oracle msp

Oracle undo complexity-oracle Core Technology Reading Notes 4, undo-oracle I. Overview Undo stores old data. For example, if you modify A record to change abc of column A to def, abc is saved in undo. There are two purposes: 1. if your transaction has not been committed, but you have modified column A, when someone else reads this data, they should not be able to

The Data Guard is Oracle's remote replication technology, which has physical and logical points, but in general it needs to have a separate system in place, where two hardware configurations can be different, but the software structure of the two systems is consistent, including software versions, directory storage structures, As well as the data synchronization (in fact, is not real-time synchronization), the two systems as long as the network is available, is a remote disaster-tolerant solutio

Oracle Easy Interface ToolBackground: I work on a remote machine, I need to call data to the Oracle 11g server, the Oracle client is already installed on the remote machine, but neither SQL Plus nor SQL developer and PL SQL developer are available (DBAs don't fix it for a few days). I have the server IP, Oracle user na

Tags: OracleSet power on (Linux) auto-start Oracle shutdown automatically shuts down Oracle1, switch to the root user, confirm that the startup file and the shutdown file is present[Email protected] bin]$ pwd/u01/oracle/product/10.2.0/db_1/bin[[email protected] bin]$ ls DbstartDbstart--sqlplus script to invoke when executing startup[[email protected] bin]$ ls DbshutDbshut--sqlplus the script to invoke when

Oracle redo complexity-oracle Core Technology Reading Note 3, redo-oracle I. Overview We know that in oracle, Every modification to a piece of data generates a redo (that is, redo, which records the modified content ). The purpose is to back up the modified data for future redo. Now there is a problem. Redo logs are ge

Because of the installation of Oracle 10G when there was a problem, and then asked roommates to send a copy of the Oralce 10g client installation package came up. It was possible to use Pl/sql, and then, in the case of a job need, to import an Oracle database backup from a colleague at a time, making IMP statement to import a 6550 error, the internet to check the reason is because the server and the clien

oracle| process Oracle Process Memory Architecture-how to view memory consumed by Oracle processes Last Updated:sunday, 2004-11-28 11:12 eygle It is often asked how the memory resources consumed by the process are determined under UNIX, and why the top tool is displayed very high. Some people say that the output of top is not accurate, this argument is not e

In Oracle Linux 5, we can use ORACLE validated configuration to accelerate the deployment of the Oracle environment. For more information about validated deployments, see: Oraclevalidated configurations installation instructions Http://blog.csdn.net/tianlesoftware/article/details/7061684 In Oracle Linux 6,

Some time ago I started to learn some basic knowledge about oracle. To facilitate exercises and operations, I installed an Oracle 10 Gb. After the installation is complete, the current database is directly deprecated. The card is terrible. The card can only be used for surfing the Internet. At that time, I was too busy to do anything else, so I never care about it. Together with the last Internet cafe. Thes

Oracle Study-Oracle RAC reconstruction Control File System Environment:Operating System: AIX5.3 Cluster: Oracle 10gR2 CRSOracle: Oracle 10gR2 Rebuild the control file in the RAC environment is similar to that in a single instance, but note the following steps:[Oracle @ aix21

[ORACLE] processing of oracle string objects, oracle string objects 2.1 char field, varchar2 Field (1) Defining the field length char (10) indicates that the field can contain 10 English characters (regardless of the encoding method, do English characters occupy 10 bytes ?), The physical space is always allocated with 10 characters. The variable length varchar (1

[ORACLE] processing of oracle time objects and oracle object processing 1.1 Use of oracle date objects (1) Create A date Field For example, Create table foo_7 (d1 date ); (2) Use the to_date function to insert a date object. To_date ('string', 'string' format ') For example, Insert into foo_7 values (to_date ('August 1

When a client of Oracle 9i or later is connected to a server of Oracle 8i or later versions, all the Chinese data queried becomes garbled. The query finally solved the garbled problem. The development tool is ASP. NET (C #) + Oracle, using system. Data. oracleclient to connect to the Oracle database. Solution 1 (the fi

Method 1: As we 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, because this client is so annoying !!! Not only will JDK be installed,

Label:Data Guard is a remote replication technology for Oracle, it has physical and logical points, but in general, it needs a separate system in a remote location, two sets of hardware configurations can be different systems, but the software structure of the two systems are consistent, including the software version, directory storage structure, and data synchronization (in fact, is not real-time synchronization), the two sets of systems as long as

Tags: file path off SQ server has a lock creat evo combo1.Oracle Default UserAccess to Oracle database only with a legitimate user accountOracle has several default database usersAll data dictionary tables and views in the database are stored in the SYS pattern. SYS users are primarily used to maintain system information and manage instances.Systems is the default system administrator who owns the internal

Oracle client connection remote Oracle service Chinese garbled problem, oracle Chinese When the local machine remotely connects to the remote Oracle service, the following retrieval statement is written: Select * from sys_employee Chinese garbled characters appear in the results, but the remote server's PL/SQL retri

3. C:\users\xiaofeng>emctl Start Dbconsole Oracle Enterprise Manager 10g Database Control Release 10.2.0.1.0 Copyright (c) 1996, Oracle Corporation. All rights reserved. Http://192.168.0.106:1158/em/console/aboutApplication Error opening logfile for output in nmeula_new Error opening logfile for output in nmeula_new Starting Oracle Enterprise Manager 10g Database

1.1DescribedGenerate a lot of "oracle_w000_9708.trc" and "ORACLE_W000_9708.TRM" under the "$ORACLE _base/diag/rdbms/$ORACLE _sid/$ORACLE _sid/trace" folder File.These files are generated too quickly. The Oracle root folder is running out of free space.1.2Possible causesThe possible reason for the "$

Oracle Oracle Product Services and Technology level introduction Many friends ask the genuine Oracle database products and pirated products are mainly different, in fact, from the product technology itself, the difference is not small, can download a database from the OTN website products, and then install the use of genuine and pirated the biggest difference i