Summary of basic Oracle Functions

(1) character Functions Upper Select upper ('abcde') from dual result: ABCDE   Lower Select lower ('abcde') from dual result: ABCDE   Initcap Select initcap ('aaa') from dual result: AAA Select initcap ('aaa') from dual result: AAA

Oracle notes (8), PL/SQL advanced applications (cursors, stored procedures, functions, and packages)

I. cursorIi. Stored ProcedureIii. FunctionsSimilarities and differences between processes and functionsIv. Packages I. cursorA cursor is a PL/SQL control structure that can explicitly control the processing of SQL statements to facilitate the

Oracle notes (10), views, synonyms, Sequences

I. View2. SynonymsIii. Sequence I. ViewA view is a stored SELECT statement that displays data. You can use a view to restrict access to rows, columns, or update table content. 1.1 base tableA table that makes up a view is called a base table. In

Manual and automatic Oracle Database startup

1. Manual start method: $ ORACLE_HOME/bin/LSNRCTL start The listener continues to run after it is started. Sqlplus/nolog SQL> Conn/As sysdba SQL> startup The database has been started... 2. automatically start the database Automatic

Oracle RMAN vs. Export?

Http://www.dba-oracle.com/t_rman_export_expdp.htm Question: I 've been using data pump (the export utility) to backup my database, but I wonder if I shocould be using RMAN instead. they both do backups, so what's the advantages of each? Answer:

Beginner C # + ASP. NET + Oracle Memorandum

In Asp.net, how do I press enter to trigger the event of the specified button? Hypothesis: Solution: On the. ASPX page, add: Add the following in the page_load event:

Oracle Database concepts

The function can be implemented in the frontend-backend-database. Generally, a function is stored in the frontend or backend for processing, it is often neglected to be processed on the database. In fact, data provides many objects that can

First knowledge of Oracle 11g

I don't know how to configure it after the installation is complete. Today I 've been playing around for a long time. Finally, with the help of a buddy, PLSQL is successfully connected to the server. But I still don't know about Oracle, so I have to

About resolving Oracle login: ora-12154: TNS: failed to parse the specified connection identifier

Prepare to start learning oracle on May 1So today I planOracle 10gInstall. After the installation is complete, test whether the job works normally. During installation, the configured global database isTMT. HoweverSQL plusUsername:Scott, Password:

How to unlock Scott after installing Oracle 10 GB

DBAs often unlock oracle users in their daily work.ArticleThe command line is used to unlock oracle users. Several Simple unlock statements can be used to unlock oracle users. The specific process is as follows: Scott users are locked by default,

Arcsde9.2 Remote Installation (Oracle)

After more than half a day, I finally connected succeeded and recorded several problems as follows:Installation environment: Install the Oracle database on Windows, and install the Oracle client and arcsde9.2 on WINXP (which can also be separately

Oracle 10g 2.01

Username: SYS password: change_on_install Username: system password: Manager Username: Internal password: Oracle Username: Scott password: Tiger 2.1 uninstall the Oracle server 1. Stop all Oracle services. Start"Program> Oracle Installation

Oracle network service and network management (zz)

The Listener Configuration File is $ ORACLE_HOME/Network/admin/listener. ora:The format is as follows:(Description =(Address = (Protocol = TCP) (host = My-server) (Port = 1521 )))Client Network ConfigurationThe client network configuration file is $

Merge SQL Server, MySQL, and Oracle rows

Content imported from:Merge multiple rows and one column of data into one row and one column of data Http://topic.csdn.net/u/20090714/17/5FE6A0F7-CE78-4936-BE31-21D462236059.html Merge data in MySQL and Oracle

Oracle procedure return result set

Method 1: Package and procedure First, create a cursor for the returned result set: Create or replace package pkgaccq_tbuserprIsType result is ref cursor;End pkgaccq_tbuserpr; Use the result set defined above to multiply and put the result

Oracle Database automatic backup script

Create a file named r5bak. BAT and use NotePad to edit the following content: @ Echo offECHO is backing up the Oracle database. Please wait ......Exp userid = R5/R5 @ orcl file = E:/newbak/DB/R5 _ % Date :~ 0, 4% % Date :~ 5, 2% % Date :~ 8, 2%.

SDO_Geometry in Oracle Spatial

In ArcGIS, data is stored in Oracle using SDE, including binary Long Raw, ESRI ST_Geometry, and Oracle Spatial-based SDO_Geometry. The advantages and disadvantages of these methods are not the main research direction. We can get Help through ArcGIS

Oracle notes (7), PL/SQL Basics

I. Overview. PL/SQL Block Structure2. Control Structure (branch, loop, and control)Iii. ExceptionsIv. Compound variables (record) I. Overview. PL/SQL Block StructurePL/SQL is an extension of the SQL language of Oracle products. PL/SQL blocks are

Oracle -- http: // localhost: 5560/isqlplus cannot be opened

I am going to review oracle today. oracle was previously installed. I re-installed the system and probably re-installed the system, which has an impact on it. In the service table, I found that the lister item is missing. Therefore, oracle was

How to diagnose ORACLE Database problems: Common Errors

ORACLE errors are detailed in the ORALCE documentation, but the causes and measures are not detailed. This article focuses on how to solve these errors.    1 ORA-12571, ORA-03113, ORA-03114, ORA-01041    Feature: This type of disconnection error is

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