Postgres 致命错误: 对不起, 已经有太多的客户 (pgjdbc: autodetected server-encoding to be GB2312, if the message is n

ERROR com.zgph.ComputingCommandRunner - Failed to obtain JDBC Connection; nested exception is org.postgresql.util.PSQLException: 致命错误: 对不起, 已经有太多的客户 (pgjdbc: autodetected server-encoding to be GB2312, if the message is not readable, please check database logs and/or host, port, dbname, user, password, pg_hba.conf)
org.springframework.jdbc.CannotGetJdbcConnectionException: Failed to obtain JDBC Connection; nested exception is org.postgresql.util.PSQLException: 致命错误: 对不起, 已经有太多的客户 (pgjdbc: autodetected server-encoding to be GB2312, if the message is not readable, please check database logs and/or host, port, dbname, user, password, pg_hba.conf)
	at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:81) ~[spring-jdbc-5.1.5.RELEASE.jar:5.1.5.RELEASE]
	at org.springframework.jdbc.core.JdbcTemplate.execute(JdbcTemplate.java:371) ~[spring-jdbc-5.1.5.RELEASE.jar:5.1.5.RELEASE]
	at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:452) ~[spring-jdbc-5.1.5.RELEASE.jar:5.1.5.RELEASE]
	at org.springframework.jdbc.core.JdbcTemplate.query(JdbcTemplate.java:462) ~[spring-jdbc-5.1.5.RELEASE.jar:5.1.5.RELEASE]
	at org.springframework.jdbc.core.JdbcTemplate.queryForList(JdbcTemplate.java:490) ~[spring-jdbc-5.1.5.RELEASE.jar:5.1.5.RELEASE]
	at com.zgph.base.datasource.source.ComputeringSourceDatasourceJdbcUtils.executeSelect(ComputeringSourceDatasourceJdbcUtils.java:42) ~[classes/:?]
	at com.zgph.exec.TaskExecHandler.exec(TaskExecHandler.java:133) ~[classes/:?]
	at com.zgph.ComputingCommandRunner.lambda$autoExec$0(ComputingCommandRunner.java:82) ~[classes/:?]
	at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:511) [?:1.8.0_191]
	at java.util.concurrent.FutureTask.run$$$capture(FutureTask.java:266) [?:1.8.0_191]
	at java.util.concurrent.FutureTask.run(FutureTask.java) [?:1.8.0_191]
	at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149) [?:1.8.0_191]
	at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624) [?:1.8.0_191]
	at java.lang.Thread.run(Thread.java:748) [?:1.8.0_191]
Caused by: org.postgresql.util.PSQLException: 致命错误: 对不起, 已经有太多的客户 (pgjdbc: autodetected server-encoding to be GB2312, if the message is not readable, please check database logs and/or host, port, dbname, user, password, pg_hba.conf)
	at org.postgresql.core.v3.ConnectionFactoryImpl.doAuthentication(ConnectionFactoryImpl.java:514) ~[postgresql-42.2.5.jar:42.2.5]
	at org.postgresql.core.v3.ConnectionFactoryImpl.tryConnect(ConnectionFactoryImpl.java:141) ~[postgresql-42.2.5.jar:42.2.5]
	at org.postgresql.core.v3.ConnectionFactoryImpl.openConnectionImpl(ConnectionFactoryImpl.java:192) ~[postgresql-42.2.5.jar:42.2.5]
	at org.postgresql.core.ConnectionFactory.openConnection(ConnectionFactory.java:49) ~[postgresql-42.2.5.jar:42.2.5]
	at org.postgresql.jdbc.PgConnection.(PgConnection.java:195) ~[postgresql-42.2.5.jar:42.2.5]
	at org.postgresql.Driver.makeConnection(Driver.java:454) ~[postgresql-42.2.5.jar:42.2.5]
	at org.postgresql.Driver.connect(Driver.java:256) ~[postgresql-42.2.5.jar:42.2.5]
	at com.zaxxer.hikari.util.DriverDataSource.getConnection(DriverDataSource.java:136) ~[HikariCP-3.2.0.jar:?]
	at com.zaxxer.hikari.pool.PoolBase.newConnection(PoolBase.java:369) ~[HikariCP-3.2.0.jar:?]
	at com.zaxxer.hikari.pool.PoolBase.newPoolEntry(PoolBase.java:198) ~[HikariCP-3.2.0.jar:?]
	at com.zaxxer.hikari.pool.HikariPool.createPoolEntry(HikariPool.java:467) ~[HikariCP-3.2.0.jar:?]
	at com.zaxxer.hikari.pool.HikariPool.checkFailFast(HikariPool.java:541) ~[HikariCP-3.2.0.jar:?]
	at com.zaxxer.hikari.pool.HikariPool.(HikariPool.java:115) ~[HikariCP-3.2.0.jar:?]
	at com.zaxxer.hikari.HikariDataSource.getConnection(HikariDataSource.java:112) ~[HikariCP-3.2.0.jar:?]
	at org.springframework.jdbc.datasource.DataSourceUtils.fetchConnection(DataSourceUtils.java:157) ~[spring-jdbc-5.1.5.RELEASE.jar:5.1.5.RELEASE]
	at org.springframework.jdbc.datasource.DataSourceUtils.doGetConnection(DataSourceUtils.java:115) ~[spring-jdbc-5.1.5.RELEASE.jar:5.1.5.RELEASE]
	at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:78) ~[spring-jdbc-5.1.5.RELEASE.jar:5.1.5.RELEASE]
	... 13 more

出现这个错误，需要修改配置。找到postgresql.conf 修改连接数

max_connections = 2500			# (change requires restart)

 

 

重启服务