Oracle

Example 1: The tablespace data file is deleted by mistake.Delete all data files corresponding to the tablespace in the open state.Use alter tablespace... offline for recover offline tablespace in the open state.Use restore tablespace... to dump all

CBO learning --- Chapter 1 -- What do You Mean by Cost Chapter 2 meaning of Cost (What do You Mean by Cost ?) Two meanings of Cost (Cost/Cost): (1) the magic number generated by the explain plan tool (2) the actual resource consumption of SQL

Strange TNS-12541: TNS: nolistener OS: Microsoft Windows 2003 performanisedatabase: Oracle Database EnterPrise 11.2.0.1 memory: 1G August 13, 2013, is a special day, the sky is very blue, every corner of the city is filled with the scent of roses.

Today I'm using Oracle Data to import and export imp/exp sp2-0734: Unknown command starting with \ 'Imp ignores the default classification of the remaining lines, so let's look at the solution below. Sp2-0734: Unknown command starting with 'Imp

Data Guard provides the following three Data protection modes: Data Guard provides the following three Data protection modes: 1) Maximum Protection)The "maximum protection" here refers to protecting data from loss to the maximum extent, that is, at

Check whether the oracle database is in archive Mode SQL> select name, log_mode from V $ database;NAME LOG_MODE------------------------------------------TEST NOARCHIVELOGSQL> archive log listDatabase log mode No Archive ModeAutomatic archival

Oracle Installation Error Preparing to launch Oracle Universal Installer from/tmp/OraInstall2011-11-03_12-53-01PM. please wait... [oracle @ localhost database] $ Exception in thread "main" java. lang. unsatisfiedLinkError:/tmp/OraInstall2011-11-03_12

When creating a knowledge base, it is obviously not enough to store articles with common VARCHAR2. There are only 4000 bytes in the partition, and there are not many words in it,The CLOB data type can store up to 8 GB of data. However, this field

The entire Oracle database is installed with Oracle11g. In the past, the NET Manager can be connected after being installed and configured in Oracle. But there was a small accident today. Let's summarize it here.(1) Installation check Problems To

Now we know how the optimizer reacts to these technologies and clearly shows the best applications of bitmap indexes and B-tree indexes.Place a bitmap index in the GENDER column, create another bitmap index in the SAL column, and then execute some

1. Add a text box to the corresponding position in the report page layout, which is generally DownloadRight-click a link in the PL/SQL editor and add the following content:Copy codeThe Code is as follows:Function B _13FormatTrigger return boolean

1. How to view the database Character Set [A] database server Character Set select * from nls_database_parameters, which is derived from props $ and indicates the character set of the database.Client Character Set environment select * from

Prerequisites:Database Table DM_xzqh example (partial ):Copy codeThe Code is as follows:DM MC230000 Heilongjiang Province230100 Harbin230101 municipal jurisdiction230102 daoli District232700 Daxinganling230103 Nangang District230104 road External

Insert into testtable (recordnumber, currentdate) values (I, sysdate );Print '';Select @ I = @ I + 1;End;After comparison, we can see that it is different.The command structure in plsql isDelacreDefine statement segmentsBeginExecution statement

In an application that inserts data using SQL statements in a group, we may encounter the need to insert large data, for example, when we need to insert fields with more than 4000 bytes in oracle, if we use a simple grouping SQL statement to insert

Method 1: X: \ oracle \ ora81 \ bin \ wrap iname = XXX oname = XXXMethod 2: 9i uses wrap to encrypt the stored procedure in win2000. For 10 Gb, you can use the encrypted package dbms_ddl.wrap or dbms_ddl.create_wrapped.11.5.1 use wrap to encrypt the

The solution is as follows:1-From the command prompt, stop isqlplus:C: \> isqlplusctl stop2-Assuming that you install oracle under C drive, run the following comands: C: \> set oracle_home = c: \ oracle \ product \ 10.2.0 \ db_1C: \> set java_home =

The ORACLE tutorial is: Oracle Database processing multimedia information. Citation:For a long time, multimedia information has been stored in the computer as files and managed by the operating system. However, with the development of computer

The ORACLE tutorial is: Analysis and Solution of common ORACLE error codes (1 ). When using ORACLE, we often encounter ORACLE errors. For Beginners, these errors may be vague andIf you do not know how to handle these errors at the moment, I will

The ORACLE tutorial is: Install Oracle in Linux. Due to the complexity of Oracle itself, installation in a Linux environment involves many factors. This article describes how to install Oracle 8.0.5 in Linux RedHat 6.0.I. Adjust the Linux core and