java 在 Wildfly 数据源中空闲超时后数据库连接未关闭
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时间：2020-11-02 13:56:22 来源:igfitidea点击:
Database connections not closed after idle-timeout in wildfly Datasource
提问by Salman A. Kagzi
I have an application running under wildfly 8.1 The database connections used in the applications are taken from a Datasource defined in standalone.xml file.
我有一个在 wildfly 8.1 下运行的应用程序 应用程序中使用的数据库连接取自 standalone.xml 文件中定义的数据源。
Problem: I don't know why but the Connection from the Pool never goes Idle and are released. Eventually the Pool gets filled will all active Connection and application starts throwing javax.resource.ResourceException: IJ000453: Unable to get managed connection for java:/bo/datasource
问题：我不知道为什么，但是来自池的连接永远不会空闲并被释放。最终池被填满将所有活动的连接和应用程序开始抛出javax.resource.ResourceException: IJ000453: Unable to get managed connection for java:/bo/datasource
At the same time when I look at the database, most of the Connections are shown to be idle. (Configuration and result output below)
同时我查看数据库时，大部分Connections都显示为空闲。（配置和结果输出如下）
I have been at this for a week now and have not been able to figure out root cause of this problem. I have also checked all places where a connection is created and have made sure that they are closed afterwards.
我已经在这一个星期了，一直无法找出这个问题的根本原因。我还检查了所有创建连接的地方，并确保它们之后关闭。
What are the other possible places I should be looking into? Or is this a bug (or known issues with Wildfly datasource)?
我应该研究哪些其他可能的地方？或者这是一个错误（或 Wildfly 数据源的已知问题）？
Wildfly datasource definition:
Wildfly 数据源定义：
<subsystem xmlns="urn:jboss:domain:datasources:2.0">
<datasources>
<datasource jndi-name="java:/db/pool" pool-name="DBSource" enabled="true">
<connection-url>jdbc:postgresql://<IP>:5432/DB</connection-url>
<driver>postgres</driver>
<new-connection-sql>select 1</new-connection-sql>
<pool>
<min-pool-size>5</min-pool-size>
<max-pool-size>100</max-pool-size>
</pool>
<security>
<user-name>user</user-name>
<password>password</password>
</security>
<validation>
<check-valid-connection-sql>select 1</check-valid-connection-sql>
<background-validation>true</background-validation>
<background-validation-millis>60000</background-validation-millis>
</validation>
<timeout>
<idle-timeout-minutes>30</idle-timeout-minutes>
</timeout>
<statement>
<track-statements>true</track-statements>
</statement>
</datasource>
<drivers>
<driver name="h2" module="com.h2database.h2">
<xa-datasource-class>org.h2.jdbcx.JdbcDataSource</xa-datasource-class>
</driver>
<driver name="postgres" module="org.postgres">
<driver-class>org.postgresql.Driver</driver-class>
</driver>
</drivers>
</datasources>
</subsystem>
Wildfly datasource pool information:
Wildfly 数据源池信息：
Command:
命令：
/subsystem=datasources/data-source=DBSource/statistics=pool:read-resource(recursive=false,proxies=false,include-runtime=true,include-defaults=true)
Response:
回复：
{
"outcome" => "success",
"result" => {
"ActiveCount" => "98",
"AvailableCount" => "55",
"AverageBlockingTime" => "1",
"AverageCreationTime" => "125",
"AverageGetTime" => "27",
"BlockingFailureCount" => "0",
"CreatedCount" => "98",
"DestroyedCount" => "0",
"IdleCount" => "3",
"InUseCount" => "95",
"MaxCreationTime" => "1382",
"MaxGetTime" => "1382",
"MaxUsedCount" => "97",
"MaxWaitCount" => "0",
"MaxWaitTime" => "1",
"TimedOut" => "0",
"TotalBlockingTime" => "71",
"TotalCreationTime" => "12340",
"TotalGetTime" => "12696",
"WaitCount" => "0"
},
"response-headers" => {"process-state" => "reload-required"}
}
PostgreSQL Query Status:
PostgreSQL 查询状态：
Command:
命令：
SELECT datname, pid, usename, waiting, state, (now()-query_start) AS since, (now() - state_change) AS since2, (now() - backend_start) as since3, (now() - xact_start) as since4, query FROM pg_stat_activity ORDER BY datname, state, usename, waiting, query, since, pid;
Response:
回复：
datname | pid | usename | waiting | state | since | since2 | since3 | since4 |
---------------+------+------------+---------+---------------------+-----------------+------------------+-----------------+-----------------+-----------------------------------------------------------------------------------------------------------------------------------
BOIEDUDBV13R1 | 4871 | blueoptima | f | active | 00:00:00.176188 | 00:00:00.176179 | 01:37:21.045722 | 00:02:17.212346 | Query-1
BOIEDUDBV13R1 | 4568 | blueoptima | f | active | 00:18:33.035399 | 00:18:33.035395 | 04:25:11.916388 | 00:18:33.473355 | Query-2
BOIEDUDBV13R1 | 4564 | blueoptima | f | active | 00:10:10.599237 | 00:10:10.599232 | 04:25:11.943752 | 00:10:10.915048 | Query-3
BOIEDUDBV13R1 | 4498 | blueoptima | f | active | 00:03:25.861284 | 00:03:25.86128 | 05:09:51.735583 | 00:03:25.861823 | Query-4
BOIEDUDBV13R1 | 4535 | blueoptima | f | active | 00:01:16.612227 | 00:01:16.612222 | 04:34:01.668772 | 00:01:16.614149 | Query-5
BOIEDUDBV13R1 | 4534 | blueoptima | f | idle | 00:00:04.72429 | 00:00:04.683504 | 04:35:21.78966 | | COMMIT
BOIEDUDBV13R1 | 4519 | blueoptima | f | idle | 00:00:12.950041 | 00:00:12.913566 | 04:50:53.698877 | | COMMIT
BOIEDUDBV13R1 | 4438 | blueoptima | f | idle | 00:00:25.82585 | 00:00:25.81036 | 05:34:41.528853 | | COMMIT
BOIEDUDBV13R1 | 4425 | blueoptima | f | idle | 00:09:12.999537 | 00:09:12.9731 | 05:41:51.806148 | | COMMIT
BOIEDUDBV13R1 | 4488 | blueoptima | f | idle | 00:56:04.709316 | 00:56:04.686439 | 05:14:45.445165 | | COMMIT
BOIEDUDBV13R1 | 4501 | blueoptima | f | idle | 00:57:00.615919 | 00:57:00.61589 | 05:06:51.861328 | | COMMIT
BOIEDUDBV13R1 | 4466 | blueoptima | f | idle | 04:11:54.8669 | 04:11:54.516947 | 05:25:03.079741 | | COMMIT
BOIEDUDBV13R1 | 4419 | blueoptima | f | idle | 04:51:03.786294 | 04:51:03.749462 | 05:41:51.814577 | | COMMIT
BOIEDUDBV13R1 | 4340 | blueoptima | f | idle | 04:52:19.772533 | 04:52:19.720537 | 06:31:51.758733 | | COMMIT
BOIEDUDBV13R1 | 4502 | blueoptima | f | idle | 04:54:49.892553 | 04:54:49.85151 | 05:06:51.439101 | | COMMIT
BOIEDUDBV13R1 | 4406 | blueoptima | f | idle | 05:09:20.675009 | 05:09:20.655038 | 06:00:50.160594 | | COMMIT
BOIEDUDBV13R1 | 4489 | blueoptima | f | idle | 05:09:54.785706 | 05:09:54.751723 | 05:14:45.358108 | | COMMIT
BOIEDUDBV13R1 | 4449 | blueoptima | f | idle | 05:16:58.881682 | 05:16:58.88074 | 05:26:50.728973 | | COMMIT
BOIEDUDBV13R1 | 4450 | blueoptima | f | idle | 05:17:23.727614 | 05:17:23.726158 | 05:25:55.116657 | | COMMIT
BOIEDUDBV13R1 | 4465 | blueoptima | f | idle | 05:22:32.475769 | 05:22:32.470301 | 05:25:03.230671 | | COMMIT
BOIEDUDBV13R1 | 4421 | blueoptima | f | idle | 05:25:03.596961 | 05:25:03.596942 | 05:41:51.81487 | | COMMIT
BOIEDUDBV13R1 | 4451 | blueoptima | f | idle | 05:25:29.373092 | 05:25:29.364467 | 05:25:52.433709 | | COMMIT
BOIEDUDBV13R1 | 4448 | blueoptima | f | idle | 05:25:58.729039 | 05:25:58.724453 | 05:26:50.898318 | | COMMIT
BOIEDUDBV13R1 | 4423 | blueoptima | f | idle | 05:26:13.2656 | 05:26:13.263502 | 05:41:51.814528 | | COMMIT
BOIEDUDBV13R1 | 4426 | blueoptima | f | idle | 05:26:58.773981 | 05:26:58.765174 | 05:41:51.179333 | | COMMIT
BOIEDUDBV13R1 | 4415 | blueoptima | f | idle | 05:29:07.123798 | 05:29:07.115682 | 05:47:36.740939 | | COMMIT
BOIEDUDBV13R1 | 4394 | blueoptima | f | idle | 05:42:02.02632 | 05:42:01.994772 | 06:05:54.290575 | | COMMIT
BOIEDUDBV13R1 | 4416 | blueoptima | f | idle | 05:45:52.799303 | 05:45:52.793004 | 05:47:36.701474 | | COMMIT
BOIEDUDBV13R1 | 4408 | blueoptima | f | idle | 05:48:02.635413 | 05:48:02.630767 | 05:54:49.133404 | | COMMIT
BOIEDUDBV13R1 | 4410 | blueoptima | f | idle | 05:49:09.631417 | 05:49:09.624039 | 05:49:47.440347 | | COMMIT
BOIEDUDBV13R1 | 4392 | blueoptima | f | idle | 05:49:45.136111 | 05:49:45.124627 | 06:05:54.52666 | | COMMIT
BOIEDUDBV13R1 | 4411 | blueoptima | f | idle | 05:49:45.208436 | 05:49:45.207393 | 05:49:46.326729 | | COMMIT
BOIEDUDBV13R1 | 4399 | blueoptima | f | idle | 05:50:19.476105 | 05:50:19.465746 | 06:04:53.509647 | | COMMIT
BOIEDUDBV13R1 | 4383 | blueoptima | f | idle | 05:54:04.625364 | 05:54:04.56991 | 06:09:43.004602 | | COMMIT
BOIEDUDBV13R1 | 4382 | blueoptima | f | idle | 05:58:29.615594 | 05:58:29.608542 | 06:09:43.496538 | | COMMIT
BOIEDUDBV13R1 | 4404 | blueoptima | f | idle | 06:00:48.381014 | 06:00:48.379175 | 06:00:50.352202 | | COMMIT
BOIEDUDBV13R1 | 4393 | blueoptima | f | idle | 06:01:49.740445 | 06:01:49.733278 | 06:05:54.468595 | | COMMIT
BOIEDUDBV13R1 | 4379 | blueoptima | f | idle | 06:02:12.00668 | 06:02:12.004878 | 06:11:37.044413 | | COMMIT
BOIEDUDBV13R1 | 4396 | blueoptima | f | idle | 06:02:25.216415 | 06:02:25.202565 | 06:05:10.411017 | | COMMIT
BOIEDUDBV13R1 | 4390 | blueoptima | f | idle | 06:03:48.651868 | 06:03:48.647211 | 06:06:05.443 | | COMMIT
BOIEDUDBV13R1 | 4375 | blueoptima | f | idle | 06:04:51.760968 | 06:04:51.732155 | 06:11:37.545217 | | COMMIT
BOIEDUDBV13R1 | 4353 | blueoptima | f | idle | 06:04:53.302492 | 06:04:53.252345 | 06:25:54.61252 | | COMMIT
BOIEDUDBV13R1 | 4372 | blueoptima | f | idle | 06:05:08.158286 | 06:05:08.137553 | 06:11:49.797186 | | COMMIT
BOIEDUDBV13R1 | 4397 | blueoptima | f | idle | 06:05:08.578854 | 06:05:08.544941 | 06:05:10.298185 | | COMMIT
BOIEDUDBV13R1 | 4377 | blueoptima | f | idle | 06:08:34.443118 | 06:08:34.435299 | 06:11:37.432426 | | COMMIT
BOIEDUDBV13R1 | 4378 | blueoptima | f | idle | 06:11:35.00451 | 06:11:34.946687 | 06:11:37.293523 | | COMMIT
BOIEDUDBV13R1 | 4354 | blueoptima | f | idle | 06:12:01.816625 | 06:12:01.812458 | 06:25:50.247498 | | COMMIT
BOIEDUDBV13R1 | 4344 | blueoptima | f | idle | 06:21:56.439509 | 06:21:56.438739 | 06:31:30.8968 | | COMMIT
BOIEDUDBV13R1 | 4350 | blueoptima | f | idle | 06:22:20.125071 | 06:22:20.11839 | 06:29:37.465565 | | COMMIT
BOIEDUDBV13R1 | 4343 | blueoptima | f | idle | 06:25:59.198819 | 06:25:59.197962 | 06:31:30.901491 | | COMMIT
BOIEDUDBV13R1 | 4351 | blueoptima | f | idle | 06:27:23.950853 | 06:27:23.950081 | 06:29:37.456841 | | COMMIT
BOIEDUDBV13R1 | 4348 | blueoptima | f | idle | 06:27:36.13192 | 06:27:36.131014 | 06:29:37.513979 | | COMMIT
BOIEDUDBV13R1 | 4349 | blueoptima | f | idle | 06:27:42.332901 | 06:27:42.331326 | 06:29:37.491039 | | COMMIT
BOIEDUDBV13R1 | 4352 | blueoptima | f | idle | 06:27:54.031819 | 06:27:54.02966 | 06:29:37.265193 | | COMMIT
BOIEDUDBV13R1 | 4341 | blueoptima | f | idle | 06:28:14.444963 | 06:28:14.444105 | 06:31:31.858728 | | COMMIT
BOIEDUDBV13R1 | 4337 | blueoptima | f | idle | 06:29:20.216685 | 06:29:20.215749 | 06:33:13.450564 | | COMMIT
BOIEDUDBV13R1 | 4346 | blueoptima | f | idle | 06:29:28.524638 | 06:29:28.523906 | 06:30:51.904609 | | COMMIT
BOIEDUDBV13R1 | 4342 | blueoptima | f | idle | 06:29:58.433751 | 06:29:58.432939 | 06:31:31.204896 | | COMMIT
BOIEDUDBV13R1 | 4345 | blueoptima | f | idle | 06:30:28.819691 | 06:30:28.818747 | 06:31:26.849458 | | COMMIT
BOIEDUDBV13R1 | 4355 | blueoptima | f | idle | 06:07:48.953452 | 06:07:48.947655 | 06:25:50.216644 | | INSERT
BOIEDUDBV13R1 | 4409 | blueoptima | f | idle | 05:49:25.452863 | 05:49:25.435483 | 05:49:49.502884 | | INSERT-1
BOIEDUDBV13R1 | 4424 | blueoptima | f | idle | 05:35:44.413808 | 05:35:44.381036 | 05:41:51.814529 | | INSERT-2
BOIEDUDBV13R1 | 4398 | blueoptima | f | idle | 05:36:00.621836 | 05:36:00.598047 | 06:04:53.758915 | | INSERT-3
BOIEDUDBV13R1 | 4417 | blueoptima | f | idle | 05:46:18.096148 | 05:46:18.07272 | 05:47:36.576677 | | INSERT-4
BOIEDUDBV13R1 | 4395 | blueoptima | f | idle | 05:50:44.112353 | 05:50:44.074542 | 06:05:10.557776 | | INSERT-5
BOIEDUDBV13R1 | 4388 | blueoptima | f | idle | 06:05:57.843694 | 06:05:57.832724 | 06:06:06.177483 | | INSERT-6
BOIEDUDBV13R1 | 4339 | blueoptima | f | idle | 06:17:57.460712 | 06:17:57.459716 | 06:33:12.657432 | | INSERT-7
BOIEDUDBV13R1 | 4487 | blueoptima | f | idle | 00:00:15.552081 | 00:00:15.552035 | 05:15:49.047066 | | select 1
BOIEDUDBV13R1 | 4565 | blueoptima | f | idle | 00:00:15.553093 | 00:00:15.553037 | 04:25:11.942656 | | select 1
BOIEDUDBV13R1 | 4420 | blueoptima | f | idle | 00:00:15.554958 | 00:00:15.55493 | 05:41:51.814789 | | select 1
BOIEDUDBV13R1 | 4402 | blueoptima | f | idle | 02:16:15.871078 | 02:16:15.871048 | 06:00:52.663433 | | select 1
BOIEDUDBV13R1 | 4384 | blueoptima | f | idle | 05:38:17.430042 | 05:38:17.43002 | 06:09:42.969186 | | select 1
BOIEDUDBV13R1 | 4412 | blueoptima | f | idle | 05:46:47.263716 | 05:46:47.263518 | 05:49:45.575215 | | SELECT DISTINCT column FROM table
BOIEDUDBV13R1 | 4414 | blueoptima | f | idle | 05:49:41.773012 | 05:49:41.772712 | 05:49:45.435716 | | SELECT DISTINCT column FROM table
BOIEDUDBV13R1 | 4405 | blueoptima | f | idle | 05:51:32.2168 | 05:51:32.216636 | 06:00:50.160309 | | SELECT DISTINCT column FROM table
BOIEDUDBV13R1 | 4400 | blueoptima | f | idle | 05:52:44.966233 | 05:52:44.965626 | 06:02:28.601245 | | SELECT DISTINCT column FROM table
BOIEDUDBV13R1 | 4401 | blueoptima | f | idle | 06:01:07.430069 | 06:01:07.429643 | 06:02:28.599077 | | SELECT DISTINCT column FROM table
BOIEDUDBV13R1 | 4389 | blueoptima | f | idle | 06:05:52.187161 | 06:05:52.187081 | 06:06:05.801733 | | SELECT DISTINCT column FROM table
BOIEDUDBV13R1 | 4376 | blueoptima | f | idle | 06:06:04.447668 | 06:06:04.447527 | 06:11:37.448819 | | SELECT DISTINCT column FROM table
BOIEDUDBV13R1 | 4422 | blueoptima | f | idle | 04:48:59.446162 | 04:48:59.446103 | 05:41:51.814892 | | SELECT
BOIEDUDBV13R1 | 4385 | blueoptima | f | idle | 05:28:13.718473 | 05:28:13.643871 | 06:09:42.799857 | | SELECT
BOIEDUDBV13R1 | 4536 | blueoptima | f | idle | 04:29:42.4528 | 04:29:42.429103 | 04:34:01.664679 | | SELECT
BOIEDUDBV13R1 | 4381 | blueoptima | f | idle | 06:05:51.131506 | 06:05:51.131429 | 06:11:35.758195 | | SELECT
BOIEDUDBV13R1 | 4338 | blueoptima | f | idle | 06:28:31.658157 | 06:28:31.658105 | 06:33:12.953437 | | SELECT
BOIEDUDBV13R1 | 4566 | blueoptima | f | idle | 00:00:25.8479 | 00:00:25.835864 | 04:25:11.94033 | | UPDATE-1
BOIEDUDBV13R1 | 4391 | blueoptima | f | idle | 03:52:25.755736 | 03:52:25.73571 | 06:06:05.300207 | | UPDATE-2
BOIEDUDBV13R1 | 4512 | blueoptima | f | idle | 04:56:03.247543 | 04:56:03.232923 | 04:56:44.188961 | | UPDATE-3
BOIEDUDBV13R1 | 4511 | blueoptima | f | idle | 04:56:34.70146 | 04:56:34.691303 | 04:57:00.191291 | | UPDATE-4
BOIEDUDBV13R1 | 4347 | blueoptima | f | idle | 05:32:30.754975 | 05:32:30.732481 | 06:29:46.312612 | | UPDATE-5
BOIEDUDBV13R1 | 4439 | blueoptima | f | idle | 05:32:55.742867 | 05:32:55.741539 | 05:34:41.519884 | | UPDATE-6
BOIEDUDBV13R1 | 4407 | blueoptima | f | idle | 05:37:36.461115 | 05:37:36.451762 | 05:54:49.133383 | | UPDATE-7
BOIEDUDBV13R1 | 4371 | blueoptima | f | idle | 05:53:02.986092 | 05:53:02.830753 | 06:11:55.240785 | | UPDATE-8
BOIEDUDBV13R1 | 4403 | blueoptima | f | idle | 05:59:57.870442 | 05:59:57.865218 | 06:00:52.646267 | | UPDATE-9
BOIEDUDBV13R1 | 4356 | blueoptima | f | idle | 06:09:18.560294 | 06:09:18.559498 | 06:25:50.216061 | | UPDATE-10
BOIEDUDBV13R1 | 4380 | blueoptima | f | idle | 06:09:38.951985 | 06:09:38.924395 | 06:11:36.494018 | | UPDATE-11
BOIEDUDBV13R1 | 4863 | postgres | f | idle | 01:21:12.135105 | 01:21:12.052383 | 02:01:39.736693 | | select a
| | | | | | | | | ;
BOIEDUDBV13R1 | 4988 | postgres | f | idle | 00:11:16.272964 | 00:11:16.145621 | 00:13:26.234094 | | select b
| | | | | | | | |
BOIEDUDBV13R1 | 4437 | blueoptima | f | idle in transaction | 05:29:11.490837 | 05:29:11.490825 | 05:34:41.52984 | 05:29:11.490949 | select 1
BOIEDUDBV13R1 | 4413 | blueoptima | f | idle in transaction | 05:36:47.417173 | 05:36:47.417148 | 05:49:45.5742 | 05:36:47.417257 | select 1
BOIEDUDBV13R1 | 4567 | blueoptima | f | idle in transaction | 00:49:38.844059 | 00:49:38.844027 | 04:25:11.936358 | 00:49:40.950629 | Query
(100 rows)
采纳答案by Salman A. Kagzi
It turns out that Hibernate was holding connection and not releasing them to the Pool. Irrespective of the fact that we are using thread local context. But after adding <property name="hibernate.connection.release_mode">after_transaction</property>to the hibernate config. The problem got solved.
事实证明，Hibernate 正在保持连接而不是将它们释放到池中。不管我们使用线程本地上下文这一事实。但是在添加<property name="hibernate.connection.release_mode">after_transaction</property>到休眠配置之后。问题就解决了。
PS:I still dont understand why we need to define this explicitly and why the auto release_mode would not release the connection once the session is closed.
PS：我仍然不明白为什么我们需要明确定义这个以及为什么一旦会话关闭，自动 release_mode 不会释放连接。
