable)
This metric category contains aggregated performance metrics spanning all the applications deloyed to the Apache Tomcat container.
This metric shows the number of sessions rejected by all the applications running on the Apache Tomcat container since last collection.
| Target Version | Collection Frequency |
|---|---|
| Apache Tomcat 7.x and earlier | Every 5 minutes |
This metric category contains aggregated performance metrics spanning all the JavaServer Pages (JSPs) deployed to the Apache Tomcat container.
This metric category contains aggregated performance metrics spanning all the Global Request Processors deployed to the Apache Tomcat container.
This metric shows the bytes received by all the request processors running on the Apache Tomcat container since last collection.
| Target Version | Collection Frequency |
|---|---|
| Apache Tomcat 7.x and earlier | Every 5 minutes |
This metric shows the error count on all the request processors running on the Apache Tomcat container since last collection.
| Target Version | Collection Frequency |
|---|---|
| Apache Tomcat 7.x and earlier | Every 5 minutes |
This metric category contains the usage details of the application cache of the Apache Tomcat container.
This metric category contains the metrics for each application deployed to the container.
This metric shows the number of active sessions created since the last collection.
| Target Version | Collection Frequency |
|---|---|
| Apache Tomcat 7.x and earlier | Every 5 minutes |
This metric shows the average time taken (in milliseconds) for processing a request.
| Target Version | Collection Frequency |
|---|---|
| Apache Tomcat 7.x and earlier | Every 5 minutes |
This metric shows the processing time (in milliseconds) since the last collection.
| Target Version | Collection Frequency |
|---|---|
| Apache Tomcat 7.x and earlier | Every 5 minutes |
This metric shows the number of sessions rejected since the last collection.
| Target Version | Collection Frequency |
|---|---|
| Apache Tomcat 7.x and earlier | Every 5 minutes |
This metric shows the number of requests served since the last collection.
| Target Version | Collection Frequency |
|---|---|
| Apache Tomcat 7.x and earlier | Every 5 minutes |
This metric shows the number of new sessions created since the last collection.
| Target Version | Collection Frequency |
|---|---|
| Apache Tomcat 7.x and earlier | Every 5 minutes |
This metric shows the total number of active sessions since startup.
| Target Version | Collection Frequency |
|---|---|
| Apache Tomcat 7.x and earlier | Every 5 minutes |
This metric shows the total processing time (in milliseconds) since startup.
| Target Version | Collection Frequency |
|---|---|
| Apache Tomcat 7.x and earlier | Every 5 minutes |
This metric shows the total number of rejected sessions since startup.
| Target Version | Collection Frequency |
|---|---|
| Apache Tomcat 7.x and earlier | Every 5 minutes |
This metric category contains the attributes of all the data sources configured for the Apache Tomcat container.
This metric category contains the attributes of each Global Request Processor configured on the Apache Tomcat container.
This metric shows the average time taken (in milliseconds) for processing a request by the global request processor.
| Target Version | Collection Frequency |
|---|---|
| Apache Tomcat 7.x and earlier | Every 5 minutes |
This metric shows the number of bytes received by each request processor since the last collection.
| Target Version | Collection Frequency |
|---|---|
| Apache Tomcat 7.x and earlier | Every 5 minutes |
This metric shows the number of bytes sent by each request processor since the last collection.
| Target Version | Collection Frequency |
|---|---|
| Apache Tomcat 7.x and earlier | Every 5 minutes |
This metric shows the error count of each request processor since the last collection.
| Target Version | Collection Frequency |
|---|---|
| Apache Tomcat 7.x and earlier | Every 5 minutes |
This metric category contains the usage details of JSPs.
This metric category provides information about JVM Garbage Collectors.
This metric shows the name of the JVM garbage collector.
| Target Version | Collection Frequency |
|---|---|
| Apache Tomcat 7.x and earlier | Every 15 minutes |
This metric indicates the number of milliseconds that the JVM pent on the last garbage collection ended during the last collection interval.
| Target Version | Collection Frequency |
|---|---|
| Apache Tomcat 7.x and earlier | Every 15 minutes |
This metric indicates the number of milliseconds that the JVM has spent on all garbage collection runs during last collection interval.
| Target Version | Collection Frequency |
|---|---|
| Apache Tomcat 7.x and earlier | Every 15 minutes |
This metric category provides information about the JVM Heap Memory Pool memory usage metrics after garbage collection.
This metric displays the name of the garbage collector.
| Target Version | Collection Frequency |
|---|---|
| Apache Tomcat 7.x and earlier | Every 15 minutes |
This metric displays the name of the memory pool.
| Target Version | Collection Frequency |
|---|---|
| Apache Tomcat 7.x and earlier | Every 15 minutes |
This metric provides information about the metrics for memory usage in the JVM memory pools.
This metric displays the name of the JVM memory pool.
| Target Version | Collection Frequency |
|---|---|
| Apache Tomcat 7.x and earlier | Every 15 minutes |
This metric displays the type of the JVM memory pool.
| Target Version | Collection Frequency |
|---|---|
| Apache Tomcat 7.x and earlier | Every 15 minutes |
This metric displays the amount of memory currently used in the JVM memory pool.
| Target Version | Collection Frequency |
|---|---|
| Apache Tomcat 7.x and earlier | Every 15 minutes |
This metric category provides information about the JVM Threads metrics.
This metric displays the number of active threads running in the JVM.
| Target Version | Collection Frequency |
|---|---|
| Apache Tomcat 7.x and earlier | Every 15 minutes |
This metric displays the maximum number of active threads running at any time in the JVM.
| Target Version | Collection Frequency |
|---|---|
| Apache Tomcat 7.x and earlier | Every 15 minutes |
This metric category provides information about memory usage metrics.
This metric displays the amount of memory (in MB) used in the heap.
| Target Version | Collection Frequency |
|---|---|
| Apache Tomcat 7.x and earlier | Every 5 minutes |
This metric displays the maximum amount (in MB) of heap memory available for the JVM.
| Target Version | Collection Frequency |
|---|---|
| Apache Tomcat 7.x and earlier | Every 5 minutes |
This metric displays the amount of memory (in MB) being used in the non-heap.
| Target Version | Collection Frequency |
|---|---|
| Apache Tomcat 7.x and earlier | Every 5 minutes |
This metric displays the maximum amount of non-heap memory (in MB) available for the JVM.
| Target Version | Collection Frequency |
|---|---|
| Apache Tomcat 7.x and earlier | Every 5 minutes |
This metric displays the current heap memory percentage with respect to the maximum heap memory available.
| Target Version | Collection Frequency |
|---|---|
| Apache Tomcat 7.x and earlier | Every 5 minutes |
This metric category gives information about the memory load on the Apache Tomcat container.
This metric category contains attributes of each servlet loaded on the Apache Tomcat container.
This metric shows the average processing time (in milliseconds) since the last collection.
| Target Version | Collection Frequency |
|---|---|
| Apache Tomcat 7.x and earlier | Every 5 minutes |
This metric shows the maximum time taken (in milliseconds) for processing a request by the servlet.
| Target Version | Collection Frequency |
|---|---|
| Apache Tomcat 7.x and earlier | Every 5 minutes |
This metric shows the number of erroneous requests received by the servlet since startup.
| Target Version | Collection Frequency |
|---|---|
| Apache Tomcat 7.x and earlier | Every 5 minutes |
This metric shows the number of requests received by the servlet since startup.
| Target Version | Collection Frequency |
|---|---|
| Apache Tomcat 7.x and earlier | Every 5 minutes |
This metric shows the number of erroneous requests received by the servlet since the last collection.
| Target Version | Collection Frequency |
|---|---|
| Apache Tomcat 7.x and earlier | Every 5 minutes |
This metric shows the time taken for processing all the requests since the last collection.
| Target Version | Collection Frequency |
|---|---|
| Apache Tomcat 7.x and earlier | Every 5 minutes |
This metric category contains the statistics of the sessions managed by the Apache Tomcat container.
This metric shows the active number of sessions of each application since startup.
| Target Version | Collection Frequency |
|---|---|
| Apache Tomcat 7.x and earlier | Real-time only |
This metric shows the number of sessions rejected by each application since startup.
| Target Version | Collection Frequency |
|---|---|
| Apache Tomcat 7.x and earlier | Real-time only |
This metric shows the name of the deployed application.
| Target Version | Collection Frequency |
|---|---|
| Apache Tomcat 7.x and earlier | Real-time only |
This metric shows the number of new sessions created since startup.
| Target Version | Collection Frequency |
|---|---|
| Apache Tomcat 7.x and earlier | Real-time only |
This metric shows the number of sessions created since the last collection.
| Target Version | Collection Frequency |
|---|---|
| Apache Tomcat 7.x and earlier | Real-time only |
This metric category contains statistics on various thread pools used by the Apache Tomcat container.