Oracle

As an Oracle DBA, you must know what Metalink is.Metalink is the official technical support site for Oracle, its url: http://metalink.oracle.com. Oracle uses this website to support customers around the world. According to statistics from Oracle,

Use Oracle SQL * Plus to analyze SQL I. Analyze and execute SQL statements SQL> set autotrace on; Description: Enables automatic analysis statistics and displays the running results of SQL statements. SQL> set autotrace traceonly; Note: Enable

Document directory Oracle Net manager is a small Component of Oracle client. In the Oracle Enterprise Manager Console, if an incorrect service is configured, it cannot be deleted. You must go to Oracle Net manager to view all your previous

Source: Network/Editor: getting started with programming: Unknown Because of its popularity and ease of use, VFP is well received by developers, but its security and stability are not perfect. In this regard, OracleThe advantage is

This method is similar to method 2. It only uses PREPARE statements and cursors, so that dynamic SQL statements can process query statements that return multiple rows. In fact, if the dynamic SQL statement to be processed is a query statement that

[From] http://www.chinaunix.net/jh/19/594396.html   I have seen many people talking about issues such as TNS or the inability to log on to the database. I just summarized the following.First, the network structure of Oracle can be combined with

Single-record functions in SQL 1. ASCII Returns the decimal number corresponding to the specified character; SQL> select ascii ('A') A, ascii ('A') A, ascii ('0') zero, ascii ('') space from dual; A ZERO SPACE------------------------------------65 9

SQL Server connection strings SQL ODBC connection strings Standard Security: "driver = {sqlserver}; server = your_server_name; database = your_database_name; uid = your_username; Pwd = your_password ;" Trusted connection: "driver = {sqlserver};

I. Conditions for triggering DBWR Disk Data Writing 1. when a process scans the secondary LRU and primary LRU linked lists to find the buffer header that can be overwritten [idle buffer, if the number of buffer headers that have been scanned reaches

The relationship between Oracle sessions and processes is sessions = 1.1 * processes + 5 ----- experiment part ---- Microsoft Windows [version 5.2.3790](C) Copyright 1985-2003 Microsoft Corp. C: \ Documents ents and Settings \ Administrator> sqlplus/

I. Improve database performance 1. Use explain plan to check SQL statement Performance Specific operations: Generate a plan_table table Run rdbms \ admin \ utlxplain. SQL Explain plan set statement_id = 'statement1 'into plan_table For select * from

In Oracle databases, user permissions are divided into two types (here we do not discuss dba or dbopr permissions, but only the permissions of common users ), system Privilege System permission and User Table Privilege User data Table permission.　　1.

Oracle Shared Server (OSS) Notes (zt)========================================================== ==============================Tolywang (http://tolywang.itpub.net)Posted on: 2007.07.19Category: Oracle Database ManagementSource:

In my previous post, I introduced Oracle spatial to convert Geometry to a gml string (http://www.cnblogs.com/likehua/archive/2012/10/18/2730172.html), which mainly uses three functions get_wkt (), sdo_util.TO_GMLGEOMETRY (), and to_char (). In fact,

Trigger implementation is required for processing a business requirement in the project yesterday. The trigger involves triggering table operations after inserting, deleting, and updating. Operations in inserting and updating can be implemented

Oracle calls Windows dynamic link library. Call a function in the dynamic link library. Oracle creates an alias function or stored procedure (hereinafter referred to as a subroutine) to call a dynamic link library.This function or stored procedure

Document directory Tables and columns Integrity constraints View Sequence Synonym Index User Role Tablespace quota Configuration table Tablespace Data Files Segment Rollback segment 1. System Table System Parameters of the ORACLE

Use of Oracle import program Imp Oracle Import utility allows you to extract data from a database and write the data to an operating system file. The basic format used by imp: imp [username [/password [@ service]. The following describes common

Part 3 backup and recovery[Q] How to enable/disable Archiving[A] If archiving is enabled, ensure log_archive_start = true to enable automatic archiving. Otherwise, only manual archiving is supported. If archiving is disabled, set this parameter to

(I found it online. I cannot remember the original address. I will record it here and read it later)   Oracle Database customization is very powerful. Oracle not only allows users to customize their own functions, but also can customize their own