Oracle

SYS. All_constraints is defined as follows:CREATE OR REPLACE VIEW all_constraints (owner, Constraint_name, Constraint_type, TABLE_NAME, search_condition, R_owner, R _constraint_name, Delete_rule, status, Deferrable, deferred, validated, generated,

Deep understanding of Oracle RAC 12cJump to: Navigation, search Directory 1 Overview 2 Cluster parts management and fault diagnosis 3 Operational Practices 4 new Features 5 Storage and ASM 6

My Oralce Linux 6.5 is running on VirtualBox. Basic settings is 4G memory, 50G hard-disk, auto partition when install OL6.5.* * Following series of operations need root privilege.1. Edit/etc/hostADD your hostname. For example, your host name

"Oracle ocm11g is a physical and spiritual journey, this certificate is not only a symbol of identity but also proves your hard work, in this wish to challenge the friends of the good luck often in, if a friend wants to exchange test and training

In an Oracle database, trim is generally used to delete spaces on both sides of a string. In fact, trim can also be used to delete specified characters on both sides of a string. And trim specifies that the deleted string can only be a single

This article will describe the terminology that is commonly used in backing up databases and industry-defined terminology for reference and learning.Database related terms:(1) Cold backup:A cold backup is a copy of a data file, an online log file,

The main steps are as follows: 1. Download the Oracle thin client and unzip it (without installation) 2. Create an Oracle thin client configuration file (Sqlnet.ora, Tnsnames.ora) 3. Set the environment variable Tns_admin 4. Set Plsql to run as

Recently done a project, through the VC ODBC access to the Oracle database, on my computer can run normally, not on other computers, because there is no Oracle ODBC driver, unable to configure the Oracle data source. Most of the blog posts on the

Installing Oracle Database 12c Release 1 (12.1.0.2.0) under WindowsRecently, Oracle database 12c Release 1 (12.1.0.2.0)-Enterprise Edition needs to be installed due to the need to establish an ODI repository on Oracle databases.Software downloadHttp:

I. Introduction One of the most effective ways to familiarize yourself with Oracle's true application cluster (RAC) 10g technology is to access an actual Oracle RAC 10g cluster. There is no way to better understand their benefits than simply

Creating a stored procedure in oracle is a frequently used function. The following describes the differences between the stored procedure in oracle and other databases. If you are interested, take a look. The stored procedure created in oracle is

Method 1: As you all know, to connect to Oracle using PL/SQL, you need to install the Oracle client software. Have you ever wondered whether to directly connect to Oracle without installing the Oracle client? In fact, I always wanted to do this,

Oracle databases perform detailed operations on date data. The expression of date data involves the system time zone and time format. Oracle system functions such as to_date ('string', 'format') and to_char (Date, 'format') are often used. Therefore,

PL/SQL daily question: the difference between a CASE statement and a CASE expression: there are many different types of guinea pigs in the world, some of which have identifiable characteristics. For example, the "Abyssinians" skin has a pleated

Oracle access MySql via unixODBC by DBLINK: I asked how to connect oracle to remote mysql. I used hsodbc before, but I cannot display the fields with different attributes. oracle does not seem to have a transparent gateway for mysql. Is there any

Differences between ORACLE for update and for update nowaitI. Differences between for update and for update nowaitFirst, Oracle will not apply any locks if it is only select, that is, Oracle will not impose any restrictions on the data read by

Advanced query and difficulties of Oracle and Mysql SQLMysql query Yang Kai exclusive Channel OracleSQL 1. Connection query 1. Internal Connection is used to return all records that meet the connection conditions. By default, if no join operator is

Fine-grained auditing (FGA) is introduced in Oracle 9i. It can record SCN numbers and row-level changes to recreate old data, but they can only be used for select statements, not DML, such as update, insert, and delete statements. therefore, for

Problem description: when creating a view under the scott user, an error is reported: the permission is insufficient.(Other users and so on)Solution:Log On As A dba user[SQL]Copy codeThe Code is as follows:Sqlplus/as sysdba Grant scott the

The ORACLE tutorial is: A Brief Discussion on the Oracle database set replication method. PrefaceThe increasing demand for distributed applications requires a better distributed software environment, which constantly promotes the development of