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如何调出cloudscape数据库的图形治理界面及相关问题你在命令行方法下敲入java COM.cloudscape.tools.cview很可能会出现错误。什么原因呢？第一、你要看看你的jdk版本对不对，是不是1.3.1_02以上或者1.4的。第二、要害中的要害，原来sun的j2ee里的cloudview是不能在他附带的cloudscape4.0.6下工作的（真不知道sun在搞什么东东 ：））这里是在ibm网站上的一句原话：The Java 2 SDK, Enterprise Edition v. 1.3.1 includes Cloudscape 4.0.6 but includes a version of Cloudview which will not function with the 4.0.6 system。所以同志门就自己去下一个吧！ 常见错误：java.lang.ClassNotFoundException: COM.cloudscape.core.JDBCDriver英文解释：To "find" the missing driver, you need to add to the CLASSPATH the cloudscape jar files RmiJdbc.jar , cloudclient.jar and system/cloudscape.jar which are located under the directory %J2EE_HOME%/lib/cloudscape/ So, under UNIX you should execute: setenv CLASSPATH .:$J2EE_HOME/lib/cloudscape/system/cloudscape.jar:$J2EE_HOME/lib/cloudscape/cloudclient.jar:$J2EE_HOME/lib/cloudscape/RmiJdbc.jar under Windows, you should add to CLASSPATH the following %J2EE_HOME%/lib/cloudscape ystem/cloudscape.jar;%J2EE_HOME%/lib/cloudscape/cloudclient.jar;%J2EE_HOME%/lib/cloudscape/RmiJdbc.jar If you will, you can also look at "cloudscape" command (cloudscape.bat under Windows) what jar files it adds to its classpath. We\\\'d like also to give you a hint regarding missing classes. If some class cannot be loaded, even though it should be somewhere, this indicates that the class is not "visible" in classpath for a class loader. To find the class, you should inspect JAR files under lib directory of a Java environment by using "jar -tvf file.jar" or WinZip. For example, to find the driver under UNIX one should execute in the directory $J2EE_HOME/lib/cloudscape/system/ the following jar tvf cloudscape.jar | grep JDBCDriver In particular , the driver class COM.cloudscape.core.JDBCDriver is packaged in %J2EE_HOME%/lib/cloudscape ystem/cloudscape.jar (under UNIX in $J2EE_HOME/lib/cloudscape/system/cloudscape.jar) 中文解释：重点是设置对RmiJdbc.jar , cloudclient.jar and system/cloudscape.jar 几点注重的地方： 1.修改完resource.properties，需要重起j2ee server2.使用cloudview时，cloudscape数据库必须关闭，设置完以后再重起数据库3.deploy修改默认SQL的时候，点画面左边的SQL名称，右边出现SQL文，修改完毕之后必须再点一下左边的这个SQL名称，这样表示更新了，假如直接去点别的SQL名称，就会乱掉。看到前面有的哥们儿说改一下就按一下OK，否则会乱，其实不必。5.不知道cloudscape数据库怎么样，反正Oracle中在SQL中不加""就会忽略大小写。比如：select * from employee where employeeID=\\\'123\\\'和select * from EMPLOYEE where EMPLOYEEID=\\\'123\\\'是相同的，但是deploy时默认的SQL中是有""的，这样select * from "employee" where "employeeID"=\\\'123\\\'就和select * from "EMPLOYEE" where "EMPLOYEEID"=\\\'123\\\'不相同了。前面有的朋友说字段大小写的问题估计就在此。4.deploy结束之后需要save，否则jsp中输入ID，点submit就会是白板一块。 返回类别: 教程 上一教程: java中文件长度的转变 下一教程: java 面试 您可以阅读与"如何调出cloudscape数据库的图形治理界面及相关问题"相关的教程: · Java访问数据库的速度瓶颈问题的分析及解决 · JSP用连接池连数据库的问题 · JAVA访问数据库的速度瓶颈问题的分析及解决 · JSP访问数据库的问题整理 · 新手请教jsp连接数据库的问题 |
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