Oracle

  It is not easy to process tens of millions of records in Oracle. The following describes how to insert and query tens of millions of records in Oracle.   Recently, we have implemented a project to perform insert and query operations on database

Importing and exporting Oracle Data imp/exp is equivalent to restoring and backing up oracle data. The exp command can export data from the remote database server to the local dmp file, and the imp command can import the dmp file from the local to

@ Echo offSetlocal enabledelayedexpansionTitle % date % time :~, 8% by LiaoNing Sunray Software Technology : Defines the database SID.Set SID = sryx254 : Defines an array of user names (separated by spaces, for example, user1 user2 user3)Set userArr

Author: skateOracle service process how to handle user process requests, see: http://www.bkjia.com/database/201202/120122.html To log on to the database and do things in the database, you must first connect to the database. Based on the connection

If two Table A (id, xx. xx ...), C (id, Cid, xx, xx ...), the following two methods can be used to pre-implement cascade deletion, cascade update, and data synchronization between IDs in C and IDs in:I.Uses the cascade deletion and cascade update

OEM:Http: // full computer name: 5500/em/ Sys/System managerScott tiger1. Forget the logon password of a user except SYS and SYSTEM.Log On As a sys (or SYSTEM) user.Conn sys/PASS_WORD as sysdba;Use the following statement to modify the user

Sqlplus special command 1. disc [onnect]: log out of the database, but not sqlplus; 2. exit or quit, exit sqlplus; 3.c[ hange]/old string/New String, replace the old string of the current row with the new string 4.cl[ ear] To clear cl buff [er] to

1. view the database size. Select pg_size_pretty (pg_database_size ('db _ name'); Through pgAdmin, we can see that PostgreSQL (pg_catalog) has the following two views: pg_stat_user_tables and pg_stat_user_indexes. You can use these to view the table

Create a tablespace in Oracle and the user's Oracle SQL code -- create a tablespace create tablespace epet_tablespace datafile 'e: \ app \ Administrator \ oradata \ coolick. dbf 'size 100 M autoextend on next 32 M maxsize unlimited logging extent

SQL code -- Create table (create partition table) Create table BILL_MONTHFEE_ZERO (www.2cto.com SERV_ID NUMBER (20) not null, BILLING_CYCLE_MONTH NUMBER (6) not null, DATE_TYPE NUMBER (1 ), ACC_NBR VARCHAR2 (80) partition by range (partition)

During the installation process, select create database, enter the user name, password, and so on. After installation is successful, the database is created successfully. In this case, log on through pl/SQL and select the normal logon prompt as

Oracle basic configuration Oracle 10g create an Oracle listener: [start] --> program --> Oracle-OraDb10g_home1 --> Configuration and Migration Tools --> www.2cto.com Net Configuration Assistant --> Listener Configuration --> next --> Add -->

Test on slow table data deletion: recently, I was bored with my watch and found that data deletion is far from faster than query. As a result, I made an experiment. The experiment content is as follows, and the level is limited. I hope it will serve

Environment: PLSQL Developer 7.1.5 Oracle 11.2.0 Oracle does not specify an automatic growth column as MYSQL or MS SQLServer does. However, in Oracle, the SEQUENCE can be used to automatically increase fields. In Oracle, SEQUENCE is called a

Auto-increment of primary keys in Oracle -- create table MSHOW _ SYSUSER_INFO (ID int primary key, ROLE_ID int not null, LOGIN_NAME varchar2 (50) not null, USER_NAME varchar2 (20), USER_PHONE varchar2 (20), USER_DEPARTMENT varchar2 (50), USER_ADDR

Example 1 create a table SQL> create table wdongh (www.2cto.com 2 id integer, 3 name varchar2 (60) 4 ); 2. insert data SQL> insert into wdongh values (1, 'wdh '); 1 rowinserted SQL> insert into wdongh values (2, 'xiaoming '); 1 rowinserted SQL>

Open the oracle installation directory and find the tnsnames file. ora file, usually in the path D: \ oracle \ product \ 10.2.0 \ db_1 \ network \ admin (oracle 10g) oracle11g also creates the following configuration in a directory similar to

Configuration relationship between oracle rac Server Load balancer and local_listener and remote_listener: configuration relationship between oracle rac Server Load balancer and local_listener and remote_listener. 1. Client implementation: directly

Restore the database environment by using the resetlog recovery control file: rhel 5.5, oracle10.2.0.1xmanager4.0 after backing up the control file, perform a series of operations on the database to close the database; restore the control file,

 Oracle plsql connection options File Name: tnsname. ora # Tnsnames. ora Network Configuration File: E: \ oracle \ product \ 10.1.0 \ Db_1 \ network \ admin \ tnsnames. ora# Generated by Oracle configuration tools.Www.2cto.comDEV =(DESCRIPTION