oracle oob

Oracle learning path (5) ----- General oracle data type operations, oracle ----- oracle1. Some common Operators Operator Meaning = Equal Not equal Less > Greater Less than or equal > = Greater than or equal + Plus sign - Minus sign

Original: http://blog.csdn.net/robinson_0612/archive/2010/04/26/5529239.aspx -- ===================================================== === -- Oracle instance and Oracle Database (Oracle Architecture) -- ===================================================== === /* For those who are new to Oracle databases, the two conce

Resume oracle.sh in/etc/profile.d/ The contents are as follows in Nls_lang setup encoding 1 oracle_home=/usr/lib/oracle/12.1/client642 c_include_path=/usr/include/ oracle/12.1/client643 ld_library_path= $ORACLE _home/lib4# RememberThis was the client Nls_lang not the server one5 nls_lang=6 Export Oracle_ho ME Ld_library_path Nls_lang Then modify the/ETC/INIT.D

, starting at m and intercepting N characters consecutively.---need to note: The database subscript is starting from 1!!!---n is truncated to the end of the current string if the number that is not specified or specified exceeds the actual character length that can be intercepted. n is the length.---if M is negative, it is intercepted from the countdown position. The number at the end cannot be negative.SELECT SUBSTR (' thinking in from dual;--->inSELECT SUBSTR (' thinking in from dual;--->in---

Oracle BASICS (9) Oracle architecture and oracle infrastructure 1. Oracle Architecture Overview: Oracle architecture refers to the composition, working process and principle of the database, as well as the organization and management mechanism of data in the database. To und

Oracle 10g AND Oracle 11g manual database creation case -- Oracle 11g System Environment: Operating System: RedHat EL6 Oracle: Oracle 10g and Oracle 11g Manual database creation is relatively easy to implement. In this case, we

1. Oracle Overview-Oracle Database, referred to as Oracle. Oracle (Oracle) is an object-relational database management system (ORDBMS) in the United States. Currently occupies a major share of the database market.-Oracle's history: 1977 Ellison and two friends, established R

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.Original LeshamiOriginal address: http://blog.csdn.net/leshami/article/details/5529239--========================================== --oracle Instances and Oracle Databases (

Oracle Cluster Concepts and principles (ii) Overview: write down the original intent and motivation of this document, derived from the Oracle Basic operating Manual of the previous article. The Oracle Basic Operations Manual is a summary of the author's vacation on Oracle's foundational knowledge learning. Then form a summary of the system, a review rev

Oracle 10g AND Oracle 11g manual database creation case -- Oracle 10g System Environment: Operating System: RedHat EL6 Oracle: Oracle 10g and Oracle 11g Manual database creation is relatively easy to implement. In this case, we w

Label:Oracle 11G RAC Database installation (eight) Overview: write down the original intent and motivation of this document, derived from the Oracle Basic operating Manual of the previous article. The Oracle Basic Operations Manual is a summary of the author's vacation on Oracle's foundational knowledge learning. Then form a summary of the system, a review review, the other is easy to use. This doc

--==========================================--oracle Instances and Oracle Databases (Oracle architecture)--==========================================/*For the first contact with Oracle database, two concepts that are easily confused are Oracle instances and

Tags: DBA RAM read-write management art SSE buffer temp tablespace UNIXReprinted from: http://blog.csdn.net/robinson_0612/article/details/5529239 An Oracle server consists of an Oracle instance and an Oracle database. That is: Oracle Server = Oracle Instance +

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

About Oracle ASM instances About Oracle ASM disk groups About grouping and failure groups About Oracle ASM Disks About Oracle ASM files About Oracle ASM instances The Oracle ASM instance is built based on the same technology a

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 learning notes first knowledge Oracle, oracle learning notes first KnowledgeDatabase Introduction A Database is a warehouse that organizes, stores, and manages data according to the data structure. SQL is the acronym of Structured Query Language (Structured Query Language.Definition 　　DatabaseTo put it simply, it can be regarded as an electronic file cabin

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,