In Oracle learning, architecture is the top priority. At the beginning, we can grasp its physical composition, file composition, and various file composition from a macro perspective. The deeper the knowledge, the better. Problems encountered in actual work can be explained in the architecture. The architecture describes the framework of a system. Is the macro work of designing a system. This is like building a building. First, you should describe the
Oracle Study--oracle 12c RAC Install (ii)
Third, install the grid infrastructure
1. Install GI software
[Root@node1 grid]#./runinstaller
2. Run the script
[root@node1 cvu_12.1.0.2.0_grid]#/u01/app/orainventory/orainstroot.sh
changing permissions of/u01/app/orainventory.
Adding Read,write permissions for group.
Removing Read,write,execute permissions for the world.
Changing
Oracle Pen questions Oracle DBA face questions and answers (foreign companies)Oracle Database Pen Test DBAOracle Interview Pen test for international large companiesOracle Database DBA Interview Questions1. How many memory layers are in the shared pool?2. How did you find the RMAN catalog if a particular archive log has been backed-up?3. How can I tell how much i
Tags: http using os IO file data for 2014Recently depressed character set July 31, 2014 16:32:58This article focuses on the following sections: How to view queries for Oracle character sets, modify set character sets, and common Oracle UTF8 character set and Oracle exp character set issues.I. What is the Oracle charact
Oracle has been installed many times in both Linux and Solaris, and almost never succeeded. At the beginning of the installation, I couldn't even see the installation page. Later, I could see the installation
Oracle has been installed many times in both Linux and Solaris, and almost never succeeded. At the beginning of the installation, I couldn't even see the installation page. Later, I could see the insta
Oracle442 application scenarios --------- physical structure of Oracle Database, oracle Database Application
------------------------- Physical structure of Oracle Database -------------------------------
Physical Structure of Oracle DatabaseOracle data is actually saved in the form of files, which are stored in addit
Similarities and differences between Oracle Enterprise Edition, Standard Edition, and other versions, oracle Enterprise Edition
For different development and deployment environments, Oracle divides the same series of Oracle databases into four versions: Standard Edition One, Standard Edition, and Enterprise Edition) a
ORACLE step-by-step explanation (Lecture 1) and oracle lecture 1
Oracle was not used for a long period of time due to work reasons. Recently, it took some time to learn and record what you learned so that you can consolidate it in the future (taking 10 Gb as an example ).1. ORACLE Installation and uninstallation (1)
Linux shell under svnserve-d-R + Directory For example: svnserve-d-r/svn start svn service.Access the SVN://192.168.0.120/KJCG test.Start Oracle:First, how to start the db instance1. Go to Sqlplus launch instance [[email protected] ~]$ su-oracle--"Switch to Oracle User"2. Password: [[email protected] ~]$ lsnrctl start --"Turn on monitoring"Lsnrctl for linux:version 10.2.0.1.0-production on 14-oct-2009 1
1. Oracle introduction Oracle is the first word for English translation of Oracle (oracleboneinscriptions) Unearthed from Yin Yu. Oracle is the world's largest supplier of information management software and services. Founded in 1977, Oracle is headquartered in Redwoodshore,
I. Trajectory
Ii. Oracle Introduction
Oracle is now the world's largest database provider,Programming LanguageProvider and application software provider, which is equivalent to Microsoft.
Oracle is known as the oracle in ancient Greek mythology. It refers to the darling of God. In the period of business and we
I. Problem Description
Installation environment: Oracle Linux 6.1
Database: 10.2.0.1
When Oracle 10g RAC is installed, an error is reported when root. Sh is executed on the first node, as shown below:
[Root @ Rac1 ~] #/U01/APP/10.2.0/GRID/root. Sh
Warning: directory '/u01/APP/10.2.0' is notowned by root
Warning: directory '/u01/app' is not ownedby Root
Warning: directory '/u01' is not owned byroot
Checki
Lab environment: Oracle 11g R2 RAC (11.2.0.3.5) Oracle Enterprise Linux 5.6x86
1. Create an ASM disk group and mount the disk on two nodes. Then, partition the disk on the first node. [root @ Rac1 ~] # Fdisk-ldisk/dev/SDE: 2147 MB, 2147483648 bytes255 heads, 63 sectors/track, 261 cylindersunits = cylinders of 16065*512 = 8225280 bytes
Device boot start end blocks ID system/dev/sde1 1 261 2096451 83 Linux
Cr
Label:First mapping one, creating "project"Designer-Projects, click the Insert item icon, In the Project dialog box, under the Definition tab, enter the project name, such as SAKILA_DWH, to save Second, import knowledge moduleProject → knowledge module → Right-click import Knowledge Module File import Directory: Oracle\middleware\oracle_home\odi\sdk\xml-reference
Reverse Engineering Knowle
Tags: multi-line position requires level ODI connect from Func EvelExample:Select Regexp_substr (' 1,2,3,4,5 ', ' [^,]+ ', 1, level)From dualConnect by Level Interpretation:The REGEXP_SUBSTR function is formatted as follows:function Regexp_substr (String, pattern, position, occurrence, modifier)__SRCSTR: A string that requires regular processing__pattern: Regular expression for matching__position: Starting position, starting with the first character o
Tags: statement level to ODI optimize client physical not NSIsQuery Baseline information: Sql>select sql_handle,sql_text,plan_name,origin,version,created,last_modified,last_executed,last_verified, Enabled,accepted,fixed from Dba_sql_plan_baselines; No rows selected Sql>alter system set Optimizer_capture_sql_plan_baselines=true; (Turn on auto capture) System altered. [email protected]>CREATE TABLE t3 (id int); Table created. [Email protected]>insert to
Tags: ODI map setup causes query DAO needs to be colorFirst, when we need to process SQL statements in XML format, we often use symbols such as Such problems often need us to deal with in Ibatis or in a custom XML-processing SQL program. In fact, it is very simple, we just need to replace the following to avoid the above error:
Original symbol
>
>=
‘
"
Replace symbol
The recent use of ODI, where a join component involves several common types of joins, organizes the differences between the lower cross-joins and natural joins. I. OverviewA connection of two tables is established by linking one or more columns in one table to columns in another table. The expressions used to connect two tables make up the join condition. When the connection succeeds, the data in the second table is connected to the first table and a
When learning about the basic architecture of Oracle databases, I have learned about the storage structure of Oracle. Logically, Oracle data is stored in tablespaces and physically stored in datafiles. A tablespace can belong to only one database (a database can contain multiple tablespaces), including one or more data files. Tablespace can be further divided int
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