Oracle

One, cold backup 　　 A cold backup occurs when the database has been shut down properly and provides us with a complete database when it shuts down normally. Cold backup is a statement that copies critical files to another location. The fastest and

--Note: This article is for Oracle only and does not have a libraryOne: Put a readhat in the virtual machine 4systemTwo: With IPThe following IP addresses are provided:Three: Build user groups, usersNote: Oracle users should have the same

Background:As a programmer, in daily work, our computers often need to run many programs at the same time, such as Eclipse, browser, Instant messenger, etc., and often need to open several Office documents or PDF documents. At this time your memory

Disclaimer: This article transfers from the network article, reproduced this article only for the personal collection, shares the knowledge, if has the infringement, please contact the blogger to delete.The original attention _ salute _ Call Chi

A problem has recently been addressed because of a hit ORA-600 [kole_t2u], [description], bugs causing a large number of udump files to be dumped in the Cdmp directory,These cdmp then burst the local disk space, triggering ORA-7445 [_MemMove () +64]

Creating tablespace Create tablespace examination//CREATE table Space examinationdatafile ' c:\Oracle\zhangwei\examination.dbf '// The file location associated with the tablespace (to manually build the folder in advance) size 100m//file, do not

On the win platform, you need to use Plsql developer access to the same host Oracle,plsql is not supported 64-bit, you need to set the Oracle_home and OCI address, while configuring Tns_admin to Oracle 32-bit clients,However, this can cause Oracle

There are a number of different Oracle and SQL Server locations.Personal deepest experience is that the stored procedure returns the result set, and the direct select query in SQL Server is OK, Oracle is not.Here, we use the simplest example to

Because the alarm log file is very large, and every day should check the alarm log (see if there is no "ora-", "Error", "Failed" and other error messages), so want to find a more convenient way to see the day alarm log what errors.On the internet

The Oracle database backup feature, which was implemented early today, was written at the University stage design:Import java.io.file;import java.io.ioexception;/** * Oracle Database Backup * * @author Gaohuanjie */public class Oracledatabaseback Up

Solaris under Oracle RAC ORA-09925 Unable to create audit--no spaceReceived development response, sqlplus or Developer tools Landing Database error, unable to login, as follows:650) this.width=650; "title=" Qq20140806151657.png "src="

About _external_scn_rejection_threshold_hours parameters and SCN headroom patch issues on Oracle DB 11GR2 releaseFrom:Installing, executing and interpreting output from the "Scnhealthcheck.sql" script (document ID 1393363.1)1th:In addition to the

Mesh RecordDirectory ... 31 description ... 32 Exporting DMP files ... 33 Importing DMP files ... 53.1 Environment Preparation ... 53.2 Performing import ... 61 descriptionDMP files are data backup files for Oracle database, execute Oracle Database

Oracle 10g and later versions have a new feature that automatically adjusts the undo retention time, which is much simpler to manage, for auto-scaling (Autoextend on) undo tablespace, Parameters Undo_ The retention is set as the lowest threshold for

1. Create a table spaceFor example:(1) The table space is named Myplace;(2) Data file path is E:\oracle\oracle_home\oradata\myspace(3) file name is MYDBF.DBF, space size is 32M(4) Set table space Auto-expansion, 32M each time, the maximum space is 20

"Introduction to this article"Recently, because of the needs of a project, from zero to learn from Oracle, now learn to share a record of things.The first is the installation, in the WIN8 installed 10G has failed, online various methods have tried,

Adding notnull fields to Oracle11g is faster than 10g-New Features Adding a not null field before 11g is very slow, and it is very fast after 11g. We will first perform a test and then explore the principle. SQL> select * from v $ version;BANNER ----

Oracle table three connection methods (SQL optimization), oraclesql 1. NESTED LOOP For a small subset of connected data, nested loop connection is a good choice. The nested loop is used to scan a table. Every time a record is read, it is searched in

Correct use of connection detection statements in applications in oracle databasesCorrect use of connection detection statements in applications in oracle databases This article is the original article, reprint please indicate the source:

ORACLE basic SQL statements-query, oraclesql statements 1. Common Query /* Query table data */Select * from STU /* Retrieve the first three rows of Data */Select * from stu where ROWNUM /* Fuzzy query */Select * from stu where stu_id like 'stu001%'