Oracle

  Select name, value from V $ sysstat where upper (name) like '% dbwr % ';SQL>/ NAME value--------------------------------------------------------------------------Flash cache insert SKIP: dbwr overloaded 0Dbwr checkpoint buffers written

procedure PRC _ Save the configuration (prm_data in out long, prm_appcode out number, prm_error out varchar2) is XML xmltype;V_str varchar2 (1000 );Aclob clob;BeginPrm_appcode: = pkg_a_macro.def_ OK;Select Config into aclob from config where

Install the Oracle Instant Client in windows and use PL/SQL developer. Test System: Windows 7 Home Basic. (1) install Oracle Instant Client For installation of Oracle Instant Client, see post http://blog.csdn.net/zklth/article/details/7190035

There are two tables: update the Val value of the row with the same ID value in Table tab1 and that in Table tab2 to the Val value in table 2.Select * From tab1; Select * From tab2 The most common mistake is: Update tab1 set val =

The following is the official Oracle Database, which is listed here. We hope to reduce the search time. Download it now ~ Oracle Database 11g Release 1 (11.1.0.6.0) Standard Edition, Standard Edition one, and Enterprise Edition

There are many methods to migrate data from SQL Server 2000 to Oracle recently, but they have their own advantages and disadvantages. The first method is to use DTS provided by ms SQL Server for migration, which is very useful. However, fields of

Reading the title of this article seems very common. You may ask: is there a problem with Oracle on Windows 7? The answer is: yes. After a while, I finally finished it today and shared it with everyone.   Windows 7 is used now. Since ORACLE data is

　Biee tool Installation Bi, BussinessIntelligence business intelligence. This concept is a bit overwhelming, every applicationVendor is gaining popularity. The basic principle of Bi is to implement OLAP (Online Analytical Processing Oriented to Data

Single-record functions in SQL1. ASCIIReturns the decimal number corresponding to the specified character;SQL> select ASCII ('A') A, ASCII ('A') A, ASCII ('0') zero, ASCII ('') space from dual; A A zero space------------------------------------65 97

Document directory Rollback Read consistency Flashback Active Expired Unexpired Summary 'Normal' operation Out of free/expired extents Out of Undo Space Retention to large or undo to small? Fixed size Fixed size, out of unexpired

The temporary and undo files of the database do not need to be backed up. They can be restored after they are lost, and data will not be lost. 1. After files in the temporary tablespace are lost, they are automatically created after the database is

1. Set SSH tunnel on putty of localhost, for example: In this way, the port 1511 connecting to the local machine will be forwarded to port 1521 of remoteip. Click "add", and then log on to the remoteip through SSH. The sshtunnel is created. On

Document directory Application Analysis of indexes in Oracle Application Analysis of indexes in Oracle Indexing is the most effective way to improve data query and the most difficult technology to master, because correct indexing may increase the

TIPS: How to relink Oracle 9iAS on UNIX platform You can relink the majority of the 9iAS components by running the command 'relink all' from $ ORACLE_HOME/bin. For the latest 6i components in an enterprise install, I 've pulled the relinking

Oracle wait events are an important basis and indicator for measuring the operating status of oracle. The concept of wait events is introduced in oracle7.0.1.2, with approximately 100 wait events. In Oracle 8.0, this number was increased to

Oracle dynamic SQL Dbms_ SQL built-in package Native dynamic SQL Three common functions of native dynamic SQL Execute dynamic DDL or DML statements that do not contain Bound variables. Execute dynamic DDL or DML containing Bound variables

This article mainly explains 1. A new jdbc api in Oracle 10 Gb for convenient processing of large clob Fields 2. A sample program for processing large fields in Java A. What is clob? Lobs (large ojbects) is used to store unstructured data, such as

In Oracle 9i, reading char fields is inconvenient, which limits the use of char fields. to read the value of a field, use the following methods:   SQL> Create Table Test ( 2 a char (5 )) 3 tablespace users;   The table has been

If not exists (select * From DBO. sysobjects where id = object_id (n' [DBO]. [tablespaceinfo] ') and objectproperty (ID, n' isusertable') = 1) Create Table tablespaceinfo -- create a temporary table(Nameinfo varchar (50), -- table nameRowsinfo int, -

1. Use the thin driver in client software development In terms of Java software development, Oracle database provides four types of drivers, two types of client software for application software, applets, Servlets, and so on, the other two types are