C3P0 0.9.5.2 发布，此版本改进内容如下： -- Fix a bug in MLog bridge to slf4j logging, in which loggability of levels of wrapped loggers was misreported, leading to useless allocation of log Strings below the logging threshold. Grr. [change is in mchange-commons-java 0.2.11]. Many thanks to Lewis Wong on Stack Exchange for calling attention to this issue. -- Embed last acquistion failure as nested Exception in CannotAcquireResourceException. Thanks to nigam on github for this addition. 下载：https://github.com/swaldman/c3p0/archive/c3p0-0.9.5.2.zip。 C3P0是一个开放源代码的JDBC连接池，Hibernate的发行包中默认使用此连接池。据说性能最好。 详细的文档在C3P0的下载包中。本站提供最新版的C3P0文档，链接是： http://tool.oschina.net/apidocs/apidoc?api=c3p0 C3P0 0.9.5.2 发布，数据库连接池下载地址
