我遇到的问题与（playframework 2.0 - exceeded max_user_connections on database evolutions?）完全相同，这次只是本地postgres安装。我有一个示例应用程序，我在hub http://git.io/CdEntA上发布了。
我尝试使用
在本地运行它sbt stage
target/start -DapplyEvolutions.default=true -Ddb.default.driver=org.postgresql.Driver - Ddb.default.url="jdbc:postgresql://localhost:5432/test?user=myuser"
当我启动http://localhost:9000时，我在控制台上看到的只是......
[error] c.j.b.h.AbstractConnectionHook - Failed to acquire connection Sleeping for 1000ms and trying again. Attempts left: 10. Exception: null [error] c.j.b.h.AbstractConnectionHook - Failed to acquire connection Sleeping for 1000ms and trying again. Attempts left: 10. Exception: null [info] play - Application started (Prod) [info] play - Listening for HTTP on port 9000... [error] c.j.b.h.AbstractConnectionHook - Failed to acquire connection Sleeping for 1000ms and trying again. Attempts left: 9. Exception: null [error] c.j.b.h.AbstractConnectionHook - Failed to acquire connection Sleeping for 1000ms and trying again. Attempts left: 8. Exception: null [error] c.j.b.h.AbstractConnectionHook - Failed to acquire connection Sleeping for 1000ms and trying again. Attempts left: 7. Exception: null [error] c.j.b.h.AbstractConnectionHook - Failed to acquire connection Sleeping for 1000ms and trying again. Attempts left: 6. Exception: null [error] c.j.b.h.AbstractConnectionHook - Failed to acquire connection Sleeping for 1000ms and trying again. Attempts left: 5. Exception: null [error] c.j.b.h.AbstractConnectionHook - Failed to acquire connection Sleeping for 1000ms and trying again. Attempts left: 4. Exception: null [error] c.j.b.h.AbstractConnectionHook - Failed to acquire connection Sleeping for 1000ms and trying again. Attempts left: 3. Exception: null [error] c.j.b.h.AbstractConnectionHook - Failed to acquire connection Sleeping for 1000ms and trying again. Attempts left: 2. Exception: null [error] c.j.b.h.AbstractConnectionHook - Failed to acquire connection Sleeping for 1000ms and trying again. Attempts left: 1. Exception: null [error] c.j.b.PoolWatchThread - Error in trying to obtain a connection. Retrying in 1000ms org.postgresql.util.PSQLException: FATAL: sorry, too many clients already at org.postgresql.core.v3.ConnectionFactoryImpl.doAuthentication(ConnectionFactoryImpl.java:293) ~[postgresql-9.1-901-1.jdbc4.jar:na]
当我查看数据库时，我发现所有连接实际上都被该过程耗尽。
非常感谢任何帮助。
感谢。
答案 0 :(得分：2)
尝试减少播放应用使用的连接数。
这是仅使用5个连接的配置。
db.default.partitionCount=1
db.default.maxConnectionsPerPartition=5
db.default.minConnectionsPerPartition=5
基本上连接数为partitionCount x ConnectionsPerPartition
答案 1 :(得分：2)
我相信您的问题是您没有覆盖db.default.user配置参数，因此它使用sa值。只需注释掉conf/application.conf文件中的以下行：
db.default.user=sa
一旦我这样做并重新运行sbt stage，那么它对我来说很好。