Oracle

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

Many friends familiar with SQL server often make a mistake when they come into contact with oracle, that is, they always think that oracle also has the structure of update from. The from statement does not exist in the update Statement of oracle. We

Keywords: nlssort, Pinyin sorting, strokes, radical Before Oracle9i, Chinese characters were sorted by binary encoding. The sorting by pinyin, radical, and stroke function is added to oracle9i. Set the NLS_SORT Value 1. SCHINESE_RADICAL_M is

ORACLE provides two types of SQL optimizer: CBO and RBO. CBO was introduced in ORACLE7, but it was only mature in ORACLE8i. ORACLE has explicitly stated thatIn later versions (ORACLE 10G), RBO will no longer be supported. Therefore, selecting CBO is

OAF Study Notes-in-depth View of Action and Navigation Buttons Action/Navigation Buttons:Execute the action on this page.Navigate to another page.Execute the action and navigate to another page.Location of Action/Navigation Buttons:Single Text field,

Oracle applications framework is an oracle HTML-based business development platform. OAF includes a series of middleware running services and JDEVELOPER-based design-time extension tools.In the first few years of Internet development, the software

Create tablespace app_dataDatafile 'd: \ ORACLE \ PRODUCT \ 10.2.0 \ ORADATA \ EDWTEST \ app01.dbf' size 50 m,'D: \ ORACLE \ PRODUCT \ 10.2.0 \ ORADATA \ EDWTEST \ APP02.DBF 'size 50 mMinimum extent 500 kDefault storage (initial 500 kNext 500

1. ADDM provides an overall optimization solution. Based on AWR snapshots for a period of time, you can perform ADDM analysis to diagnose possible database bottlenecks during this period. It does not need to be installed, and the analysis results

I have prepared an article about using database cold backup to create physical standby. The cold backup of the database needs to be stopped, and it is not practical in the production environment, this section describes how to use rman for Hot

JDBC inserts data into the database to obtain the primary key. Currently, I have summarized two methods: 1. Applicable to databases with auto-increment columns (such as SQL-server and mysql)/*** Insert data to obtain the primary key* @ Param annex* @

Archive log is fullORA-00257: How to Handle archiver error. Connect internal only, until freed error1. Log On with the sys userSqlplus sys/pass @ tt as sysdba2. Check the location of the archiv log.SQL> show parameter log_archive_dest;NAME TYPE

1. Case StudyWhen the database is started, an error is returned:[Oracle @ localhost ~] $ Sqlplus "/as sysdba"SQL * Plus: Release 10.2.0.1.0-Production on Mon Sep 19 19:31:05 2011Copyright (c) 1982,200 5, Oracle. All rights reserved.Connected to an

An Oracle temporary table can have two types of temporary tables1. Session-level temporary tableSaves the data used by the current session, which exists during the data session. After each submission, ORACLE truncates the table (deletes all rows).

Oracle Database system is a complex software system. Without understanding its internal structure principles and relationships, it is impossible to design and Compile High-Quality application software systems or manage a complex application system.

Common Oracle table operations -- Create a table and specify the tablespace create table goods (id VARCHAR2 (20) primary key, name VARCHAR2 (20) not null, price number not null) tablespace jzy; -- view the table's tablespace select table_name,

Oracle Database ORA-01555 snapshots are old (undo tablespace: UNDO tablespace) UNDO tablespaces are used to store UNDO data, oracle writes the old data of these operations to the undo segment when performing DML operations, to ensure rollback or

Use the recyclebin retention policy to restore the deleted table oracle 10 Gb has a recyclebin retention policy. Now let's see how this policy works. Create a 15 M test table space [html] SQL> create tablespace tsp_test datafile

Optimization of the number of table scans has recently encountered some SQL optimization problems during interviews and study. The following is a summary of the following: information about employees whose salaries are higher than the average salary:

Explanation of the INTERVAL function in oracle interval year to month data type Oracle Syntax: INTERVAL 'integer [-integer] '{YEAR | MONTH} [(precision)] [TO {YEAR | MONTH}] This data type is often used TO indicate a time difference. Note that the

How to connect a client from one machine to another Server 1. Open cmd and enter netca. 2. Select Local net service name configuration → next. 3. Select Add> next. 4. enter the name of the oracle service on the server you want to connect to in