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ORA-12514: TNS:listener does not currently know of service requested in connect descriptor 监听器目前不知道在连接描述符中的服务请求。 Expert Oracle Database Tips by Donald 阅读全文
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reference to wbsite:http://zhangzhongjie.iteye.com/blog/1948930#comments DBMS_RANDON PACKAGE: Define; It is procedure package that can generate randon 阅读全文
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How to import .sql script 1.Export .sql from pl/sql developer you can reference to other document in my blog. 2.use @ symbol import write .sql script 阅读全文
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MEGE Sentence This oracle tutorial explains how to use the oralce MEGER sentence with syntax and samples. Description The MEGE sentence aim to reduce 阅读全文
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question：How to alter department in PMS system 1.Use generally method modified department； update emp set deptno='department code' where empno='employ 阅读全文
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First, please use System File Checker tool to troubleshoot(诊断) this issue. If the issue persists, import the following registry key and see if the iss 阅读全文
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QUESTION:When you meet calculate fraction in oracle SOLUTION: 1.Check out their values respectively. the use sign of division. select count(1) from em 阅读全文
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Long Wei information technology development Limited by Share Ltd interview summary. I take part in company interveiw in November 13.2017.Get up in the 阅读全文
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DESCRIBE:When you mouse click right-side is open an application and click left-side is attribution. solution:you can following below step operator 阅读全文
