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--- The following is OracleClient
The following describes how to access the Oracle database through the ASP. NET page through System. Data. OracleClient,
In fact, it is relatively simple,
First, let's introduce the environment,
My machine is
Connect by prior recursive algorithm for tree data (parent/child data) retrieval in Oracle
1. Complete example:
Select PID, ID, name, deptid, level, sys_connect_by_path (name ,'/'), connect_by_root PID as rootid from t_wf_eng_wfkind where deptid
Oracle basic concepts and comparison with informix
I. ConceptsUser: informix directly uses the user management system of the operating system. Generally, root and informix are used as super operators to manage other users. Oracle has its own user
Oracle
1, uncompress and unpack downloaded files
One step procedure (uses less disk spaces and is faster):
Zcat lnx_920_disk1.cpio.gz | Cpio-idmv
Zcat lnx_920_disk2.cpio.gz | Cpio-idmv
Zcat lnx_920_disk3.cpio.gz | Cpio-idmv
Two Step procedure:
The racle database system is a complex software system. Without understanding its internal structure principles and relationships, it is impossible to design and Compile High-Quality application software systems or manage a complex application
Oracle Oracle Product Services and Technology level introduction
Many friends ask the genuine Oracle database products and pirated products are mainly different, in fact, from the product technology itself, the difference is not small, can
How to connect to the Oracle database and how to solve the fault-Summary highly recommended This article describes how to connect to Oracle Summary , Especially suitable Program Developers and Oracle cainiao How to configure to connect the client
Oracle's architecture is broadly divided into two parts: Instance (instance) and database.
Instance (example) : The SGA is mainly included in Oracle Instance and some processes (for example: Pmon, Smon, Dbwn, LGWR, CKPT, etc.). If a user's
IT Ninja Turtles oracle connect by usage review, Ninja Turtles oracle
First use the emp table of scott.The emp table has one field: empno (employee ID) and mgr (Superior manager ID)Below are all the data in the table
1
select *from emp
In recent times, many netizens raised questions about Listener Configuration, and the Client cannot connect to the Server ). This article briefly introduces the Listener Configuration and provides PLSQL
In recent times, many netizens raised
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