1、数据来源。

控制台地址:172.30.252.164:7001/console 登陆: weblogic/weblogic#123
数据库jdbc:oracle:thin:@172.30.252.123:1521:pndb smartposdb_test/CDE#4rfv

根据上面的内容可以得到：

（1）数据库类型是oracle.

（2）采用的是java的jdbc的thin瘦方式连接数据库。

（3）数据库服务器的ip和端口分别是172.30.252.123和1521。

（4）数据库SID是pndb。

（5）数据库服务器的用户名和密码分别是smartposdb_test和CDE#4rfv。

（6）控制台地址就是浏览器中的网址，因此在浏览器中直接输入。控制台的用户名和密码分别是weblogic和weblogic#123。

#####################################################################

2、日志如下。
---------------------
2018-07-04T01:42:59.888+0800|INFO |SIGUSR2 handler|c.u.x.d.DyncmicDataSourceBySignal|recive signal Swtich2MainDataSource...|LID=[],ID=[],RID=[]
2018-07-04T01:42:59.888+0800|INFO |SIGUSR2 handler|c.u.x.d.DynamicDataSourceHolder|Switch DataSource from [DBSOURCE2 ] to [DBSOURCE1 ]|LID=[],ID=[],RID=[]
2018-07-04T01:42:59.888+0800|INFO |SIGUSR2 handler|c.u.x.datasource.ApplicationSettings|Switch TRANS_NO_PREFIX to N06|LID=[],ID=[],RID=[]
2018-07-04T01:43:03.667+0800|INFO |tLoopGroup-4-61|com.ums.netty.RequestLogger|收到报文：SockAddr=/10.2.131.5:40351, {"reqDetail":"{\"extBillNo\":\"\",\"appId\":\"\",\"printData\":{\"devBatchNo\":\"201801280001\",\"needPrnUMSAdQr\":true},\"location\":\"116.079335|43.937325\",\"pinblock\":\"\",\"currency\":\"156\",\"amount\":\"000000021600\",\"cardNo\":\"\",\"timestamp\":\"20180704014307\",\"extOrderNo\":\"\",\"serviceCode\":\"82\",\"selfDefined048\":\"504235314132303030303030303220202020202020202020202020202020202020202020202020202020202020202020202020202020202020202020202020203030303030303033381F5103504F53FF5512313334353232343932383038393435333438FF610133FF42044646464623\",\"extFld01\":{\"0201\":\"2\",\"0301\":\"2\",\"0302\":\"1\",\"0202\":\"1\"},\"transToken\":\"20180704014306069c39ef5a5546aca1d634ff23fb7a19\"}","appInfo":"{\"appName\":\"POS 通\",\"usinNO\":\"guest\",\"tokenWay\":\"1\",\"bizName\":\"消费\",\"packName\":\"com.ums.tss.mastercontrol\",\"bizId\":\"00010008\"}","chnId":"003","mac":"3936393930324239","method":"com.ums.noncard.post.consume","deviceInfo":"{\"prodCode\":\"N900\",\"devSn\":\"N9NL10108327\",\"firmCode\":\"11\"}","version":"3"}|LID=[7b3e628b916840ceab5ec9b7e5e6fadd],ID=[51991472beec46bf85ee4bde95c6ec3d],RID=[]
2018-07-04T01:43:03.667+0800|INFO |ool-4-thread-78|c.u.x.d.DynamicDataSourceHolder|Current DataSource [DBSOURCE1 ]|LID=[],ID=[51991472beec46bf85ee4bde95c6ec3d],RID=[]
2018-07-04T01:43:03.667+0800|WARN |ool-4-thread-78|o.h.util.JDBCExceptionReporter|SQL Error: 0, SQLState: null|LID=[],ID=[51991472beec46bf85ee4bde95c6ec3d],RID=[]
2018-07-04T01:43:03.667+0800|ERROR|ool-4-thread-78|o.h.util.JDBCExceptionReporter|weblogic.common.resourcepool.ResourceDisabledException: Pool jdbc/xposp_n2 is Suspended, cannot allocate resources to applications..|LID=[],ID=[51991472beec46bf85ee4bde95c6ec3d],RID=[]
2018-07-04T01:43:03.667+0800|WARN |ool-4-thread-78|o.h.util.JDBCExceptionReporter|SQL Error: 0, SQLState: null|LID=[],ID=[51991472beec46bf85ee4bde95c6ec3d],RID=[]
2018-07-04T01:43:03.667+0800|ERROR|ool-4-thread-78|o.h.util.JDBCExceptionReporter|Cannot obtain connection: driverURL = jdbc:weblogic:pool:jdbc/xposp_n2, props = {EmulateTwoPhaseCommit=false, connectionPoolID=jdbc/xposp_n2, jdbcTxDataSource=true, LoggingLastResource=false, dataSourceName=jdbc/xposp_n2}|LID=[],ID=[51991472beec46bf85ee4bde95c6ec3d],RID=[]
2018-07-04T01:43:03.667+0800|WARN |ool-4-thread-78|o.h.util.JDBCExceptionReporter|SQL Error: 0, SQLState: null|LID=[],ID=[51991472beec46bf85ee4bde95c6ec3d],RID=[]
2018-07-04T01:43:03.667+0800|ERROR|ool-4-thread-78|o.h.util.JDBCExceptionReporter|weblogic.common.resourcepool.ResourceDisabledException: Pool jdbc/xposp_n2 is Suspended, cannot allocate resources to applications..|LID=[],ID=[51991472beec46bf85ee4bde95c6ec3d],RID=[]
2018-07-04T01:43:03.667+0800|WARN |ool-4-thread-78|o.h.util.JDBCExceptionReporter|SQL Error: 0, SQLState: null|LID=[],ID=[51991472beec46bf85ee4bde95c6ec3d],RID=[]
2018-07-04T01:43:03.667+0800|ERROR|ool-4-thread-78|o.h.util.JDBCExceptionReporter|Cannot obtain connection: driverURL = jdbc:weblogic:pool:jdbc/xposp_n2, props = {EmulateTwoPhaseCommit=false, connectionPoolID=jdbc/xposp_n2, jdbcTxDataSource=true, LoggingLastResource=false, dataSourceName=jdbc/xposp_n2}|LID=[],ID=[51991472beec46bf85ee4bde95c6ec3d],RID=[]
2018-07-04T01:43:03.668+0800|ERROR|ool-4-thread-78|c.ums.frame.AbstractExceptionHandler|异常：|LID=[],ID=[51991472beec46bf85ee4bde95c6ec3d],RID=[]
org.springframework.jdbc.UncategorizedSQLException: Hibernate operation: Cannot open connection; uncategorized SQLException for SQL [???]; SQL state [null]; error code [0]; weblogic.common.resourcepool.ResourceDisabledException: Pool jdbc/xposp_n2 is Suspended, cannot allocate resources to applications..; nested exception is weblogic.jdbc.extensions.PoolDisabledSQLException: weblogic.common.resourcepool.ResourceDisabledException: Pool jdbc/xposp_n2 is Suspended, cannot allocate resources to applications..
at org.springframework.jdbc.support.AbstractFallbackSQLExceptionTranslator.translate(AbstractFallbackSQLExceptionTranslator.java:83)
at org.springframework.jdbc.support.AbstractFallbackSQLExceptionTranslator.translate(AbstractFallbackSQLExceptionTranslator.java:80)
at org.springframework.jdbc.support.AbstractFallbackSQLExceptionTranslator.translate(AbstractFallbackSQLExceptionTranslator.java:80)
at org.springframework.orm.hibernate3.HibernateAccessor.convertJdbcAccessException(HibernateAccessor.java:424)
at org.springframework.orm.hibernate3.HibernateAccessor.convertHibernateAccessException(HibernateAccessor.java:410)
at org.springframework.orm.hibernate3.HibernateTemplate.doExecute(HibernateTemplate.java:411)
at org.springframework.orm.hibernate3.HibernateTemplate.executeWithNativeSession(HibernateTemplate.java:374)
at com.ums.base.dao.hibernate.HibernateGenericDao.findBySql(HibernateGenericDao.java:620)
at com.ums.xposp.device.dao.impl.DeviceDaoImpl.findUnionDeviceBySN(DeviceDaoImpl.java:38)
at com.ums.xposp.device.service.impl.DeviceServiceImpl.findUnionDeivceBySN(DeviceServiceImpl.java:94)
at $Proxy96.findUnionDeivceBySN(Unknown Source)
at com.ums.xposp.tcpservice.XpospProxyServiceAsync.process(XpospProxyServiceAsync.java:117)
at com.ums.frame.filter.LinkedFilterChain.process(LinkedFilterChain.java:24)
at com.ums.frame.filter.JsonConvertFilter.process(JsonConvertFilter.java:88)
at com.ums.frame.filter.LinkedFilterChain.process(LinkedFilterChain.java:24)
at com.ums.netty.NettyInvokeService.processInvoke(NettyInvokeService.java:49)
at com.ums.netty.RequestHandler$1.run(RequestHandler.java:53)
at com.ums.frame.TaskExecutor$1.run(TaskExecutor.java:85)
at java.util.concurrent.ThreadPoolExecutor$Worker.runTask(ThreadPoolExecutor.java:886)
at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:908)
at java.lang.Thread.run(Thread.java:662)
Caused by: weblogic.jdbc.extensions.PoolDisabledSQLException: weblogic.common.resourcepool.ResourceDisabledException: Pool jdbc/xposp_n2 is Suspended, cannot allocate resources to applications..
at weblogic.jdbc.common.internal.JDBCUtil.wrapAndThrowResourceException(JDBCUtil.java:251)
at weblogic.jdbc.pool.Driver.connect(Driver.java:142)
at weblogic.jdbc.jts.Driver.getNonTxConnection(Driver.java:658)
at weblogic.jdbc.jts.Driver.connect(Driver.java:127)
at sun.reflect.GeneratedMethodAccessor121.invoke(Unknown Source)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25)
at java.lang.reflect.Method.invoke(Method.java:597)
at net.bull.javamelody.JdbcWrapper$2.invoke(JdbcWrapper.java:681)
at net.bull.javamelody.JdbcWrapper$DelegatingInvocationHandler.invoke(JdbcWrapper.java:282)
at $Proxy102.connect(Unknown Source)
at weblogic.jdbc.common.internal.RmiDataSource.getConnectionInternal(RmiDataSource.java:548)
at weblogic.jdbc.common.internal.RmiDataSource.getConnection(RmiDataSource.java:513)
at weblogic.jdbc.common.internal.RmiDataSource.getConnection(RmiDataSource.java:506)
at org.springframework.jdbc.datasource.lookup.AbstractRoutingDataSource.getConnection(AbstractRoutingDataSource.java:162)
at org.springframework.orm.hibernate3.LocalDataSourceConnectionProvider.getConnection(LocalDataSourceConnectionProvider.java:83)
at org.hibernate.jdbc.ConnectionManager.openConnection(ConnectionManager.java:446)
at org.hibernate.jdbc.ConnectionManager.getConnection(ConnectionManager.java:167)
at org.hibernate.jdbc.AbstractBatcher.prepareQueryStatement(AbstractBatcher.java:161)
at org.hibernate.loader.Loader.prepareQueryStatement(Loader.java:1700)
at org.hibernate.loader.Loader.doQuery(Loader.java:801)
at org.hibernate.loader.Loader.doQueryAndInitializeNonLazyCollections(Loader.java:274)
at org.hibernate.loader.Loader.doList(Loader.java:2542)
at org.hibernate.loader.Loader.listIgnoreQueryCache(Loader.java:2276)
at org.hibernate.loader.Loader.list(Loader.java:2271)
at org.hibernate.loader.custom.CustomLoader.list(CustomLoader.java:316)
at org.hibernate.impl.SessionImpl.listCustomQuery(SessionImpl.java:1842)
at org.hibernate.impl.AbstractSessionImpl.list(AbstractSessionImpl.java:165)
at org.hibernate.impl.SQLQueryImpl.list(SQLQueryImpl.java:157)
at com.ums.base.dao.hibernate.HibernateGenericDao$9.doInHibernate(HibernateGenericDao.java:624)
at org.springframework.orm.hibernate3.HibernateTemplate.doExecute(HibernateTemplate.java:406)
... 20 common frames omitted
2018-07-04T01:43:03.669+0800|INFO |ool-4-thread-78|com.ums.netty.NettyExceptionHandler|完成异步业务应答: com.ums.noncard.post.consume, 耗时: 3|LID=[],ID=[51991472beec46bf85ee4bde95c6ec3d],RID=[]
2018-07-04T01:43:03.669+0800|INFO |ool-4-thread-78|com.ums.netty.NettyInvokeService|请求处理结束|LID=[],ID=[51991472beec46bf85ee4bde95c6ec3d],RID=[]
2018-07-04T01:43:03.669+0800|INFO |tLoopGroup-4-61|com.ums.netty.ResponseLogger|应答报文: /10.2.131.5:40351
{"retCode":"9999","retMsg":"系统繁忙，请重试"}|LID=[],ID=[51991472beec46bf85ee4bde95c6ec3d],RID=[087cbf9c6df79f1896147ea51f89bc82459dd2044fd0736be4b33d41ad0e964f]

ces to applications..|LID=[],ID=[aaf7362bad7947efa4ddc85c09746cff],RID=[]
2018-07-04T01:43:05.232+0800|WARN |ool-4-thread-78|o.h.util.JDBCExceptionReporter|SQL Error: 0, SQLState: null|LID=[],ID=[aaf7362bad7947efa4ddc85c09746cff],RID=[]
2018-07-04T01:43:05.232+0800|ERROR|ool-4-thread-78|o.h.util.JDBCExceptionReporter|Cannot obtain connection: driverURL = jdbc:weblogic:pool:jdbc/xposp_n2, props = {EmulateTwoPhaseCommit=false, connectionPoolID=jdbc/xposp_n2, jdbcTxDataSource=true, LoggingLastResource=false, dataSourceName=jdbc/xposp_n2}|LID=[],ID=[aaf7362bad7947efa4ddc85c09746cff],RID=[]
2018-07-04T01:43:05.232+0800|WARN |ool-4-thread-78|o.h.util.JDBCExceptionReporter|SQL Error: 0, SQLState: null|LID=[],ID=[aaf7362bad7947efa4ddc85c09746cff],RID=[]
2018-07-04T01:43:05.232+0800|ERROR|ool-4-thread-78|o.h.util.JDBCExceptionReporter|weblogic.common.resourcepool.ResourceDisabledException: Pool jdbc/xposp_n2 is Suspended, cannot allocate resources to applications..|LID=[],ID=[aaf7362bad7947efa4ddc85c09746cff],RID=[]
2018-07-04T01:43:05.232+0800|WARN |ool-4-thread-78|o.h.util.JDBCExceptionReporter|SQL Error: 0, SQLState: null|LID=[],ID=[aaf7362bad7947efa4ddc85c09746cff],RID=[]
2018-07-04T01:43:05.232+0800|ERROR|ool-4-thread-78|o.h.util.JDBCExceptionReporter|Cannot obtain connection: driverURL = jdbc:weblogic:pool:jdbc/xposp_n2, props = {EmulateTwoPhaseCommit=false, connectionPoolID=jdbc/xposp_n2, jdbcTxDataSource=true, LoggingLastResource=false, dataSourceName=jdbc/xposp_n2}|LID=[],ID=[aaf7362bad7947efa4ddc85c09746cff],RID=[]
2018-07-04T01:43:05.233+0800|ERROR|ool-4-thread-78|c.ums.frame.AbstractExceptionHandler|异常：|LID=[],ID=[aaf7362bad7947efa4ddc85c09746cff],RID=[]
org.springframework.jdbc.UncategorizedSQLException: Hibernate operation: Cannot open connection; uncategorized SQLException for SQL [???]; SQL state [null]; error code [0]; weblogic.common.resourcepool.ResourceDisabledException: Pool jdbc/xposp_n2 is Suspended, cannot allocate resources to applications..; nested exception is weblogic.jdbc.extensions.PoolDisabledSQLException: weblogic.common.resourcepool.ResourceDisabledException: Pool jdbc/xposp_n2 is Suspended, cannot allocate resources to applications..
at org.springframework.jdbc.support.AbstractFallbackSQLExceptionTranslator.translate(AbstractFallbackSQLExceptionTranslator.java:83)
at org.springframework.jdbc.support.AbstractFallbackSQLExceptionTranslator.translate(AbstractFallbackSQLExceptionTranslator.java:80)
at org.springframework.jdbc.support.AbstractFallbackSQLExceptionTranslator.translate(AbstractFallbackSQLExceptionTranslator.java:80)
at org.springframework.orm.hibernate3.HibernateAccessor.convertJdbcAccessException(HibernateAccessor.java:424)
at org.springframework.orm.hibernate3.HibernateAccessor.convertHibernateAccessException(HibernateAccessor.java:410)
at org.springframework.orm.hibernate3.HibernateTemplate.doExecute(HibernateTemplate.java:411)
at org.springframework.orm.hibernate3.HibernateTemplate.executeWithNativeSession(HibernateTemplate.java:374)
at com.ums.base.dao.hibernate.HibernateGenericDao.findBySql(HibernateGenericDao.java:620)
at com.ums.xposp.device.dao.impl.DeviceDaoImpl.findUnionDeviceBySN(DeviceDaoImpl.java:38)
at com.ums.xposp.device.service.impl.DeviceServiceImpl.findUnionDeivceBySN(DeviceServiceImpl.java:94)
at sun.reflect.GeneratedMethodAccessor147.invoke(Unknown Source)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25)
at java.lang.reflect.Method.invoke(Method.java:597)
at org.springframework.aop.support.AopUtils.invokeJoinpointUsingReflection(AopUtils.java:317)
at org.springframework.aop.framework.JdkDynamicAopProxy.invoke(JdkDynamicAopProxy.java:198)
at $Proxy96.findUnionDeivceBySN(Unknown Source)
at com.ums.xposp.tcpservice.XpospProxyServiceAsync.process(XpospProxyServiceAsync.java:117)
at com.ums.frame.filter.LinkedFilterChain.process(LinkedFilterChain.java:24)
at com.ums.frame.filter.JsonConvertFilter.process(JsonConvertFilter.java:88)
at com.ums.frame.filter.LinkedFilterChain.process(LinkedFilterChain.java:24)
at com.ums.netty.NettyInvokeService.processInvoke(NettyInvokeService.java:49)
at com.ums.netty.RequestHandler$1.run(RequestHandler.java:53)
at com.ums.frame.TaskExecutor$1.run(TaskExecutor.java:85)
at java.util.concurrent.ThreadPoolExecutor$Worker.runTask(ThreadPoolExecutor.java:886)
at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:908)
at java.lang.Thread.run(Thread.java:662)
Caused by: weblogic.jdbc.extensions.PoolDisabledSQLException: weblogic.common.resourcepool.ResourceDisabledException: Pool jdbc/xposp_n2 is Suspended, cannot allocate resources to applications..
at weblogic.jdbc.common.internal.JDBCUtil.wrapAndThrowResourceException(JDBCUtil.java:251)
at weblogic.jdbc.pool.Driver.connect(Driver.java:142)
at weblogic.jdbc.jts.Driver.getNonTxConnection(Driver.java:658)
at weblogic.jdbc.jts.Driver.connect(Driver.java:127)
at sun.reflect.GeneratedMethodAccessor121.invoke(Unknown Source)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25)
at java.lang.reflect.Method.invoke(Method.java:597)
at net.bull.javamelody.JdbcWrapper$2.invoke(JdbcWrapper.java:681)
at net.bull.javamelody.JdbcWrapper$DelegatingInvocationHandler.invoke(JdbcWrapper.java:282)
at $Proxy102.connect(Unknown Source)
at weblogic.jdbc.common.internal.RmiDataSource.getConnectionInternal(RmiDataSource.java:548)
at weblogic.jdbc.common.internal.RmiDataSource.getConnection(RmiDataSource.java:513)
at weblogic.jdbc.common.internal.RmiDataSource.getConnection(RmiDataSource.java:506)
at org.springframework.jdbc.datasource.lookup.AbstractRoutingDataSource.getConnection(AbstractRoutingDataSource.java:162)
at org.springframework.orm.hibernate3.LocalDataSourceConnectionProvider.getConnection(LocalDataSourceConnectionProvider.java:83)
at org.hibernate.jdbc.ConnectionManager.openConnection(ConnectionManager.java:446)
at org.hibernate.jdbc.ConnectionManager.getConnection(ConnectionManager.java:167)
at org.hibernate.jdbc.AbstractBatcher.prepareQueryStatement(AbstractBatcher.java:161)
at org.hibernate.loader.Loader.prepareQueryStatement(Loader.java:1700)
at org.hibernate.loader.Loader.doQuery(Loader.java:801)
at org.hibernate.loader.Loader.doQueryAndInitializeNonLazyCollections(Loader.java:274)
at org.hibernate.loader.Loader.doList(Loader.java:2542)
at org.hibernate.loader.Loader.listIgnoreQueryCache(Loader.java:2276)
at org.hibernate.loader.Loader.list(Loader.java:2271)
at org.hibernate.loader.custom.CustomLoader.list(CustomLoader.java:316)
at org.hibernate.impl.SessionImpl.listCustomQuery(SessionImpl.java:1842)
at org.hibernate.impl.AbstractSessionImpl.list(AbstractSessionImpl.java:165)
at org.hibernate.impl.SQLQueryImpl.list(SQLQueryImpl.java:157)
at com.ums.base.dao.hibernate.HibernateGenericDao$9.doInHibernate(HibernateGenericDao.java:624)
at org.springframework.orm.hibernate3.HibernateTemplate.doExecute(HibernateTemplate.java:406)
... 20 common frames omitted
2018-07-04T01:43:05.233+0800|INFO |ool-4-thread-78|com.ums.netty.NettyExceptionHandler|完成异步业务应答: com.ums.noncard.post.guarantee, 耗时: 1|LID=[],ID=[aaf7362bad7947efa4ddc85c09746cff],RID=[]
2018-07-04T01:43:05.233+0800|INFO |ool-4-thread-78|com.ums.netty.NettyInvokeService|请求处理结束|LID=[],ID=[aaf7362bad7947efa4ddc85c09746cff],RID=[]
2018-07-04T01:43:05.233+0800|INFO |tLoopGroup-4-62|com.ums.netty.ResponseLogger|应答报文: /10.2.131.5:40355
{"retCode":"9999","retMsg":"系统繁忙，请重试"}|LID=[],ID=[aaf7362bad7947efa4ddc85c09746cff],RID=[972cb5f6152437c2e390cdb30e286b740dde28eff38b8995442b78af1299faa4]

##########################################################################

3、问题分析。

4、问题解决。

oracle连接池问题的更多相关文章

  1. oracle 连接池参数

    后来排查出数据库监听异常,发现是ORA-12519拒绝错误.后来发现是数据的连接池达到的极致. 具体解决方案如下: --首先检查process和session的使用情况,在sqlplus里面查看. S ...

  2. Oracle连接池工具类OJDBCUtils

    Oraclejdbc.properties driverClassName=oracle.jdbc.driver.OracleDriver url=jdbc:oracle:thin:@127.0.0. ...

  3. Oracle连接池

    原由:许多用户可能在查询相同的数据库以获取相同的数据.在这些情况下,可以通过使应用程序共享到数据源的连接来提高应用程序的性能.否则,让每个用户打开和关闭单独的连接的开销会对应用程序性能产生不利影响.这 ...

  4. tomcat+oracle连接池

    tomcat 5.5.23 oracle 10g 全局配置 一.tomcat目录\common\lib下添加包ojdbc14.jar. 二.tomcat目录\conf\server.xml的<G ...

  5. .net跨防火墙链接oracle连接池链接长时间无通讯数据被断开后报错问题解决

    环境: .net 4.0以上使用Oracle.ManagedDataAccess组件链接oracle数据库,应用程序与数据库之间存在硬件防火墙. 症状:应用程序启动后正常访问,如果出现长时间无数据库请 ...

  6. spring+apache dbcp +oracle 连接池配置以及优化

    特此记录 <!-- 数据源配置, 使用应用中的DBCP数据库连接池 --> <bean id="dataSource" class="org.apach ...

  7. tomcat oracle 连接池配置

    <?xml version='1.0' encoding='utf-8'?> <Context displayName="zcgl" docBase=" ...

  8. Tomcat+Oracle配置连接池的例子

    我这有一个Tomcat+Oracle连接池的例子,放上来和大家分享一下. Tomcat +Oracle  连接池配置   Author: Kenneth.Leaf@GalaxySoft Date: / ...

  9. python - DBUtils 连接池减少oracle数据库的连接数

    问题: 接到需求,告知项目的oracle连接次数过多,对系统造成太过大的负担,要求减少oracle数据库的连接次数 分析: 仔细分析代码以后,发现产生问题的原因,在于之前要求提升oracle监控的监控 ...

随机推荐

  1. 小结：hash

    概要: 判重的时候可以用手写hash,也可以用stl中的map,手写hash的好处是快,解决冲突的方案较好,map慢.但是手写hash要求的空间高,而且有时处理得不好的话会wa. 注意及技巧: 注意的 ...

  2. gcc参数PIE和PIC的区别和共同点

    gcc参数的PIE和PIC 区别 PIE:用在可执行文件 PIC:用在库文件 共同点 生成跟位置没有关系的symbol

  3. HttpModule的简单示例

    1.HttpModule可用在asp.net 管线事件触发的过程中.. 可处理一些通用的操作,如给特定请求加 gzip压缩. 2.示例代码: using System; using System.We ...

  4. js后台常用树形菜单

    来源:http://www.sucaihuo.com/js/1093.html demo: http://www.sucaihuo.com/jquery/10/1093/demo/

  5. JSON.parse() 和 JSON.stringify() 的区别

    JSON.parse()与JSON.stringify()的区别   JSON.parse()[从一个字符串中解析出json对象] //定义一个字符串 var data='{"name&qu ...

  6. 杂记之--苹果4s手机呼叫转移怎么设置

    您好,呼叫转移只需在拨号界面输入相应的代码就可以,无需其他设置无条件转移 **21*电话号码#再按拨号键 取消代码:##21# *#21# 再按拨号键无信号,关机转移 **62*电话号码#再按拨号键 ...

  7. cookie是什么，在什么地方会用到

    1.它是由服务器存储在硬盘上一的上小型txt文件 2..cookie也可以理解为缓存,方便下次浏览,推介等作用

  8. ImageLoader must be init with configuration before using

    遇到上面的问题是没有全局初使化ImageLoader,我是在Application中配置了ImageLoaderConfiguration 解决的,当然还有官方的写法 public class MyA ...

  9. pure

    Pure也是一款很出色的CSS框架,之前分享的Bootstrap是由Twitter出品的,而Pure是来自雅虎的.尽管从UI界面效果上来说,Pure没有Bootstrap那样精美,但Pure是纯CSS ...

  10. codevs 5965 [SDOI2017]新生舞会

    分数规划的裸题. 不会分数规划的OIer.百度:胡伯涛<最小割模型在信息学竞赛中的应用> /* TLE1: last:add(i,j+n,1e9,(real)((real)a[i][j]- ...