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Connection Pools: Apache CommonsConnection Pools: Apache Commons
Connection Pools: Apache Commons

Connection Pools: Apache Commons

Application method of pooling and sharing multiple connections to a database.

Extension
Free trialDocumentation
Built-in overview dashboard to quickly access your Apache Commons Connection Pools metricsList all of your connection pools and filter them by name, process name or host name to easily find the relevant poolsAnalyze and monitor the individual performance of each pool with the included Unified Analysis screens
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Overview

Several built-in OneAgent extensions provide insight into connection pool performance and issues such as connection leaks. The extensions cover the following technologies: Apache Tomcat, Oracle WebLogic, IBM WebSphere Application Server, IBM WebSphere Liberty, Red Hat JBoss and Apache Commons.

Use cases

This extension collects connection pool performance, usage and availability metrics for Apache Commons

Get started

For more information on the installation and configuration, please see Connection Pools: Apache Commons extension in the Dynatrace Documentation.

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Feature sets

Below is a complete list of the feature sets provided in this version. To ensure a good fit for your needs, individual feature sets can be activated and deactivated by your administrator during configuration.

Feature setsNumber of metrics included
Metric nameMetric keyDescriptionUnit
Max borrow wait durationapache.commons.connectionPool.maxBorrowWaitDurationGets the maximum time a thread has waited to borrow objects from the poolMilliSecond
Max wait durationapache.commons.connectionPool.maxWaitDurationGets the maximum duration the borrowObject() method should block before throwing an exception when the pool is exhausted and getBlockWhenExhausted() is true. When less than 0, the borrowObject() method may block indefinitelyMilliSecond
Mean active durationapache.commons.connectionPool.meanActiveDurationGets the mean time objects are active for based on the last MEAN_TIMING_STATS_CACHE_SIZE objects returned to the poolMilliSecond
Mean borrowed wait durationapache.commons.connectionPool.meanBorrowWaitDurationGets the mean time threads wait to borrow an object based on the last MEAN_TIMING_STATS_CACHE_SIZE objects borrowed from the poolMilliSecond
Mean idle durationapache.commons.connectionPool.meanIdleDurationGets the mean time objects are idle for based on the last MEAN_TIMING_STATS_CACHE_SIZE objects borrowed from the poolMilliSecond
Min evictable idle durationapache.commons.connectionPool.minEvictableIdleDurationGets the minimum amount of time an object may sit idle in the pool before it is eligible for eviction by the idle object evictor. When non-positive, no objects will be evicted from the pool due to idle time alone.MilliSecond
Metric nameMetric keyDescriptionUnit
Borrowed countapache.commons.connectionPool.borrowedCount.countGets the total number of objects successfully borrowed from the poolCount
Created countapache.commons.connectionPool.createdCount.countGets the total number of objects created for this poolCount
Destroyed countapache.commons.connectionPool.destroyedCount.countGets the total number of objects destroyed by this poolCount
Max totalapache.commons.connectionPool.maxTotalGets the maximum number of objects that can be allocated by the pool (checked out to clients, or idle awaiting checkout) at a given time. When negative, there is no limit to the number of objects that can be managed by the pool at one timeCount
Idle countapache.commons.connectionPool.numIdleGets the number of instances currently idle in this poolCount
Active countapache.commons.connectionPool.numActiveGets the number of instances currently borrowed from this pool. Returns a negative value if this information is not availableCount
Waiters countapache.commons.connectionPool.numWaitersGets an estimate of the number of threads currently blocked waiting for an object from the poolCount
Returned countapache.commons.connectionPool.returnedCount.countGets the total number of objects returned to this pool over the lifetime of the pool. This excludes attempts to return the same object multiple timesCount

Related to Connection Pools: Apache Commons

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Full version history

To have more information on how to install the downloaded package, please follow the instructions on this page.
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Full version history

New in this version:

  • Added keyword key value pairs to extension

Full version history

  • New Platform/Gen3 dashboard bundled with extension
  • Added DQL support for Platform/Gen3 screens
  • Enriched entities with dt.security_context attribute

Full version history

First release of the JMX-based extension for monitoring Apache Commons connection pool:

  • Monitor 14 metrics in 2 feature sets
  • Added topology for connection pools
  • Added UA screens for connection pools and PGI injection
  • Added overview dashboard
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