Heroku Postgres:此连接已关闭 [英] Heroku Postgres: This connection has been closed
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问题描述
我开发了一个小型的Heroku + Grails + Postreg应用程序。它会在部署20分钟后正常工作,之后我总是得到:
I developed a small Heroku + Grails + Postreg application. It would work fine somewhat 20 minutes after deployment, after that I always get:
This connection has been closed.. Stacktrace follows: Heroku/myapp
- org.postgresql.util.PSQLException: This connection has been closed. Heroku/myapp
- at org.postgresql.jdbc2.AbstractJdbc2Connection.checkClosed(AbstractJdbc2Connection.java:837) Heroku/myapp
- at org.postgresql.jdbc2.AbstractJdbc2Connection.getAutoCommit(AbstractJdbc2Connection.java:798) Heroku/myapp
- at org.grails.datastore.gorm.GormStaticApi$_methodMissing_closure2.doCall(GormStaticApi.groovy:102) Heroku/myapp
- at com.myapp.WorkspaceController.list(WorkspaceController.groovy:18) Heroku/myapp
- at grails.plugin.cache.web.filter.PageFragmentCachingFilter.doFilter(PageFragmentCachingFilter.java:198) Heroku/myapp
- at grails.plugin.cache.web.filter.AbstractFilter.doFilter(AbstractFilter.java:63) Heroku/myapp
- at grails.plugin.springsecurity.web.filter.GrailsAnonymousAuthenticationFilter.doFilter(GrailsAnonymousAuthenticationFilter.java:53) Heroku/myapp
- at grails.plugin.springsecurity.web.authentication.RequestHolderAuthenticationFilter.doFilter(RequestHolderAuthenticationFilter.java:53) Heroku/myapp
- at grails.plugin.springsecurity.web.authentication.logout.MutableLogoutFilter.doFilter(MutableLogoutFilter.java:62) Heroku/myapp
- at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1145) Heroku/myapp
- at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:615) Heroku/myapp
- at java.lang.Thread.run(Thread.java:745) Heroku/myapp
- 2015-08-07 15:11:10,685 [http-nio-20850-exec-5] ERROR spi.SqlExceptionHelper - This connection has been closed. Heroku/myapp
- 2015-08-07 15:11:10,689 [http-nio-20850-exec-5] ERROR spi.SqlExceptionHelper - This connection has been closed. Heroku/myapp
- 2015-08-07 15:11:10,696 [http-nio-20850-exec-5] ERROR errors.GrailsExceptionResolver - PSQLException occurred when processing request: [GET] /api/users/21/workspaces Heroku/myapp
- This connection has been closed.. Stacktrace follows: Heroku/myapp
推荐答案
我自己解决了这个问题,把它添加到DataSource.groovy中:
I have resolved it myself by adding this to DataSource.groovy:
dataSource {
pooled = true
properties {
maxActive = -1
minEvictableIdleTimeMillis=1800000
timeBetweenEvictionRunsMillis=1800000
numTestsPerEvictionRun=3
testOnBorrow=true
testWhileIdle=true
testOnReturn=true
validationQuery="SELECT 1"
}
}
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