c3p0 连接池配置

C3P0 可使用properties 配置文件方式，将c3p0.properties放在classpath目录下，如果为WEB应用，放在WEB-INFclasses下

 

c3p0.properties 

# 

# This file is detritus from various testing attempts 

# the values below may change, and often do not represent 

# reasonable values for the parameters. 

# 

 

 

c3p0.jdbcUrl=jdbc:oracle:thin:@127.0.0.1:1521:chenchi 

c3p0.driverClass=oracle.jdbc.driver.OracleDriver 

c3p0.user=hbota2 

c3p0.password=ty1234 

 

 

c3p0.minPoolSize=3 

c3p0.maxPoolSize=20 

 

 

#c3p0.testConnectionOnCheckout=true 

#c3p0.testConnectionOnCheckin=true 

 

 

#c3p0.checkoutTimeout=2000 

#c3p0.idleConnectionTestPeriod=5 

#c3p0.maxConnectionAge=10 

#c3p0.maxIdleTime=2 

#c3p0.maxIdleTimeExcessConnections=1 

#c3p0.propertyCycle=1 

#c3p0.numHelperThreads=10 

#c3p0.unreturnedConnectionTimeout=15 

#c3p0.debugUnreturnedConnectionStackTraces=true 

#c3p0.maxStatements=30 

#c3p0.maxStatementsPerConnection=5 

#c3p0.maxAdministrativeTaskTime=3 

#c3p0.preferredTestQuery=SELECT 1 

#c3p0.preferredTestQuery=SELECT a FROM emptyyukyuk WHERE a = 5 

#c3p0.preferredTestQuery=SELECT a FROM testpbds WHERE a = 5 

#c3p0.usesTraditionalReflectiveProxies=true 

#c3p0.automaticTestTable=PoopyTestTable 

#c3p0.acquireIncrement=4 

#c3p0.acquireRetryDelay=1000 

#c3p0.acquireRetryAttempts=60 

#c3p0.connectionTesterClassName=com.mchange.v2.c3p0.test.AlwaysFailConnectionTester 

#c3p0.initialPoolSize=10 

com.mchange.v2.log.MLog=com.mchange.v2.log.log4j.Log4jMLog 

#com.mchange.v2.log.MLog=com.mchange.v2.log.jdk14logging.Jdk14MLog 

 

 

#com.mchange.v2.log.MLog=com.mchange.v2.log.FallbackMLog 

com.mchange.v2.log.NameTransformer=com.mchange.v2.log.PackageNames 

com.mchange.v2.log.FallbackMLog.DEFAULT_CUTOFF_LEVEL=ALL 

 

 

#com.mchange.v2.c3p0.VMID=poop 

 

 

java

代码

 

ComboPooledDataSource cpds = new ComboPooledDataSource(); 

Connection conn = cpds.getConnection(); 

//

业务代码

 

conn.close();