Oracle

First, Introduction Oracle partitioning is a technique for handling oversized tables, indexes, and so on. Partitioning is a "divide and conquer" technique that provides scalable performance for large amounts of data by dividing large tables and

Requirements Prerequisite: The data changes 1~2 times each year, the software estimated life cycle 50 years. Practice environment: Oracle Spatial. Glossary: spatio-temporal objects, snapshots. Spatio-Temporal object: The space and time range and

This article details the use of ORACLE commands to create databases and table spaces on the command line 1, the use of Super User login Sqlplus. 2, create the table space: sql> Create tablespace Test 2 datafile ' D:\oracle\oradata\test\test.dbf '

Introduction Oracle is the most widely used large-scale database management system, improve the efficiency of Oracle database system, is the premise and guarantee of the efficient operation of the whole computer information system. There are many

Since Oracle database backups are available in three ways, each with different recovery characteristics, you should integrate database and file system backups, integrate logical and physical backups. First, backup strategy 1. At the operating

Oracle developer is well known for its rapid data processing development, and its exception handling mechanism is also relatively perfect, not to be underestimated. 1, the advantages of the exception If there are no exceptions, in the program, you

We sometimes have a demand that the database can help us do something regularly. For example, we want the database to be able to aggregate data from one table in the library, or from some tables, into another sheet on a regular basis. Then we can do

A user-defined function is a block of code stored in a database that can return a value to the calling program. There are 3 types of arguments for a function: (1) in Parameter type: Represents an argument entered into a function that can only be

Dictionary Management table Space-DMT Local management table space-LMT The Dictionary Management table space (dictionary-managed tablespace, DMT), 8i previously includes a table space management model that can be used in the future, managing the

By comparing the partitioned table and the normal table, we simply tested the performance and maintained the index when the partitioned table existed, and finally we had to say The use of partitioned tables may not always improve performance,

Today, one of my buddies said that some of the modules in OA were invalid, check the system log, the original Oracle database temporary table space is full, noon meal time to the database restart (this way the easiest and not easy to make mistakes),

Links between databases are built on database link. To create a DB link, you must first set up the link string on each database server. 1, configure TNS, $ORACLE _home/network/admin/tnsname.ora 10gstandby = (DESCRIPTION = (address = (PROTOCOL =

The processor changed from 32 bits to 64 bits, and after the Oracle software was replaced, the db I chose to migrate the cold standby direct hook, and then the problem was encountered after the migration. After a successful mount of DB, errors such

(1) Hardware environment HP DL380 Server CPU 3.0*2 Memory: 4G hard drive: 100G (2) Software Environment Windows profession (the same way as a system using WINODWS XP 2003) Vmware GSX 3.0 (3) Installation VMware GSX 3.0 and a Windows profession

Parallel: Divide a work into several pieces and divide it into different processes and process them simultaneously. Process level Concurrency: Multiple sessions are accessed at the same time, which is usually the number of concurrent numbers.

For some distributions today, there are already three dynamic performance views available to DBAs (database Administrator, DBA) and developers, respectively, V$sql, V$sqlarea, and V$sqltext. These views can be used to collect statistical

A few years ago, when Oracle abandoned the client's forms, one of the built-in functions that disappeared was about passing arguments to the alert message function. If you are dealing with errors or missing input parameters (you should), part of the

I had no longer wanted to write similar tutorials, since it was a history test to call a tutorial, and for a rookie programmer like me, I only liked to share some of my experiences at will. Can not be a method, irrelevant to the idea of where to

Today a customer consults with their RAC environment, Emd_maintenance. The Execute_em_dbms_job_procs process starts frequently and consumes a lot of system resources. This task runs every minute, and it is always in front of the top. This job is

Oracle Emanager Database databases 1. Start OEM Dbconsole [Oracle@rac1 10.2.0]$ emctl start Dbconsole Oracle Enterprise Manager 10g Database Control Release 10.2.0.1.0 Copyright (c) 1996, Oracle Corporation. All rights reserved. Http://10.85.10.