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简介

1、对接达梦数据库

2、链接数据库时报错

3、达梦数据开启了大小写敏感

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达梦数据库驱动

<dependency>
	<groupId>com.dameng</groupId>
	<artifactId>DmJdbcDriver18</artifactId>
	<version>8.1.2.192</version>
</dependency>

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报错信息

2024-08-01 15:52:05.518 - [ERROR] - [Druid-ConnectionPool-Create-630313530] - [com.alibaba.druid.pool.DruidDataSource - line:2781]: create connection SQLException, url: jdbc:dm://192.168.1.165:5236?schema=icip6&zeroDateTimeBehavior=convertToNull&useUnicode=true&characterEncoding=utf-8, errorCode -2103, state 3F000
dm.jdbc.driver.DMException: 第1 行附近出现错误:
无效的模式名[ICIP6]
	at dm.jdbc.driver.DBError.throwException(DBError.java:711)
	at dm.jdbc.a.b.o.x(MSG.java:591)
	at dm.jdbc.a.b.o.C(MSG.java:526)
	at dm.jdbc.a.b.o.B(MSG.java:507)
	at dm.jdbc.a.a.a(DBAccess.java:245)
	at dm.jdbc.a.a.a(DBAccess.java:729)
	at dm.jdbc.driver.DmdbStatement.executeInner(DmdbStatement.java:730)
	at dm.jdbc.driver.DmdbStatement.do_execute(DmdbStatement.java:190)
	at dm.jdbc.driver.DmdbStatement.do_execute(DmdbStatement.java:182)
	at dm.jdbc.util.DriverUtil.execute(DriverUtil.java:309)
	at dm.jdbc.driver.DmdbConnection.do_setSchema(DmdbConnection.java:1227)
	at dm.jdbc.driver.DmdbConnection.openConnection(DmdbConnection.java:644)
	at dm.jdbc.desc.EP.connect(EP.java:159)
	at dm.jdbc.desc.EPGroup$EPSelector.select(EPGroup.java:395)
	at dm.jdbc.desc.EPGroup.connect(EPGroup.java:278)
	at dm.jdbc.driver.DmDriver.do_connect(DmDriver.java:163)
	at dm.jdbc.driver.DmDriver.connect(DmDriver.java:449)
	at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1644)
	at com.alibaba.druid.pool.DruidAbstractDataSource.createPhysicalConnection(DruidAbstractDataSource.java:1710)
	at com.alibaba.druid.pool.DruidDataSource$CreateConnectionThread.run(DruidDataSource.java:2779)

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排查

1、确认icip6数据库确实存在

2、查看报错信息，发现icip6数据库被自动转为大写，变成ICIP6数据库

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原因

数据库名称被自动转为大写，导致找不到对应的数据库

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解决

方法一：重新导入一个数据库名称为大写的数据库

方法二：更换达梦数据库驱动版本，该版本不会自动将数据库名称转为大写

<dependency>
	<groupId>com.dameng</groupId>
	<artifactId>DmJdbcDriver18</artifactId>
	<version>8.1.3.140</version>
</dependency>