# 平台数据库配置

- [接入第三方数据库](https://o2oa.gitbook.io/course/ping-tai-shi-shi/ping-tai-shu-ju-ku-pei-zhi/jie-ru-di-san-fang-shu-ju-ku.md): O2OA内置H2数据库，但系统真正上线使用时，需要更高的数据库性能。此时，可以将O2OA数据库切换到第三方商用级数据库，如Mysql等。本文以MySQL数据库为例进行说明。
- [数据库驱动JAR包的更新或新增](https://o2oa.gitbook.io/course/ping-tai-shi-shi/ping-tai-shu-ju-ku-pei-zhi/shu-ju-ku-qu-dong-jar-bao-de-geng-xin-huo-xin-zeng.md): 系统支持修改已经存在的数据库驱动包，也可以添加新的驱动。
- [数据库配置信息样例](https://o2oa.gitbook.io/course/ping-tai-shi-shi/ping-tai-shu-ju-ku-pei-zhi/shu-ju-ku-shu-ju-biao-jie-shao.md): 本章节主要介绍O2OA支持的各种不同的数据库的连接配置信息，供开发者参考。
- [访问和操作H2数据库](https://o2oa.gitbook.io/course/ping-tai-shi-shi/ping-tai-shu-ju-ku-pei-zhi/fang-wen-he-cao-zuo-h2-shu-ju-ku.md): O2OA平台内嵌了H2数据库，管理员可以通过支持JDBC的客户端对H2数据库进行访问和数据操作。
- [清除废弃的业务数据](https://o2oa.gitbook.io/course/ping-tai-shi-shi/ping-tai-shu-ju-ku-pei-zhi/qing-chu-fei-qi-de-ye-wu-shu-ju.md): 当O2OA业务开发完成时，上线前通常需要清除已经存在的测试数据，或者演示数据。O2OA提供命令对指定模块的业务数据进行清除。
- [压缩H2数据库](https://o2oa.gitbook.io/course/ping-tai-shi-shi/ping-tai-shu-ju-ku-pei-zhi/ya-suo-h2-shu-ju-ku.md): 平台自带的H2数据库在使用过程中会随着数据量的增加而增长，但是并不会在删除数据后自动缩小。所以O2OA提供了数据库压缩命令用于缩小数据库占用的空间。


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