Java 声明。更改为使用maxStatementsPerConnection并将MaxPoolSize更新为100似乎目前正在工作，我只是偶尔看到时间>1秒。我会给它一两个小时的时间睡觉……情况肯定有所改善，我们已经走上了正确的轨道，所以我称之为固定-谢谢！ 10

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声明。更改为使用

maxStatementsPerConnection

并将

MaxPoolSize

更新为100似乎目前正在工作，我只是偶尔看到时间>1秒。我会给它一两个小时的时间睡觉……情况肯定有所改善，我们已经走上了正确的轨道，所以我称之为固定-谢谢！

10:19:29.149 DEBUG org.hibernate.SQL [I=9534] - select eventrepor0_.consortium_id as consorti1_3_3_, eventrepor0_.customer_resource_id as customer6_3_3_, eventrepor0_.item_type_id as item2_3_3_, eventrepor0_.reporting_date as reportin3_3_3_, eventrepor0_.event_subtype as event4_3_3_, eventrepor0_.event_count as event5_3_3_, customerre1_.id as id1_2_0_, customerre1_.customer_id as customer2_2_0_, customerre1_.resource_id as resource3_2_0_, resource2_.id as id1_8_1_, resource2_.data_type_id as data2_8_1_, resource2_.platform_id as platform5_8_1_, resource2_.prop_id as prop3_8_1_, resource2_.title as title4_8_1_, resource2_1_.doi as doi1_6_1_, resource2_1_.isbn as isbn2_6_1_, resource2_1_.online_issn as online3_6_1_, resource2_1_.print_issn as print4_6_1_, resource2_1_.publisher as publishe5_6_1_, resource2_1_.yop as yop6_6_1_, case when resource2_1_.id is not null then 1 when resource2_.id is not null then 0 end as clazz_1_, platform3_.id as id1_4_2_, platform3_.api_key as api2_4_2_, platform3_.platform_name as platform3_4_2_, hostnames4_.platform_id as platform1_4_5_, hostnames4_.hostname as hostname2_5_5_ from event_report eventrepor0_ inner join customer_resource customerre1_ on eventrepor0_.customer_resource_id=customerre1_.id left outer join resource resource2_ on customerre1_.resource_id=resource2_.id left outer join published_resource resource2_1_ on resource2_.id=resource2_1_.id left outer join platform platform3_ on resource2_.platform_id=platform3_.id left outer join platform_hostnames hostnames4_ on platform3_.id=hostnames4_.platform_id where eventrepor0_.consortium_id=? and eventrepor0_.customer_resource_id=? and eventrepor0_.item_type_id=? and eventrepor0_.reporting_date=? and eventrepor0_.event_subtype=?
10:19:29.149 DEBUG c.m.v.a.ThreadPoolAsynchronousRunner [I=9534] - com.mchange.v2.async.ThreadPoolAsynchronousRunner@4ffa2724: Adding task to queue -- com.mchange.v2.c3p0.stmt.GooGooStatementCache$1StmtAcquireTask@31e6b320
10:19:29.149 DEBUG c.m.v.c3p0.stmt.GooGooStatementCache [I=9534] - CULLING: update event_report set event_count=event_count+1 where customer_resource_id=? and item_type_id=? and event_subtype=? and reporting_date=? and consortium_id=?
10:19:29.149 DEBUG c.m.v.a.ThreadPoolAsynchronousRunner [I=9534] - com.mchange.v2.async.ThreadPoolAsynchronousRunner@4ffa2724: Adding task to queue -- com.mchange.v2.c3p0.stmt.GooGooStatementCache$StatementDestructionManager$1UncheckedStatementCloseTask@20fa1378
10:19:29.149 DEBUG c.m.v.c3p0.stmt.GooGooStatementCache [I=9534] - cxnStmtMgr.statementSet( org.postgresql.jdbc4.Jdbc4Connection@38e040d2 ).size(): 5
10:19:29.150 DEBUG c.m.v.c3p0.stmt.GooGooStatementCache [I=9534] - checkoutStatement: com.mchange.v2.c3p0.stmt.GlobalMaxOnlyStatementCache stats -- total size: 20; checked out: 5; num connections: 6; num keys: 20
10:19:29.150 TRACE o.h.e.j.internal.JdbcCoordinatorImpl [I=9534] - Registering statement [com.mchange.v2.c3p0.impl.NewProxyPreparedStatement@7cc20161]
10:19:29.150 TRACE o.h.e.j.internal.JdbcCoordinatorImpl [I=9534] - Registering last query statement [com.mchange.v2.c3p0.impl.NewProxyPreparedStatement@7cc20161]
10:19:29.150 TRACE o.h.type.descriptor.sql.BasicBinder [I=9534] - binding parameter [1] as [VARCHAR] - 
10:19:29.150 TRACE o.h.type.descriptor.sql.BasicBinder [I=9534] - binding parameter [2] as [BIGINT] - 47
10:19:29.150 TRACE org.hibernate.type.EnumType [I=9534] - Binding [SEARCH_REG] to parameter: [3]
10:19:29.150 TRACE o.h.type.descriptor.sql.BasicBinder [I=9534] - binding parameter [4] as [TIMESTAMP] - Tue Jul 16 00:00:00 BST 2013
10:19:29.151 TRACE o.h.type.descriptor.sql.BasicBinder [I=9534] - binding parameter [5] as [VARCHAR] - 
10:19:29.151 TRACE org.hibernate.loader.Loader [I=9534] - Bound [6] parameters total
[... massive gap ...]
10:19:55.644 TRACE o.h.e.j.internal.JdbcCoordinatorImpl [I=9534] - Registering result set [com.mchange.v2.c3p0.impl.NewProxyResultSet@fa7b109]

com.mchange.v2.c3p0.stmt.GlobalMaxOnlyStatementCache stats -- total size: 20; checked out: 6; num connections: 6; num keys: 20

ComboPooledDataSource dataSource = new com.mchange.v2.c3p0.ComboPooledDataSource();
dataSource.setInitialPoolSize(5);
dataSource.setMaxPoolSize(20);
dataSource.setMinPoolSize(5);
dataSource.setMaxStatements(20);
dataSource.setIdleConnectionTestPeriod(3600);
dataSource.setTestConnectionOnCheckin( Boolean.TRUE.toString() );
dataSource.setPreferredTestQuery("select 1");

props.put("hibernate.dialect", "org.hibernate.dialect.PostgreSQL82Dialect");
props.put("hibernate.show_sql", "false");
props.put("generate_statistics", "false");
props.put("javax.persistence.sharedCache.mode", "ENABLE_SELECTIVE");
props.put("javax.persistence.validation.mode", "NONE");
props.put("hibernate.cache.use_second_level_cache", "false");
props.put("hibernate.cache.region.factory_class", "org.hibernate.cache.impl.NoCachingRegionFactory");
props.put("hibernate.hbm2ddl.auto", "false");