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Redo Logs in an Oracle Database - DBArch Video 11
 
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This video explains the concepts of Redo Log Groups and Files in an Oracle Database. You will understand how Oracle Instance uses Redo Buffers and Logwriter to keep the redo in Redo Logs. Our Upcoming Online Course Schedule is available in the url below https://docs.google.com/spreadsheets/d/1qKpKf32Zn_SSvbeDblv2UCjvtHIS1ad2_VXHh2m08yY/edit#gid=0 Reach us at [email protected]
Views: 21501 Ramkumar Swaminathan
SCPT 8: Redo Log Files
 
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Oracle DBA Tutorials For Full Course Experience Please Go To http://mentorsnet.org/course_preview?course_id=6 Full Course Experience Includes 1. Access to course videos and exercises 2. View & manage your progress/pace 3. In-class projects and code reviews 4. Personal guidance from your Mentors
Views: 51577 Oresoft LWC
Oracle DBA, log switch,  Log writer, Redolog, log sequence number, 1e3
 
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Oracle redolog and logwriter background process
Views: 4041 hammadshams
Oracle Database11g tutorials 9 || What is archive log mode and how to enable archive log mode
 
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weblink: www.rebellionrider.com What is archive log mode What is noarchive log mode How to enable archivelog mode in oracle 11g How to enable archivelog mode in oracle 10g This SQL tutorial and Oracle database 11g tutorial for beginners will show what are ARCHIVELOG mode and noarchive log mode and how to enable archivelog mode in oracle database 11g or 10g Tool used in this tutorial is command prompt. This tutorial series is part of SQL expert exam certification training. if you are preparing for SQL certification you can use my tutorials. This SQL Tutorial is a part of free training. Copy Cloud referral link || Use this link to join copy cloud and get 20GB of free storage https://copy.com?r=j7eYO7 Contacts E-Mail [email protected] Twitter https://twitter.com/rebellionrider Instagram http://instagram.com/rebellionrider Facebook. https://www.facebook.com/imthebhardwaj Linkedin. in.linkedin.com/in/mannbhardwaj/ Thanks for linking, commenting, sharing and watching more of our videos This is Manish from The Code makers
Views: 98798 Manish Sharma
Oracle Tuning - Diagnosticando e corrigindo lentidão - LOG FILE SWITCH
 
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Oracle Tuning - Diagnosticando e corrigindo lentidão - LOG FILE SWITCH
Views: 903 Nerv
Oracle Architecture
 
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This video describes the best architecture of the oracle after trying more than times to Oracle structure I decided to produce an animated video let's start first with the database structure on the left side you have the client here on the right side you have to serve a two-year the server side is divided in three main structures to memory the logical structure and the physical structure so let's use SQL Plus application to provide you every step up a transaction will be using Scott sample schema it is important to note that the whole string is an alias and not a database name district will be compared to this alias inside of a file called pianist named doc or this file is similar to a DNS and with up pain all the necessary detail to reach a database server locally a user process will be allocated and will validate the connection through a listener the listener will be in charge to allocate a server process the user processes da link to the server process let's now execute our first transaction for this example we will execute an update first to state that will be validated we call this step the parsing this server process sense back to confirmation of the parsing that statement with be written into their share pool and the redo log buffer an execution plan will also be created it to the fair share Paul that database book they choose fought the transaction will be read and copy into the database buffer cache only that feel implicated in that transaction will be held it to a - segment till the transaction is completed we call those copies the before image a copy of this block will be duplicated with the updated feel this copy is called me after image a confirmation will be sent to to use a process the commit statement will complete the transaction and will be written into to redo log buffer to commit statement triggers the log writer process and we'll send all statement for the current transaction into the redo log file the before image into undo segment could be then deleted went that threshold up to undo retention parameters reach alaskan from Asian will be sent to the user process went to current law kiss Paul it generates a switch lock triggering at the same time the archiver process and to log sequence number the archiver will generate and archive the file with the content of the current loc a switch up with them trigger a checkpoint process that will incriminate the checkpoint number by applying this last number into each data file header the checkpoint process with finally trigger the database writer process enright the last image from that database buffer cache into thirty people
Views: 21408 Ezylearning
Oracle Redo log group status-  Simple Example
 
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This video explains about the ORACLE REDO GROUP STATUS This has 4 status  Current  Active  In Active  Unused These 4 statuses will be cycled whether Database is in Archive mode or No Archive mode.
Views: 180 Ezylearning
DBA losson5-Control file and redolog file
 
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create new control file add new group and redo log file alter and drop member redo lof
Views: 3202 ayman hamdan
Real-World Performance - 17 - Database Log Writer
 
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Check out the entire series on the Oracle Learning Library at http://www.oracle.com/goto/oll/rwp In this video, listen and watch Andrew Holdsworth, Vice President of Oracle Database Real-World Performance at Oracle Corporation, as he explains how the Database Log Writer affects performance. Copyright © 2014 Oracle and/or its affiliates. Oracle® is a registered trademark of Oracle and/or its affiliates. All rights reserved. Oracle disclaims any warranties or representations as to the accuracy or completeness of this recording, demonstration, and/or written materials (the "Materials"). The Materials are provided "as is" without any warranty of any kind, either express or implied, including without limitation warranties of merchantability, fitness for a particular purpose, and non-infringement.
Oracle username and password and Account unlocking
 
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all education purpose videos
Views: 286384 Chandra Shekhar Reddy
Oracle DBA Justin - How to reset the log sequence number in an Oracle database
 
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How to reset the log sequence number in an Oracle database
Views: 5234 jbleistein11
when checkpoint will occur in oracle database
 
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How to check current_scn number of database? ============================================= select CURRENT_SCN from v$database; select dbms_flashback.get_system_change_number from dual; select timestamp_to_scn(sysdate) from dual; how to check datafile header scn number? ========================================= select name,CHECKPOINT_CHANGE# from v$datafile_header; when checkpoint will occur? ============================ alter system switch logfile; alter database begin backup; alter database end backup; alter system checkpoint;(manual checkpoint) shutdown immediate;(when the database is down) what will happen when checkpoint occurs? ========================================= scn of datafile header will update;
Views: 3816 Praveen Biyyapu
REDO LOG - ORACLE
 
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Views: 96 STEVE GREY
Oracle DB - Multiplexing Redo Log Files
 
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Oracle DB - Multiplexing Redo Log Files Watch More Videos at: https://www.tutorialspoint.com/videotutorials/index.htm Lecture By: Mr. Parth Panjabi, Tutorials Point India Private Limited
Oracle 11g Multiplexing Your Online Redo Log Files
 
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In this tutorial i'm going to show you how to do Multiplexing Your Online Redo Log Files in Oracle 11g using command mode.
Views: 1578 OCP Technology
Log your putty session into text files
 
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https://dbagenesis.com/p/the-ultimate-putty-guide-using-putty-for-ssh PuTTY is a free and open-source terminal emulator, serial console and network file transfer application. It supports several network protocols, including SCP, SSH, Telnet, rlogin, and raw socket connection. It can also connect to a serial port. The name "PuTTY" has no definitive meaning.
Views: 4246 DBA Genesis
Oracle 10g Redo Log Files
 
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Session About Oracle 10g Redo Log Files and Archived files. How to manage and maintain Redo logs groups and files (Create, Add, Drop, Rename, Move and Switch)
Views: 3123 ITLecture
Oracle Tutorial in Hindi - How to Multiplex/Mirror a Redo Log File of an Oracle Database
 
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How to Multiplex/Mirror a Redo Log File of an Oracle Database... #Oracletutorialforbeginners #rmanrecoverytutoria #Oracletutorial11g #Multiplex/MirroraRedoLogFile by Lalit Saini....
Views: 5755 Oracle World
Oracle DBA, Adding  a redolog member to a group 1e4
 
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How to add members to redo log groups
Views: 1256 hammadshams
Oracle Tutorial For Beginners - Redo Log File Incomplete Recovery
 
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Hello guys in this tutorial i briefly explaining how to recover a redo log file from archive backup...its called a Cancel Based Recovery... #Oracletutorialforbeginners #rmanrecoverytutorial #RedoLogFileIncompleteRecovery By Lalit saini
Views: 3285 Oracle World
Oracle Database In RedoLog Buffer
 
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Every time user performs a DML, DDL or DCL operation, so its redo entries are also created. These redo entries contain commands to rebuild or redo the changes. These entries are stored in Redo Log buffer. Log writer process (LGWR) writes these redo entries to redo log files
Views: 188 Koenig Solutions
How to change Archive Destination in Oracle
 
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How to change Archive Destination in Oracle ======================================== Syantax ============= alter system set log_archive_dest_1='LOCATION=/home/Archive/' scope=both; =============================================== Hi Folks, Greetings!! I am professional part time oracle dba trainer and having good experience in oracle database administration. This is the right place to enroll yourself for Oracle DBA real time course. Please use following email ID for more details. Don’t hesitate to WhatsApp me any time. I will give you the best training and will create path to get DBA job easily. Enjoy the free YouTube video and connect with me for deep Oracle DBA knowledge. Mobile No : + 91 9960262955 (WhatsApp Number) EmailID: [email protected]
Views: 1210 ANKUSH THAVALI
Oracle DBA Justin - How to rename/move an online redo log file
 
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How to rename/move an online redo log file
Views: 5051 jbleistein11
قواعد البيانات 9 (Redo Log File,Archive Log File (Oracle DBA 11g Tutorial
 
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Oracle DBA 11g Tutorial Redo Log File , archive log file online redo log offline redo log file archive log file Log Switches
Views: 590 Ahmed Ybat
Oracle 11g Multiplexing Your Online Redo Log Files
 
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Multiplexing Your Online Redo Log Files in Oracle 11g using Enterprise Manager Database Control
Views: 3184 DBASoup
Oracle DBA Justin - How to mirror/multiplex online redo log files
 
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How to mirror/multiplex online redo log files
Views: 5891 jbleistein11
oracle tutorial for beginners - Redo Log File Recovery in Hindi.
 
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incomplete recovery of redo log files.
Views: 1604 OCP Technology
oracle location of alert log file
 
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http://dbacatalog.blogspot.com
Views: 1978 dbacatalog
Creative Oracle Redo Maneuvers - Seminar Intro
 
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Creative Oracle Redo Maneuvers teaches you how to push Oracle redo throughput to the absolute limit! There are a number of unusual and powerful maneuvers Oracle DBAs can do to reduce commit times, reduce log file sync and log file parallel write wait times. In a nutshell, improve performance when the system is bogged down with redo related issues. This seminar goes deep. Memory architecture and redo processing is explored through creative experimentation, statistical analysis and operating system tracing Oracle processes. It's a fascinating journey that every Oracle DBAs should take. Join Oracle ACE Director Craig Shallahamer as he explores how Oracle's redo processing actually works and how you can use this knowledge to maximize Oracle performance and increase your value as an Oracle DBA. What you are watching in the seminar Introduction. For details go to http://www.orapub.com/video-seminar-creative-redo-maneuvers What You Will Learn - How Oracle redo processing and flow works - The key memory structures and how to fit together - What is the log file sync wait event and why it is feared - How multiple Oracle 12c LGWRs work together - How to creatively use Oracle's "commit write" facility - Creatively using Oracle's ability to change OS process priorities Modules 1. Memory and process redo related architectures 2. Things Change... Always 3. Drilling Into Oracle 12c Multiple LGWRs 4. Breaking The Rules With The "Commit Write" Facility 5. Understanding When Commit Write Shines 6. Changing LGWR OS Priority. Yes! For more information on OraPub, go to www.orapub.com
Views: 517 OraPub, Inc.
Understanding Oracle Database Undo and Redo (1 of 2)
 
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Oracle's Undo and Redo architecture supports crash recovery and the database "ACID" test, i.e. transaction atomicity, consistency, isolation and durability. Understanding this architecture and how it works is essential knowledge for all DBA's. This tutorial requires a background in Oracle SQL and helpful is an understanding of Oracle system and dynamic views, e.g. v$bh. Presented by SkillBuilders' Oracle Certified Master DBA John Watson.
Views: 1061 SkillBuilders
Oracle Database Administration-  REDO LOG FILE MANAGEMENT PART II
 
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Oracle Database Administration- REDO LOG FILE MANAGEMENT PART II
Views: 27 SooCloudy
Oracle Redo Log Files.avi
 
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En este video se describe la función, estructura y configuración de los archivos Redo Log Online de la base de datos Oracle
Views: 738 CastilloMauricio
How To Configure Oracle Database  in ArchiveLog Mode
 
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How To Configure Oracle Database in ArchiveLog Mode / NoArchiveLog Mode
Views: 4339 Abbasi Asif
Redo Log - Oracle
 
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Redo Log Files en Oracle
can we take hot backup when the database is in noarchive log mode
 
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can we take hot backup when the database is in noarchive log mode? =================================================================== no archive log list; alter database begin backup; can we shutdown a database when it is in backup mode? ===================================================== alter database begin backup; shutdown immediate; ==no shutdown normal;==no shutdown transcational;==no shutdown abort;==yes database is in hot backup mode,db crashes now how to recover and open the database? =================================================================================== alter databse begin backup; shutdown abort; ORA-10873: file 1 needs to be either taken out of backup mode or media recovered ORA-01110: data file 1: 'E:\DATABASE\DATABASE\ORADATA\ORCL\SYSTEM01.DBF' solution: startup mount; alter database end backup; alter database open; how to check whether the database is in backup mode or not? =========================================================== select * from v$backup; how to take hot backup of database manually? ============================================ alter database begin backup; copy datafiles manually from original location to backup location alter database end backup; alter system switch logfile; alter system switch logfile; alter system switch logfile; copy archives from archive location to backup location. alter database backup controlfile to trace; (or) alter database backup controlfile to location; copy controlfile to backup location. How to check current_scn number of database? ============================================= select CURRENT_SCN from v$database; select dbms_flashback.get_system_change_number from dual; select timestamp_to_scn(sysdate) from dual; how to check datafile header scn number? ========================================= select name,CHECKPOINT_CHANGE# from v$datafile_header; when checkpoint will occur? ============================ alter system switch logfile; alter database begin backup; alter database end backup; alter system checkpoint;(manual checkpoint) shutdown immediate;(when the database is down) what will happen when checkpoint occurs? ========================================= scn of datafile header will update;
Views: 350 Praveen Biyyapu
Enable Archivelog Step by step by Le Anh
 
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Enable Archivelog Step by step by Le Anh with user Oracle step 01: shutdown database shut immediate; step 02: startup nomount; startup nomount; step 02: config prameter: mkdir -p /u01/archivelog alter system set log_archive_start=TRUE SCOPE=SPFILE; System altered. alter system set log_archive_dest_1='LOCATION=/u01/archivelog' scope=spfile; System altered. step 04: Now we mount the database instance: alter database mount; Database altered. Step 05: And finally, we set the database to archive log mode: alter database archivelog; Database altered. Step 06: open database; alter database open; step 07: check archivelog archive log list; switch log ALTER SYSTEM SWITCH LOGFILE; Thanks;
Views: 31 Anh Lê Ngọc
Oracle DBA, controlfiles, datafiles, online redolog files 1e6
 
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Three very important files in oracle database
Views: 3271 hammadshams
07 - Redolog file mgmt
 
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Views: 295 Khadeer Khan
How to Install Oracle! !! Database Training
 
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For Complete Database Training Details Visit: http://www.qaonlinetraining.com http://infotek-solutions.com/ Delivery Method: Instructor led classroom and Online Training supported by world class Learning management system which automate all flow of lectures, videos, assignments, forums, quizzes and interview process. Class Schedule: Week-ends and Weekdays Contact Us: 571-437-0652, Mail Us: [email protected] Training Locations at : Ashburn / Fairfax / Maryland Office Address: 12801 Worldgate Dr #500, Herndon, VA 20170 Overview of Oracle DBA Training Oracle as a flexible, complex & robust RDBMS The evolution of hardware and the relation to Oracle Different DBA job roles (VP of DBA, developer DBA, production DBA, database babysitter) The changing job role of the Oracle DBA Environment management (network, CPU, disk and RAM) Instance management (managing SGA regions) Oracle table and index management Instance Architecture Instance vs. database Components of an instance Creating the OFA file structure ($DBA, bdump, udump, pfile) Oracle Instance Internals SGA vs. PGA Background processes Interfaces with server and disk I/O subsystem Using SQL*Plus for DBA management Connecting and executing SQL Using the “as sysdba” syntax Overview of SQL*Plus DBA commands (startup, etc.) Control file, UNDO and REDO management Explaining the use of control files Listing the Contents of the control File File locations for control Files Obtaining Control File Information Listing control file contents Displaying and Creating Undo segments Altering Undo Segments Determining the Number and Size of Undo segments Understanding flashback technology Troubleshooting Undo – snapshot too old Redo log concepts for recovery Online redo log (log_buffer) online redo logs and archived redo logs Oracle ARCH and LGWR background processes Redo log dictionary queries Redo log switch frequency and performance Multiplexing the Online Redo Log Files Archiving the Oracle Redo Logs Recovery using the redo log files User and privilege management The three security methods (VPD, Grant security/role-based security, grant execute) Creating New Database Users Using pre-spawned Oracle connections Auditing User activity Identifying System and Object Privileges Granting and Revoking Privileges Creating and Modifying Roles Displaying user security Information from the Data Dictionary Overview of instance management Parameter files (init.ora, listener.ora, tnsnames.ora) Rules for sizing SGA components Automated Oracle memory management (AMM) Initialization file management Creating the init.ora file Using spfile Displaying init.ora values with v$parameter Oracle*Net configuration Creating the listener.ora file Creating the tnsnames.ora file Data buffer configuration & sizing Inside the Oracle data buffers Using the KEEP pool Monitoring buffer effectiveness Using multiple blocksizes (multiple buffer pools) Shared pool and PGA configuration & Sizing Shared pool concepts and components Understanding the library cache Relieving shared pool contention Overview of PGA for sorting and hash joins Using sort_area_size, hash_area_size and pga_aggregate_target Troubleshooting network connectivity Verifying network connectivity with ping and tnsping Testing database links Oracle tables, views and materialized views Types of Oracle tables (regular, IOT, sorted hash clusters, nested tables) Oracle Views Oracle materialized views Oracle indexes Types of Oracle indexes (b-tree, bitmap, bitmap join index) Creating B*-Tree, bitmap and function-based Indexes Function-based indexes Finding indexing opportunities Index maintenance Oracle constraints Costs & benefits of constraints Types of Oracle indexes constraints (check, not null, unique, PK, FK) Cascading constraints Schema, File & tablespace management Describing the relationship between data files, tablespaces and table Understanding Oracle segments Creating Tablespaces – using the autoextend option Changing the Size of Tablespaces – alter database datafile command Defining a TEMP tablespace Changing the default storage Settings for a tablespace Review of the storage parameters in DBA views (ASM, ASSM, pctfree, pctused and freelists). Monitoring Chained rows (fetch continued rows) Monitoring Insert and Update performance (pctused, APPEND) Database Maintenance Reason for reorgs – chained rows, imbalanced freelists Reorganizing Tables using Export and Import Using CTAS to reorganize data Index rebuilding Backup & Recovery overview (hot & cold Backups, RMAN, block change tracking) Oracle DBA Utilities Data pump (Imp and exp utilities) SQL*Loader LogMiner Flashback DataGuard Oracle DBA utilities – Oracle dbms packages (dbms_redefinition)
oracle tutorial step by step - how to change archivelog mode
 
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Hello friends in this video I'm going to demonstrate how to change ORACLE Database archive log mode step by step. If you something learn from this video so like my video and subscribe my channel for getting latest updates in your mail box.
Views: 505 OCP Technology
how to create redolog files and clean the redo log files
 
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for more vedios www.oraman.in
Views: 1034 oramandba
Part 4: Processing Log Files with Oracle Big Data and Hadoop   Oracle
 
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Learn about processing log files, part 4 of the big data demo from Oracle. For more information on Oracle's big data application and solutions, visit https://www.oracle.com/bigdata/
Views: 1423 Oracle Big Data
Oracle tutorial for beginners - Switch to Image copy for fast recovery with RMAN
 
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Hello guys I explaining with this video how to backup database as copy, how to use switch to copy image for fast recovery and how to recover corrupted datafile without close database. #Oracletutorialforbeginners #SwitchtoImagecopyforfastrecovery #RMANrecovery Oracle database Unbeatable,Unbreakable Platform..
Views: 2200 Oracle World
Catalog rman Parte 2
 
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Conectar no Catálogo do rman [[email protected] ~]$ rman target / catalog rcat/[email protected] Listar os scripts LIST ALL SCRIPT NAMES; Criando um script local: CREATE script COMANDO_SQL{sql 'alter system switch logfile'; } Criando um script global: CREATE global script BACKUP_DO_BANCO{ allocate channel c1 device type disk; allocate channel c2 device type disk; allocate channel c3 device type disk; sql 'alter system switch logfile'; sql 'alter system switch logfile'; sql 'alter system switch logfile'; sql 'alter system checkpoint'; backup as compressed backupset full database tag 'Full_Banco' format '/home/oracle/backup/Full_banco-%T-%I-%d-%s.bkp'; backup current controlfile tag 'CTF_FULL' format '/home/oracle/backup/CTF_FULL-%T-%I-%d-%s.bkp'; backup as compressed backupset spfile tag 'SPF_FULL' format '/home/oracle/backup/SPF_FULL-%T-%I-%d-%s.bkp'; backup as compressed backupset archivelog all delete all input tag 'ARCH_FULL' format '/home/oracle/backup/ARCH_FULL-%T-%I-%d-%s.bkp'; } Executando o script criado com a sintaxe run {execute script BACKUP_DO_BANCO;} Visualizar um script no Catalog Rman: print script BACKUP_DO_BANCO; Deletar script do Catálogo delete script BACKUP_DO_BANCO; delete script COMANDO_SQL; Executando os script do Catálogo rman target / catalog rcat/[email protected] script 'BACKUP_DO_BANCO' rman target / catalog rcat/[email protected] script 'BACKUP_DO_BANCO' msglog /home/oracle/backup/rman_bkp_diario-$dthora.log
Views: 273 Target Database
Oracle DBA, How to drop an online redolog member 1e5
 
03:32
How to drop and online redolog member which has invalid status
Views: 989 hammadshams

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