Oracle

The Oracle tutorial is the comparison and analysis script between different Oracle databases. Oracle Database development applications often have such requirements for database administrators. We can compare the differences between objects in a

It is very easy for PHP to connect to oracle8 in Linux/Unix, but it is not easy in windows. after a long time of exploration, I found a reliable method and did not dare to enjoy it exclusively, We will announce it to everyone. Development

Http://qdlover.yeah.net An Oracle + PhP query example I didn't need PHP anymore, but a lot of friends asked me, so I made an example. For details about the function, please refer to the manual. In fact, Oracle functions are similar to others, but

With PHP, you can easily connect to the database, request data and display it on your web site, or even modify data in the database. MySQL is a very popular database, and there are many tutorials on PHP and MySQL on the Internet. MySQL is free,

Class db_ SQL { VaR $ DEBUG = false; VaR $ home = "/u01/APP/Oracle/product/8.0.4 "; VaR $ remote = 1; /* This query will be sent directly after the first connection Example: VaR $ connectquery = "alter session set nls_date_language = German nls_date_

paging test // How to split the result into pages, like 'limit' in MySQL?// ================================================ ==================================// Tutorial by Neil Craig (neilc@netactive.co.za)// Date: 2001-06-05// With

The ORACLE tutorial is: Oracle 9i allows you to easily obtain DDL statements for table creation and index creation. We all know that before 9i, It is very troublesome to obtain statements for creating tables and indexes. We usually use export with

The ORACLE tutorial is: Oracle constraints management script. As an Oracle database administrator, you may encounter such a database management requirement to stop or open the constraints and triggers for all tables under the current user (mode.

The ORACLE tutorial is: query the intersection of two data tables in Oracle. Oracle relational database management system is a popular relational database system in the world. It is an extremely powerful, flexible, and complex system. It is said

The ORACLE tutorial is: Dynamic Oracle cross tabulation. Oracle is the most widely used large database, while Oracle Database Design in the paradigm can greatly reduce data redundancy, making database maintenance more convenient. Unfortunately, data

The ORACLE tutorial is: Oracle Database Security Policy Analysis (2 ). SQL * DBA command security: If you do not have an SQL * PLUS application, you can also use SQL * DBA for SQL query permission-related commands that can only be assigned to the

The ORACLE tutorial is backup and recovery of the Oracle database. ---- When we use a database, we always hope that the content of the database is reliable and correct. However, due to computer system faults (including machine faults, media faults,

The ORACLE tutorial is: PL/SQL programming experience summary Developer Network Oracle. I usually encounter some problems in PL/SQL programming. I will summarize them in the form of Q & A for you to share. 1. Can pipelines be used to improve

The ORACLE tutorial is: Oracle Data Warehouse's hierarchical Manager Solution Developer Network Oracle. SummaryThis article describes the principles, steps, and restrictions of the layered manager, and combines it with Oracle Data warehouse to

To query the total number of fields in a table in Oracle, use an SQL statement orCopy codeThe Code is as follows:Select count (column_name) from user_tab_columns where table_name = 't_ B _AUDITOR'The number of fields in the specified table can be

DB2Copy codeThe Code is as follows:Create table T1(Id integer not null generated always as identity (start with 1 increment by 1 MINVALUE 1 no maxvalue no cycle no cache order ),...);Oracle (you need to create a SEQUENCE and a TRIGGER ):Copy codeThe

The relationship between tables is complex, and the data volume is large. Deleting one table by one will definitely cause a big problem. So I tried several solutions, and now I will summarize them.Method 1: Set grading and delete when creating

Dbms_metadata.get_ddl () is used to obtain the object DDL. Its usage is as follows.Note: In sqlplus, the following parameters must be set to better display DDL:Copy codeThe Code is as follows:Set line 200Set pagesize 0Sets long 99999Set feedback

AWR data consists of two parts:1) system load and performance statistics stored in the memory are mainly queried through the v $ view;2) The mmon Process regularly saves AWR data in the memory to the SYSAUX tablespace using snapshots, which are

1. nested loop Join)Nested connection divides the dataset to be processed into an External Loop (driving data source) and an internal loop (Driven Data Source). An External Loop is executed only once (first ), the number of inner loop executions