Oracle

Today, an Win2K server server, installed in the native Oracle9i database via ASP, found an error and could not connect to the database at all. The error description is as follows: Microsoft OLE DB Provider for ODBC Drivers error ' 80004005

The code is as follows Copy Code ?Include "/maya/inc/dbconn.php";$sql = "Select Max (rownum) from xqhtest where id$stmt =ociparse ($gConn, $sql);Ociexecute ($stmt);Ocifetch ($stmt);$rowcount =ociresult ($stmt, 1);Ocifreestatement

Oracle databases sometimes have intermittent client-side connectivity failures that are similar to the following error: ORA-12519, tns:no appropriate service handler found It is possible that the current number of connections on the database has

I want to do two sets of RAC between the data guard, because Datafile,controlfile, and even archivelog are stored on the ASM, direct copy of the data is a bit unrealistic, ASM disk is always used, so want to do from a library Rman full backup, Then

The use of case when (turn)--Simple Case functionA simple case expression that uses an expression to determine the return value. Grammar: The code is as follows Copy Code Case Search_expressionWhen Expression1 THEN

Hints is a mechanism provided by Oracle to tell the optimizer to generate an execution plan in the way we tell it. We can use hints to achieve: 1. Types of optimizer used 2. Cost-based optimizer optimization objective is all_rows or first_rows. 3.

Oracle's XML implementation?Oracle has implemented XML through the XML DB component of the database tutorial, which is the standard feature of the Enterprise and Standard editions. Oracle XML DB can be easily installed through the database

Recover deleted data First, create the simulation environment The code is as follows Copy Code Sql> CREATE TABLE Hr.xifenfei (ID number,name varchar2) tablespace xff; Table created. sql> INSERT INTO Hr.xifenfei values (1

! = does not equal select Empno,ename,job from scott.emp where job!= ' manager '^= not equal to select Empno,ename,job from Scott.emp where job^= ' manager '<> not equal to select Empno,ename,job from Scott.emp where job<> ' manager '> Greater than

One, table spaceThe Oracle database contains logical and physical structures.The physical structure of a database refers to a set of operating system files that make up a database.The logical structure of a database refers to a set of logical

Two days to write the sketch, the previous Java EE Environment Basic use framework. User registration and user authentication are now simulated using JDBC with Oracle stored procedures.First, add the necessary jar packageRequires JDBC to connect

An autonomous transaction (autonomous transaction) allows you to create a "transaction in a transaction" that can be committed or rolled back independently of its parent transaction. With an autonomous transaction, you can suspend the currently

Example 1:A) double quotation marks are required for column names that begin with "_" in the Query column. b) Use the "case" keyword to determine whether the pass is directly based on the score. create table Tbl_score (id number (4 ), -- id

Although there are many installation tutorials on the Internet, write a record of the installation process and the solution to the problem. 1 installation package Download: Go to Oracle's website: https://www.oracle.com/index.html

Reprint to: http://blog.csdn.net/aqszhuaihuai/article/details/7024551What does Oracle do when we submit an SQL statement?Oracle assigns a server process to each user process: service process (which should differentiate between dedicated and shared

Recently in a turn to the original use of Oracle, the intention to change the MySQL system, some of the common Oracle functions of the MySQL implementation by the way, mainly involved in the system (in fact, the original is specifically collated a

The stored procedure is written in Oracle10, with the following code:CREATE OR REPLACE ProcedureProc_insert (SNameinch varchar2, SAgeinch int, Sexetimeinch varchar2) is begin Insert intot_test (c_id, C_name, C_age, C_intime,

Database management of Oracle database explainingCourse View Address: http://www.xuetuwuyou.com/course/165The course out of self-study, worry-free network: http://www.xuetuwuyou.comFirst, the software used in the course: Oracle 11gIi. objectives of

I have been busy sorting out ISO documents over the past few days, and I don't know whether the database manuals I have maintained are complete. I just want to write a program to guide it out ;). The following program expddl. jsp can export the DDL

Since I/O waits for a large amount of data to be imported into the database, new storage cannot be mounted directly. You need to use nfs mounting and store redo to relieve the I/O pressure.Database version informationSQL> select * from v $