Oracle

Here are a small write-up which should help those who still write plain Java JDBC code. I know we have some wonderful persistence frameworks like Hibernate this make ones life comfortable and the reality is we The still has to deal with the plain

First, the problem descriptionIn a software development project, you need to build 10 identical Employee Information table TB_EMPLOYEEINFO0~TB_EMPLOYEEINFO9 in the Oracle database and establish a stored procedure that inserts data into these 10

first, the basic concept1, transaction (Transaction): is the basic unit of concurrency control. The so-called transaction, which is a sequence of operations that are either executed or not executed, is an inseparable unit of work. For example, a

Oracle static monitoring and dynamic monitoring  A, what is registration? Registering is registering the database as a service to the listener. The client does not need to know the database name and the instance name, but only needs to know the

I.three-tier structure of Oracle database1, Client-client: Dedicated to access the database. such as sqlplus, PL/SQL dev, etc.2, the database server-oracle DBMS Management system, we install this. 3, the database instance, the default is to start a

The 3 files of the Listener.ora, Tnsnames.ora, and Sqlnet.ora are the 3 main files that are related to the ORACLE network configuration and are placed in the $oracle_home\network\admin directory. Where Listener.ora is related to the database server

Oracle Physical Storage ArchitectureThe database is actually composed of a bunch of physical files, there are 4 main:1. Control files2. Data file (Date files)3. Redo log file (Redolog)1. Control filesThe control file is the root file of the database

Oracle RAC is a clustered database that allows for seamless failover of load balancing and failures. How do you know that the RAC database has implemented these features, and then perform a functional test on this?One, load balancing testThe load

Delete Oracle Directory OCI.dll file cannot be deletedReady to unload 10g in the virtual machine today.Install 11g to study some new featuresUninstall the uninstall tool that is not available with your ownBefore watching warehouse's lecture

In the process of data migration, we face two common hang-live scenarios:1. The table cannot modify the Add field and cannot increase the length.2. Stored procedures cannot be overwritten. Scenario 1: Adding a field to a table hang

Then unzipClick setup.exeI'm using the default installation D drive.The database password is Wangxiaofei.NextFirst, on your own Windows 7 flagship edition, Oracle 11g prompts you for errors when "product-specific prerequisite condition checks":In,

The main function of the realization is that Oracle Log on successfully logged in user IP address, Logon failure log logon failed IP Address1, you need to set up a trigger to record the logon success of the client user'sIPAddressWe all know that the

Select Bs.username "Blocking user", bs.username "DB user",Ws.username "Waiting User", BS. Sid "Sid", WS. SID "Wsid",bs.serial# "serial#", bs.sql_address "address",Bs.sql_hash_value "SQL Hash", bs.program "Blocking App",Ws.program "Waiting App",

Index, index creation, modification, deletion2007-10-05 13:29 Source: User reviews 0 Views 2986IndexAn index is an object in a relational database that is used to hold each record, and the main purpose is to speed up the reading speed and integrity

Implement IndexOf and LastIndexOf features in Oracle SQL, substr and InStr Usage Blog Category: Oraclepl/sql instrsubstrlastindexofindexoforacle. Implementing IndexOf and LASTINDEXOF capabilities in Oracle SQL Oracle, SQL, INDEXOF, lastIndexOf today,

Mongolerman backup script and automatic deletion of duplicate backup files #!/bin/shsource /home/oracle/.bash_profileif [ -z $1 ]then echo "Please Input a number,Usage: 0|1|2" exitelse RMAN_LEVEL=$1fiexport ORACLE_SID=xxxxexport TODAY=`date

SQL: Oracle simple table, oraclesimple -- Oracle 9i data script address: $ oracle_home/rdbms/admin/utlsampl. sqlCREATE table dept (deptno number (2) CONSTRAINT PK_DEPT primary key, DNAME VARCHAR2 (14), LOC VARCHAR2 (13); create table emp (empno

ORACLE 11G trigger debug record Error: PLS-00201: identifier 'sys. DBMS_SYSTEM 'must be declared  1. The trigger content is as follows: CREATE OR REPLACE TRIGGER"LOGON_DENIED_TO_ALERT"AFTER servererror ON DATABASEDECLAREmessage VARCHAR2(168);ip

Oracle Database beginners opening Preface: For project reasons, I recently started to learn Oracle databases. Oracle is currently one of the most popular databases, with powerful functions and excellent performance. It is relatively difficult to

Opening for Oracle Database beginnersDue to project reasons, I recently started to study Oracle databases. Oracle is currently one of the most popular databases, with powerful functions and excellent performance. It is relatively difficult to learn.