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.
This metric category contains the usage details of the application cache of the Apache Tomcat container.
Default Collection Interval — Every 5 Minutes
This metric category contains aggregated performance metrics spanning all the applications deloyed to the Apache Tomcat container.
Default Collection Interval — Every 5 Minutes
Table 1-2 All Applications Metrics
Metric | Description |
---|---|
All Applications - Rejected Sessions |
Number of sessions rejected by all the applications running on the Apache Tomcat container since last collection |
All Applications - Sessions Created |
Number of sessions created by all the applications running on the Apache Tomcat container since last collection |
All Applications - Total Active Sessions |
Active sessions of all the applications running on the Apache Tomcat container |
This metric category contains aggregated performance metrics spanning all the JSPs deployed to the Apache Tomcat container.
Default Collection Interval — Every 5 Minutes
This metric category contains aggregated performance metrics spanning all the Global Request Processors deployed to the Apache Tomcat container.
Default Collection Interval — Every 5 Minutes
Table 1-4 All Global Request Processors Metrics
Metric | Description |
---|---|
All Global Request Processors - Total Bytes Received |
Bytes received by all the request processors running on the Apache Tomcat container since last collection |
All Global Request Processors - Total Errors |
Error count on all the request processors running on the Apache Tomcat container since last collection |
All Global Request Processors - Total Requests |
Request count on all the request processors running on the Apache Tomcat container since last collection |
All Global Request Processors -Total Bytes Sent |
Bytes sent by all the request processors running on the Apache Tomcat container since last collection |
This metric category contains the metrics for each application deployed to the container.
Default Collection Interval — Every 5 minutes
Table 1-5 Applications Metrics
Metric | Description |
---|---|
Total Active Sessions |
Total number of active sessions since startup |
Total Rejected Sessions |
Total number of rejected sessions since startup |
Total Sessions Since Startup |
Total number of sessions created since startup |
Total Processing Time (ms) |
Total processing time (in milliseconds) since startup |
Total Request Count |
Total number of requests served since startup |
Processing Time Since Last collection (ms) |
Processing time (in milliseconds) since last collection |
Active Session Since last collection |
Number of active sessions created since last collection |
Sessions Created Since Last collection |
Number of new sessions created since last collection |
Rejected Sessions Since Last collection |
Number of sessions rejected since last collection |
Request Count Since Last collection |
Number of requests served since last collection |
Average Processing Time (ms) |
Average time taken (in milliseconds) for processing a request |
This metric category contains the attributes of all the data sources configured for the Apache Tomcat container.
Default Collection Interval — Every 5 Minutes
This metric category contains the attributes of each Global Request Processor configured on the Apache Tomcat container.
Default Collection Interval — Every 5 Minutes
Table 1-7 Global Request Processor Metrics
Metric | Description |
---|---|
Average Request Processing Time (ms) |
Average time taken (in milliseconds) for processing a request by the global request processor |
Bytes Received Since Last Collection |
Bytes received by each request processor since last collection |
Bytes Sent Since Last Collection |
Bytes sent by each request processor since last collection |
Errors Since Last Collection |
Error count of each request processor since last collection |
Request Processing Time (ms) |
Request processing time (in milliseconds) of each global request processor |
Requests Since Last Collection |
Number of requests served by each request processor since last collection |
This metric category contains the usage details of JSPs.
Default Collection Interval — Every 5 Minutes
This metric category gives information about the memory load on the Apache Tomcat container.
Default Collection Interval — Every 5 minutes
This metric category shows the status of the Apache Tomcat container.
Default Collection Interval — Every 5 Minutes
This metric category contains attributes of each servlet loaded on the Apache Tomcat container.
Default Collection Interval — Every 5 minutes
Metric | Description |
---|---|
Maximum Servlet Request Processing Time (ms) |
Maximum time taken (in milliseconds) for processing a request by the servlet |
Total Servlet Request Processing Time (ms) |
Total time taken (in milliseconds) for processing all the requests by the servlet |
Number Of Requests Since Startup |
Number of requests received by the servlet since startup |
Number Of Errors Since Startup |
Number of erroneous requests received by the servlet since startup |
Processing Time Since Last Collection |
Time taken for processing all the requests since last collection |
Requests Count Since Last Collection |
Number of requests served by the servlet since last collection |
Average Processing Time (ms) |
Average processing time (in milliseconds) since last collection |
Number Of Servlet Errors Since Last Collection |
Number of erroneous requests received by the servlet since last collection |
This metric category contains the statistics of the sessions managed by the Apache Tomcat container.
Default Collection Interval — Real-Time Only
Table 1-12 Session Manager Metrics
Metric | Description |
---|---|
Active Sessions Since Startup |
Active number of sessions of each application since startup |
Rejected Sessions Since Startup |
Number of sessions rejected by each application since startup |
Application Name |
Name of the deployed application |
Sessions Created Since Startup |
Number of new sessions created since startup |
Sessions Created Since Last Collection |
Number of sessions created since last collection |
Active Sessions Since Last Collection |
Number of active sessions since last collection |
Rejected Sessions Since Last Collection |
Number of sessions rejected since last collection |