[Oracle]-Performance optimization tool (2)-ASH

Ash and awr relationships Ash is based on v$session, sampling once per second, recording events waiting for an active session. Inactive sessions do not take samples, and sample work is done by the newly introduced background process MMNL.Ash memory

Oracle AWR reports Auto-generated and FTP scripts

The script consists mainly of the following parts:Awr.sql the script that is used to execute in Sqlplus, which is found directly from the Web.Awr.sh is used to call Sqlplus to generate an AWR report.Ftp.sh is used to package and compress the AWR

Oracle's Numer type corresponds to the c,c# data type

has recently been working on an Oracle database-related program.The correspondence between the number type of Oracle and the C language, the C # language type, has been found on the network for a long time, and no explanatory text has been

Use of Oracle cursors

1. What is a cursor?A: A cursor is a data buffer opened by the system to the user, which holds the execution result of the SQL statement.Each cursor has a name that the user can use to extract data from the cursor and assign it to the variable.2.

Dynamic transformation and differentiation of Oracle Shared and private mode (reprint)

has not been dedicated to share the interchange to find out this article http://blog.csdn.net/tianlesoftware/archive/2010/06/26/5695784.aspx, let me practice a, do understand a lot. Most of the following are transferred from the link, the collection,

Oracle returns result set

New project start want to use stored procedures to return the result set, the company often write, this only a few years to forget the almost, cost the eldest brother to do well. Leave a print for future review ...Oracle Returns a result set that

Job queue and queue scheduling in Oracle

One, start the process that executes the jobIn Oracle, it is a background process that uses the job queue of the job queue coordination process (CJQ0), which coordinates the database instance, to monitor the job table (job$) in the job queue and to

Oracle Client Download

Oracle provides a feather-level client, which describes how to install the configuration (using Instantclient-win32-10.2.0.3-.zip) to do the followingOracle provides 6 compressed package Oracle client downloads, respectivelyInstantclient-basic-win32-

Oracle data security makes your company's data information more secure

With the development of the economy and the continuous passage of time, now the amount of data required in the enterprise is constantly increasing, many times, the computer above the memory is not enough to use, then in the face of such a phenomenon,

How to change the Oracle sys password without remembering the Oracle Administrator password

1. Ensure that the following two articles meetA. Sqlnet.ora in Sqlnet. Authentication_services = (NTS) configuration is present, does not exist add this sentence;B. If your OS user belongs to an Oracle user group and does not belong, add the current

Oracle creates synchronization temporary tables through triggers and handles problems with query base tables through autonomous transactions

TriggerCreate or Replace TriggerTr_sync_bd_marbasclassafterINSERT or UPDATE onBd_marbasclass forEach rowDeclareV_cntinteger; PRAGMA autonomous_transaction; --Autonomous Transactionsbegin /** * Name:tr_sync_bd_marbasclass * DESC: Material

User interaction with Oracle DB detailed process

Interacting with Oracle DBThe following example describes the Oracle DB operation from the most basic level. This example illustrates an Oracle DB configuration in which the user and the associated server processes run on different computers that

Oracle DBA Responsibility, and personal need to master content

ORACLE DBA responsibility is basically equivalent to daily work.0. Database design1. Creation and management of schema Objects (table, index, etc.)2. Management of things, such as concurrency3. SQL Tuning4. User management, & Rights Management5.

Learn the skills Oracle should prepare

First, database skills: database architecture, Basic concepts and basic theory, database management, Backup, recovery, SQL Development, Plsql development, use of tools, and so on. operating system-related skills :theLinux/unixsystemthere should be

Oracle's PL/SQL Learning Notes data type (iii)

Oracle's PL/SQL Learning Notes data type (iii)Variables are most frequently used in all programming languages. As a process-oriented database programming language, PL/SQL also requires variables, which can be used to pass the parameters required by

Database migration from Oracle to MySQL

PrefaceA framework for a reporting system such as ExtJS + Spring + Oracle was previously built. Because of the requirements of other departments, the framework is also required to make some special customizations.But one problem is that Oracle's

Atitit.sql server2008 Export Import Database large table file ... Oracle MySQL

Atitit.sql server2008 Export Import Database Large table file ...1. Files exceeding 80M are not executed in Query Analyzer 12. Oracle, MySQL large file import 12.1. Using SQL file 12.2. Using dmp binaries (Oracle only) 12.3. Other export txt,excel

Oracle ora-12541:tns: No Listener

Background: My own machine to do Oracle server, the other machine can ping my machine, but JDBC is not even, and later with Plsql even appear no listening program ....After I reinstalled Oracle yesterday, there was a ora-12541:tns when connecting to

Introduction to Oracle's PL/SQL Learning notes (i)

1. What is PL/SQL?PL/SQLIt is also a programming language called the Process SQL language (procedural language/sql). PL/SQLis aOracle DatabaseAn extension to the SQL statement. Added to the use of ordinary SQL statementsProgramming languagesthe

Learn the skills that Oracle should prepare

Learn the skills that Oracle should prepare First, database skills:Database architecture, basic concepts and basic theories, database management, backup, recovery, SQL development, PLSQL development, and use of tools. Operating System skills:Linux/

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