Oracle

The SQL statement used to delete record duplication is one of our most common statements. The following describes how to delete record duplication in Oracle. It is helpful to you. 1. Search for redundant duplicate records in the Table. duplicate

There are many ways to query duplicate records in Oracle. The following describes the three most common methods for querying duplicate records in Oracle. The Oracle system prompts that a unique index cannot be created for the table code_ref, because

Oracle command line provides many functions. The following describes how to implement scheduled operations through Oracle command line. If you are interested in this, take a look. As we all know, generally, the operating system provides a method to

Oracle DatabaseIt can be said that the database industry occupies a very important position and leads the development of the database. This article is about Oracle Database debugging andOptimizationThis article mainly introduces Oracle DatabaseHit

Preface:Data Query, yesOracle DatabaseOne of the most important functions in operations; sometimes the query performance of Oracle databases is directly related to the operating efficiency of Oracle databases and the selection of Oracle databases. I

Introduction: DatabaseIs based onOracle DatabaseOfIndex, Related statements can quickly locate the record location without having to locate the entire table, which is convenient and quick, greatly improving the work efficiency of the staff. Whether

When we use a database, we always hope that the database content is reliable and correct, but due to computer system faults, hardware faults, software faults, network faults, process faults and system faults) the operation of the database system is

Oracle DatabaseOfOptimizationIt is one of the most important tasks in Oracle Database Operations. The optimization of Oracle Database can ensure that the Oracle database works normally.Unix environmentOracle Database optimization. I hope this will

We know that any programming language can handle exceptions, such as Java and C ++.Oracle DatabaseHow to handle exceptions? In fact, the handling of Oracle Database exceptions is actually very simple. This article givesPL/SQL Exception HandlingThe

InOracle DatabaseOperation, sometimes we need to view some information about the current user, including the information owned by the userRole PermissionsInformation, user tablespace, and user andDefault tablespaceThis article introduces the

InOracleDuring database operations, the following message is displayed during table operation: "The resource is busy. You needSpecify nowait"How can we solve this problem? This article introduces this solution, hoping to help you. The solution is as

OracleImplementation SystemResource Management allocation planAndSQL OptimizationThe connection scheme is what we will introduce in this article. Next we will introduce this part one by one. Implement system resource management allocation

Previously we introduced:Oracle 10 Gb Memory StructureIn this section, we will introduce the 10 Gb memory structure of Oracle.Sharing poolNext, let's take a look at this part. The third component of SGA is the shared pool. The shared pool is the

I have previously introduced:OracleDatabaseRMAN Incomplete recoveryThis document describes how to restore an Oracle database based on SCN.Log serial number recoveryTo help you. Log serial number recovery refers to restoring the database to the

Oracle has announced the launch of Oracle Commerce, a complete business solution that integrates Oracle ATG Commerce with Oracle Endeca. Oracle business software is designed to help enterprises provide consistent, relevant, and personalized

PL/SQL introduces the corresponding elements of procedural languages, such as conditional branches or loops. However, SQL itself is still nested as the subject, because the SQL engine is required to execute SQL commands, for PL/SQL programs, there

  Use the emp, dept, and other tables under the scott user as an example, and use sqlplus for demonstration.       First, create two blank e1, e2:   SQL code SQL> create table e1 as select ename, sal, hiredate from emp where 1 = 2;   The table has

  A very powerful function in Oracle is to convert functions written in Java into functions in Oracle databases. after conversion, we can use it like a common function. because Oracle is developed in Java, it is naturally compatible with Java. let's

Export all database objects under a user (do not export data) [sql] [lubinsu@200-168-1-2 dpump]$ exp lubinsu/lubinsu owner=lubinsu rows=n indexes=y compress=y buffer=65536 feedback=100000 file=/home/lubinsu/dpump/lubinsu.dmp

Write txt text in ORACLE and read data from Txt file to Modify Table Structure -- Create a table drop table test cascade constraints; create table test (a varchar (30), B VARCHAR (30 )); -- view the specific permission select distinct privilege from