This is the 2nd video from " Partitioning in Oracle " series, It explains how oracle stores and manages data. What is single Block IO and Multi Block IO ? Why full table scan is better than index access in few cases. The video is very elaborate, I have tried my level best to keep it as simple as possible
Views: 11266 Tech Coach
"Why isn't Oracle using my index?!" is a common question people have when tuning SQL queries. In this episode Chris compares two methods for finding all the red candies from party bags he's prepared. He shows how these are like a full table scan and an index range scan. He goes on to compare the performance of these two approaches. He shows when a full table scan becomes more efficient than an index range scan and vice versa. ============================ The Magic of SQL with Chris Saxon Copyright © 2015 Oracle and/or its affiliates. Oracle is a registered trademark of Oracle and/or its affiliates. All rights reserved. Other names may be registered trademarks of their respective owners. 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 or merchantability, fitness for a particular purpose, and non-infringement.
Views: 8415 The Magic of SQL
Tuning Oracle systems using data from an AWR or Statspack report is powerful. However, there are some challenges that make this typicallly straightforward analysis very problematic. In this webinar I will discuss some of these challenges including how to properly deal with them. The specific challenges are when to use on demand or non-standard snapshot durations, when DB CPU is suspect, when the top event is db file sequential reads but there is NOT an IO bottleneck, why multi-block and async read wait times are typically much longer than single block reads, when backups are run during key batch processes and finally how using ASH data we can help get around some of these problems. You will see all of these challenges come into play while I do an Oracle Time-Based Analysis (OTBA) from a single real-life production Statspack report. For more information on how you can watch the full webinar or for more great OraPub webinars, go to www.orapub.com
Views: 16 OraPub, Inc.
Learn How Oracle RAC Cache Fusion Works Really Works. Download Free Scripts at http://skillbuilders.com/How-Oracle-RAC-Cache-Fusion-Works. A continuation of the cache fusion demonstration, with a detailed look at session statistics and the raw trace file contents. You will learn about the "gc" wait events (Global Cache) including 'gc current block 2-way' and 'gc cr multi block request'.
Views: 3161 SkillBuilders
Display table's data in tabular form in oracle form builder Oracle form developer tutorials Oracle form 6i builder tutorials
Views: 3752 Oracle Developer Tutz
Ever wanted to learn about Feed The Beast but didn't want to spend hours reading the wiki? Gar1onriva is here to help. In this series, I will be tackling individual mods from the many Feed The Beast modpacks, starting with the basics and going all the way up to some of the most complicated. Modpacks: FTB Beta Pack A FTB Retro SSP FTB Lite Direwolf20 MindCrack Tech World Feed The Beast: http://feed-the-beast.com/ FTB Wiki: http://feed-the-beast.wikia.com/wiki/Feed_The_Beast_Wiki GG&G Website: http://Gar1onrivaGaming.co.uk Facebook: http://facebook.com/Gar1onrivaGaming Reddit: http://www.reddit.com/r/Gar1onrivaGaming The music in this video is by SilkWebb and used with his permission. I highly recommend listening to his stuff. 'Piano Requiem #1': http://www.youtube.com/watch?v=geJ992VJATo&feature=plcp 'Crystal': http://www.youtube.com/watch?v=7SaC-2uZPOw
Views: 937 Gar1onriva Tutorials
Dieses Video ist das erste von ? die euch zeigen werden, wie man eine Gui in einen Minecraft forge mod implementiert. Das mag zwar auf den ersten Blick etwas schwierig erscheinen, wenn man aber einmal dahinter gekommen ist, wird das ganze auch ganz einfach :) #Nächstes Video: - kommt noch - #Minecraft: http://www.minecraft.net #Forge: http://www.files.minecraftforge.com #Eclipse: http://www.eclipse.org #Java: http://www.oracle.com/technetwork/java/javase/downloads/jre7-downloads-1880261.html
Views: 314 LateinCecker
Feel free to contact Call : +91-8870903864 Or E-mail [email protected] ORACLE PERFORMANCE TUNING 1 – 1: Introduction to Oracle tuning - The top-down approach to tuning - The history of Oracle tuning - A review of the Oracle architecture - The goals of Oracle tuning - Overview of SQL tuning - Oracle network bottlenecks 1 – 2: Oracle disk I/O tuning - History of DASD - Understanding disk I/O - Monitoring disk I/O (AWR, dba_hist_filestatxs) - Sorted hash cluster tables - Disk I/O waits - Oracle data buffer internals (db_cache_size) - Caching data blocks in the PGA (parallel full-table scans) - Blocksize and I/O performance 1 – 3: Oracle CPU Tuning - Finding your cpu_count - Measuring CPU usage with vmstat - _optimizer_cost_model=cpu - Parallel query and CPU 1 – 4: Oracle RAM tuning - all_rows and first_rows optimization and RAM - Multiple data buffers - Multiple blocksizes - Measuring RAM paging - Oracle SGA RAM - Oracle PGA RAM - Using the KEEP pool - Automatic Memory Management (AMM) 1 – 5: Oracle Instance Tuning - Global tuning techniques - Display possible unnecessary large-table full-table scans - Library cache tuning 1 – 6: Oracle SQL Tuning Introduction - SQL tuning hierarchy - SQL tuning goals - optimizer modes - query re-write - cursor_sharing - viewing execution plans (autotrace) - verifying optimal join techniques - parallelizing SQL execution - dynamic statistics - Exercise – count times when a table is invoked - 12c new SQL features - function-based virtual column - adaptive execution plans - 12c new optimizer metadata collection features 2 – 1: AWR and ASH - AWR vs STATSPACK - Reading an AWR report - AWR report analyzer - Basics of predictive modeling for performance - Finding repeating signatures of data 2 - 2: Oracle RAC Tuning - RAC architecture tuning - Tuning disk I/O on RAC - Tuning the cache fusion layer on RAC 2 – 3: Oracle Tuning Pack - creating SQL Profiles - Recommending new indexes - “automatic” SQL Tuning - SQL Performance Advisor (SPA) - recommending object reorganization 2 – 5: Oracle Diagnostic pack - AWR and ASH - real time SQL monitoring - comparing performance periods - Oracle monitoring & alert notifications (setting thresholds) 2 – 6: Oracle Tracing - 10046 tracing - TKPROF tracing - Trace analyzer - Autotrace 3 –2: Optimizing Oracle SQL - Parsing a SQL statement - Semantic parsing 3 –3: Optimizer statistics - Types of metadata - System stats 3 – 4: Exposing & Reading Execution Plans - autotrace - SQL*Trace - Determine the steps of an execution plan 3 – 5: altering execution plans - Changing CBO statistics - Using hints - Using the opt_param hint 3 – 6: Oracle indexing - Overview of Oracle indexing - function-based indexes (FBI) - index usage monitoring - fishing in the library cache - optimizing indexes - Identifying EOW, EOM and EOY SQL. - Creating on-demand indexing - oracle text indexes DAY 4 Advanced Topics in Tuning 4 – 1: Boolean/Built-in functions - Boolean evaluation - Decode and case - Basics of B PGA to avoid disk sortsIFs - Function-based indexing - Creating a custom BIF using PL/SQL - The effect of BIFs on SQL execution 4 – 2: tuning Oracle sorting - Basics of sorting - RAM usage in a hash join - Use autotrace to see sorts 4 – 3: Tuning Oracle subqueries - Scalar subqueries - In-Line views - Correlated vs non-correlated subqueries - The merge_aj hint - The anti-join hints 4 – 4 Tuning with temp objects (materialized views, global temporary tables) - Tuning with temporary tables 4- 5: Tuning full-table scans - Basics of file multiblock I/O - Deciding when to invoke full-table scan - RAM caching in the SGA - Tracking full-scans over time with AWR 4- 6 tuning parallel query - Parallel query Oracle Performance Tuning training online, Oracle Performance Tuning training material, IBM Websphere Application Server training cost, Oracle Performance Tunning training pdf, Websphere Application Server training in USA uae India, Oracle Performance Tuning training, online Corporate training malaysia Singapore, Oracle Performance Tuning software, Oracle Performance Tuning training in bangalore, Oracle Performance Tuning training institutes in hyderabad, Oracle Performance Tuning training in chennai, Oracle Performance Tuning training in hyderabad, Delhi, Mumbai, Pune, Oracle Performance Tunning, Oracle Performance Tuning training webinar, online training singapore, Oracle Performance Tuning eam, Oracle Performance Tuning as a service,Oracle Performance Tuning online Training Oracle Performance Tuning online Training Oracle Performance Tuning online Training Oracle Performance Tunning online Training maximo scheduler, Oracle Performance Tunning (consumer product) Oracle Performance Tunning online Training Oracle Performance Tuning online Training Oracle Performance Tuning online Training Oracle Performance Tuning online Training Oracle Performance Tuning online Training , Post Training Support
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