Oracle

The following describes the Import and Export instances.Data export:1. Export the database TEST completely, and use the User Name system Password manager to D: daochu. exp system/manager @ TEST file = d: daochu in dmp. dmp full = y 2 export the

Start the service: services. msc Step 1 enable the listener: lsnrctl start Step 2 export the original data operation Exp tc4_gctos_file/OK @ tcmg import operation: www.2cto.com Imp tc4_gctos_file/OK @ orcl import file: EXPDATA. dmp d: \

The oracle database query and index creation system contains a log table that records logon and logout. After a long time, the data volume is large and there is no historical table. When the client logs on, it will go to the database to query the IP

Generally, when a session is killed, run alter system kill session 'sid, serial # '; Administrator's Guide to say that when the session is active, alter system kill session only identifies the session as a killed or pseudo State and does not release

When starting the database today, the following problems occur: [root @ p570a2:/crs/app/oracle/product/crs_1/bin] # su-oracle [oracle @ p570a2: /oracle/app/oracle] $ sqlplus "/as sysdba" SQL * Plus: Release 10.2.0.4.0-Production on Tue Jan 5 11:53:42

The ORACLE listener service stops again after it is started. "OracleOraHome81 TNSListener service stops again after it is started,Some services are automatically stopped, if they have nothing to doCause: the ip address obtained by the wireless

The Oracle Shared Pool (Share Pool) belongs to SGA and is composed of library cache and data words.Data dictionary cache. Database cache www.2cto.com Oracle import to database the purpose of High-speed cache is to share SQL and PL/SQL code. When the

Hibernate oracle ORA-02291: violation of the complete constraints of the problem: do a small experiment, oracle database, using hibernate as the middleware. An error that always throws a foreign key constraint when saving many-to-many relationships,

Oracle high water level (HWM) problems in oracle high water level (HWM) find a table with a large number of records, before 1 million, such as table test1. Create table test2 as select * from test1 where 1 = 2; insert into test2 select * from test1;

Data loss caused by incorrect Excel column format during database migration-Oracle-Datapump cause: export data from the old SQLServer database to Excel and save the data as a file in DBase 3 format using Excel, use Datapump to change DBase III (*.

ORACLE stress testing Tool orion 1, feature overview ORION (Oracle I/O Calibration Tool) is an independent Tool used to calibrate the storage system I/O performance of Oracle databases. The calibration result is of great help for understanding the

Oracle Stored Procedure return record set oracle Stored Procedure return record set, the key is to use a cursor. We certainly have a lot of contact with database cursor. We can use OPEN, FETCH, and CLOSE operations to control the cursor for various

How to customize your SQL * plus environment SQL * plus is simple, powerful, and ubiquitous. What does SQL * plus mainly do? 1) autotrace 2) programming SQL * plus will automatically run glogin. SQL, which contains the global default settings. You

Oracle wallet usage and maintenance-oracle logon to oracle wallet with no password starts from Oracle10gR2. Using Oracle Wallet allows any user to log on to the database without a password (non-operating system authentication ), this is very useful

Usage of LTRIM, RTRIM, and TRIM in ORACLE:1. LTRIM (C1, C2)Both C1 and C2 can be strings, for example, C1 is 'Miss Liu ', C2 'misl', and so on. This is the first difference from SQL SERVER. If you remember well, the LTRIM of SQL Server only has one

Oracle daily Statistical Statement -- Create TABLE TestCTEATE table test (id number not null, modifiedtime date not null) -- count SELECT TO_CHAR (T. MODIFIEDTIME, 'yyyy-MM-DD ') TIME, COUNT (*) countfrom test t www.2cto.com -- the query condition

In view of the compatibility of Oracle10g with win7, I use the Oracle11g database for installation and configuration. Download the installation package from the Oracle Official Website:Decompress the package at the same time. It is best to disable

Oracle command to create a primary key foreign key 1. create a student table [SQL] SQL> create table t_stu (2 stuid number (10) primary key, 3 stuname varchar2 (20) not null, 4 stusex varchar2 (2) default 'male' check (stusex in ('male', 'female ')))

View comprehension in Oracle 1. View overview view is actually a query SQL statement used to display relevant data in one or more tables or other views. The view uses the results of a query as a table. Therefore, the view can be viewed as a stored

Two temporary tables are created for filtering duplicate data records by SQL (Oracle), and different fields are used as the query example: [java] create table table1 (id int, ip varchar (15), city char (20); www.2cto.com insert into table1 values (1,