Oracle

I. Data Control statement (DML) section 1.INSERT (Insert the statement into the data sheet) INSERT INTO 表名(字段名1, 字段名2, ……) VALUES ( 值1, 值2, ……); INSERT INTO 表名(字段名1, 字段名2, ……) SELECT 字段名1, 字段名2, …… FROM 另外的表名; field values for string types must

We know that in previous versions of Oracle 10g R2, temporary files for temporary tablespaces are not automatically restored if you use Rman to recover the database. This has caused a series of problems, many DBAs forget to add temporary files

1.oracle the initial password after the installation is complete? Internal/oracle Sys/change_on_install System/manager Scott/tiger Sysman/oem_temp Initial default user and password for 2.oracle9iaswebcache? Administrator/administrator How do

Friends who recently saw a lot of novice Oracle on the Web or upgraded from an older version of Oracle to 10G asked how to build the library manually in Oracle 10G. Today is free, so the Oracle 10G in the process of hand-built library, for you to

The concept of a sequence: A sequence is a database object that can be used to generate a unique integer. The main code value is generated automatically by using a sequence. The value of a sequence is automatically generated by a special Oracle

Oracle 10g introduced a new table space type, which is a large file (Bigfile). It does not consist of 1022 files as traditional table spaces; a large file (bigfile) tablespace is stored in a single data file, while its data volume requires a larger

I. Description of the problem SQL Plus Worksheet is an SQL Statement editor for a window graphical interface, which is relatively sql/plus for users who prefer a window interface to a character interface. But after Oracle 8i, if Oracle 8i is

A medium-sized or large company is often comprised of geographically dispersed departments that typically require data sharing. For these shared data, it can be stored on a site that requires users to access from the site. The advantage of this

Project to prepare two of the same structure of data to different users, due to the large amount of data, continuous backup restore efficiency is very low, so consider creating a new database, the establishment of two SDE services. 1. New Database

Method One: Oracle's deadlock is very frustrating, summing up some bit of experience as a learning Note 1. Check which process is locked.Check V$db_object_cache view: SELECT * from V$db_object_cache WHERE owner= ' The owning user ' and locks!= ' 0 '

In today's rapid development of information age, day-to-day work, users often encounter the data in the Excel file and Oracle database in the data to each other, realize the operation of real-time data, but access to this information is not much. If

The most important new feature of oracle9i is the ability to dynamically modify almost all Oracle performance parameters. This allows Oracle experts to dynamically reconfigure the Oracle instance during the run-whether it is addressing a current

Abstract This paper describes the principles, procedures, limitations of the hierarchical manager, and combines with Oracle Data Warehouse to realize the effective storage, management of geo-data and rapid browsing of large range of data. keyword

Import java.sql.Connection;Import Oracle.jdbc.pool.OracleConnectionCacheImpl; /*** Connection Pool Management class*/public class Dbpool { /** Connection Pool * *private static Oracleconnectioncacheimpl pool = null; /*** Initialize Connection

In a RAC environment, logging into an instance can result in a GC global wait generation when the data being processed is completely unrelated to the data in the other instance's memory. This article describes a phenomenon. The environment is as

If the RAC environment after 10g has been installed, it should be no stranger to this tool. Runcluvfy.sh scripts are typically executed before the cluster and database are installed to check that the current system meets the installation conditions.

An attempt to import awr data on the test database caused a ORA-4031 error. The error message is: Sql> @?/rdbms/admin/awrload ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~

First look at an Oracle 10g next table to create the SQL, all default values: CREATE TABLE SYS. Qs （ USERNAME VARCHAR2 (BYTE) not NULL, USER_ID number not NULL, CREATED DATE not NULL ） Tablespace SYSTEM Pctused 40 PCTFREE 10 Initrans 1

Execute analyze table TT1 validate structure; error occurred while parsing the block corrupt on the table ORA-01498 has been bothering for some time, and has made a little summary of it today. Rman> BACKUP datafile 4; Starting backup at 2011-07-24

Some time ago in a migration of data pump and exp, found that the difference in efficiency is quite large. Here is an example of a simple comparison. This article describes ways to improve the efficiency of IMPDP import. The test in the previous