# Too many connections in 8.0.25-15 Percona Server (GPL), Release 15, Revision a558ec2

**URL:** <https://forums.percona.com/t/too-many-connections-in-8-0-25-15-percona-server-gpl-release-15-revision-a558ec2/12915>\
**Category:** Percona Server for MySQL 8.0\
**Tags:** community, mysql, percona, new-release\
**Created:** [November 9, 2021, 9:06am UTC](https://forums.percona.com/t/too-many-connections-in-8-0-25-15-percona-server-gpl-release-15-revision-a558ec2/12915 "2021-11-09T09:06:02Z")\
**Posts on this page:** 2\
**Page:** 1

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**Author:** ![peng19832](https://avatars.discourse-cdn.com/v4/letter/p/7993a0/32.png) [@peng19832](https://forums.percona.com/u/peng19832)\
**Post date:** [November 9, 2021, 9:06am UTC](https://forums.percona.com/t/too-many-connections-in-8-0-25-15-percona-server-gpl-release-15-revision-a558ec2/12915/1 "2021-11-09T09:06:02Z")

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Why do I have too many connections exception when I turn on the thread pool?  
java app error:

 ![cff199b25706be75b7cab09999549f4](https://us1.discourse-cdn.com/flex019/uploads/percona1/original/2X/4/4585be54aa5db9c1445705fd94f39084be4236e5.png)

mysql error log：  
 ![image](https://us1.discourse-cdn.com/flex019/uploads/percona1/original/2X/2/2ac79f607a5686574c2e734f93c7c0c354e4aaf2.png)

percona server mysql config:  
 ![image](https://us1.discourse-cdn.com/flex019/uploads/percona1/original/2X/4/463c8f91ae2a9e980dd1dbf875c6b6a22c721c29.png)  
 ![image](https://us1.discourse-cdn.com/flex019/uploads/percona1/original/2X/3/365bb55d2915ccea4b01048c30bd6d30537f6309.png)  
 ![image](https://us1.discourse-cdn.com/flex019/uploads/percona1/original/2X/4/4664f083400300e2db15f3b330ac40c3dd7b7a09.png)

show processlist:  
 ![image](https://us1.discourse-cdn.com/flex019/uploads/percona1/original/2X/d/df2e84a2253ca50cfd3e1c0dce1eb3541b4b2fb3.png)

mysql ulimit:  
 ![image](https://us1.discourse-cdn.com/flex019/uploads/percona1/original/2X/8/89f348d3d07a9b1a5dc3fdbf573ebe891cdfce76.png)

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<div class="post-metadata">

**Author:** ![peng19832](https://avatars.discourse-cdn.com/v4/letter/p/7993a0/32.png) [@peng19832](https://forums.percona.com/u/peng19832)\
**Post date:** [January 11, 2022, 1:15am UTC](https://forums.percona.com/t/too-many-connections-in-8-0-25-15-percona-server-gpl-release-15-revision-a558ec2/12915/2 "2022-01-11T01:15:32Z")

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When this exception occurs, it will cause the app to fail to create a new connection