Oracle

Use PL/SQL to connect to Oracle without installing the Oracle client 1. Download a software named Instant Client package from the Oracle website. This software does not need to be installed and can be used as long as it is decompressed. :

Oracle undo management tipsOracle tips by Burleson ConsultingMay 4, 2010 Question:What are some tips for managing Oracle undo? Answer:Here are my notes onGeneral undo Management AndUndo Management in RAC , Here are other undo

Udisk database migration1. Create the tablespace used by udisk users-- Create user tablespaceCreate tablespace udisk datafile 'e: \ oracle92 \ oradata \ udisk. dbf'size 100 mUniform size 10 m; 2. Create a udisk user and set the initialization

How to Use PLSQL developer to import and export data from an Oracle database There are three ways to export table data using PL/SQL developer: Oracle export, SQL insert, PL/SQL developer The table structure and index structure remain unchanged

After the Oracle database is installed, Scott and other users are locked by default and cannot log on to the database using Scott. To unlock a user, you need to enter sqlplus and execute the following command: 1: SQL> ALTER USER username ACCOUNT

Research on spatial GIS data uploading methods in Oracle Spatial)   Source: http://blog.sina.com.cn/s/reader_45f260910100999x.html     Abstract: Oracle Spatial is used to store and manage spatial data, it is easy to solve problems in data sharing,

Oracle oo4o Recently, this project is VB.net and Oracle. Because of the customer's requirements, Oracle provides oo4o instead of traditional ODBC. The full name is Oracle Objects for OLE (oo4o ). According to Japanese data, this is the most

Exp parameter descriptionKeyword description (default) keyword description (default)--------------------------------------------------------------------------Userid username/password full export the entire file (N)Buffer data buffer size owner User

Constraints:It is used to ensure that database data meets specific business rules.Restrictions in Oracle include:Not NULL:Unique:Primary Key: PKForeign key: FKCheck:A. Not NULL: non-null constraint:If not null is defined in a column, data must be

Three default accounts:Sys change_on_install Network Administrator [as sysdba] system manage local administrator Scott tiger superuser Create users, authorize and revoke permissionsLog on to Oracle: sqlplus/As sysdba to start listening: LSNRCTL

-- Do not mix up the sequence... -- 1. Create a tablespace --Create tablespace sfwebloggingdatafile 'C: \ oracle \ product \ 10.2.0 \ oradata \ orcl \ sfweb. DBF 'size 32 m autoextend on next 32 m maxsize 2048 mextent management local; -- 2. create

  Cursor XX (a, B, c...) is SQL statementBegin Open xx;LoopFetch XX into A, B, C...Spell stringExit when XX % notfound;End loop;Close xx;   Bytes --------------------------------------------------------------------------------------------------------

Technorati label: Oracle Oracle uses utl_file packageCreate or replace procedure loadfiledata (p_path varchar2, p_filename varchar2) isV_filehandle utl_file.file_type; -- defines a file handle.V_text varchar2 (100); -- stores textV_name test. name %

Technorati label: Oracle Start with DBA _Dba_usersDatabaseUser InformationDba_segments table segment informationDba_extents data zone informationDba_objects database object informationDba_tablespaces database tablespace InformationDba_data_files

Install Ubuntu 10.10on Windows 7. download and run wubi.exe to install the software on any disk. Install oracle in Ubuntu... Hard work! But it's okay! I found a lot of information and made a lot of detours. The summary is as follows: First,

Log Files, also known as redo log files, record user changes to the database and can be used for database recovery. In practical applications, log file images are generally used. If one of the log files is damaged, log files of other images can also

A control file is a binary file that is automatically created when a database is created. It is used to record the database name, creation time, tablespace name, data file, and log file location. The control file is very important to the database.

I. control file backup When the database structure changes, immediately back up the control file. Once the control file fails, you can use backup to restore it. There are two backup control file methods: 1. Copy directly Example: SQL> alter Database

Alter any cluster: modify the permissions of any clusterAlter any indexAlter any role Modify permissions of any roleAlter any sequenceAlter any SnapshotAlter any tableAlter any trigger Alter cluster Modify permissions on clustersAlter Database:

Create user test identified by "test" -- create a test user Default tablespace users Temporary tablespace temp Profile default; Grant connect, create view, resource to test; Grant unlimited tablespace to test;     -- Administrator