Oracle Hints Tutorial for improving performance APPEND PARALLEL JOIN INDEX NO_INDEX SELECT /*+ FIRST_ROWS(10) */ * FROM emp WHERE deptno = 10; SELECT /*+ ALL_ROWS */ * FROM emp WHERE deptno = 10; SELECT /*+ NO_INDEX(emp emp_dept_idx) */ * FROM emp, dept WHERE emp.deptno = dept.deptno; SELECT /*+ INDEX(e,emp_dept_idx) */ * FROM emp e WHERE e.deptno = 10; -- SELECT /*+ INDEX(scott.emp,emp_dept_idx) */ * FROM scott.emp; SELECT /*+ AND_EQUAL(e,emp_dept_idx) */ * FROM emp e; SELECT /*+ INDEX_JOIN(e,emp_dept_idx) */ * FROM emp e; SELECT /*+ PARALLEL_INDEX(e,emp_dept_idx , 8) */ * FROM emp e; SELECT /*+ LEADING (dept) */ * FROM emp, dept WHERE emp.deptno = dept.deptno; SELECT /*+ PARALLEL(8) CACHE (e) FULL (e) */ * FROM emp e ; SELECT /*+ PARALLEL FULL (e) */ * FROM emp e ; SELECT /*+ PARALLEL USE_MERGE (emp dept) */ * FROM emp, dept WHERE emp.deptno = dept.deptno; -- SORT Merge Join SELECT /*+ PARALLEL USE_HASH (emp dept) */ * FROM emp, dept WHERE emp.deptno = dept.deptno; -- Hash Join SELECT /*+ PARALLEL */ * FROM emp e ; INSERT /*+ APPEND */ INTO mytmp select /*+ CACHE (e) */ *from emp e; commit;
Views: 10294 TechLake
Making Smart Scan Work - Demo I'll go through a simple example of the kind of thing we need to think about when trying to achieve Smart Scan. Let me just enable tracing, run a simple query, select and * from *. Now, there's my query. The result set comes back, and how is it executed? An index full scan with the PK* index. The optimizer is intelligent enough to know that my query can be satisfied purely by reading the index and therefore it didn't have to go to the table at all. It looks very good. Well, it wasn't. Index full scans are an operation that cannot be offloaded. So, to execute that statement, every block of that index was delivered into the buffer cache of my own database instance, and the compute node then has to do the work of extracting those values. What can we do about it? One solution would be to hint the code. I select and demand an index fast full scan, and now we see the magic word "storage." An index fast full scan is offloadable, because an index fast full scan can do direct reads. An alternative approach? Well, you might not want to hint many, many thousands of lines of code. An alternative approach would be to do it through DDL. For example, take that index, make it invisible. Now run my statements without any hint at all, table access storage full, and that was offloaded. Having made the index invisible, Oracle has no option but a full-table scan, and a full-table scan is offloadable. Now, this means I have three options of this very simple example. I can let the optimizer get on with what it wants to do, and then I use an index that I'm doing block serving into the buffer cache. I can hint the code, index fast full scan. That's probably the best option for performance, but it's also the most work. In this intervening case, I make the index invisible so that it will still be used of course for enforcing the primary key constraints, but it will not be visible to the optimizer and therefore influence the optimizer towards using plans that can be offloaded the Smart Scan. Making the choice between this and influencing the optimizer in the correct direction is an extremely difficult job, and it is not always easy to determine what is going to be the best solution.
Views: 3706 SkillBuilders
In this tutorial, you'll learn...what are optimizer hints and how to use it.. SQL (pronounced "ess-que-el") stands for Structured Query Language. SQL is used to communicate with a database. According to ANSI (American National Standards Institute), it is the standard language for relational database management systems.
Views: 12109 radhikaravikumar
오라클 힌트를 이용한 쿼리문 튜닝강좌#11 : 인덱스를 멀티 블록 스캔하는 힌트(INDEX_FFS, Index Fast Full Scan) - 간단한 이론 및 예문을 통해 실습
Views: 202 이종철
When you create an index on multiple columns there's an important question you need to answer: In which order should you list the columns? This video looks at some of the factors you should consider to help answer this question. ============================ 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: 4624 The Magic of SQL
This session will help you understand following : 1. Table Scan vs Index Scan vs Index Seek 2. How these concepts affects the sql query performance. 3. Explain Actual Execution Plan 4. How to include actual execution plan in sql query 5. How to analyse sql query Thanks for watching! By sql Training Sessions By SQL Enjoy learning :)
Views: 319 Sql Training Sessions
Hints for Join Orders(USE_NL) - USE_NL 힌트는 테이블을 조인 하는 경우 중첩 루프 조인(Nested Loop Join)이 일어나도록 하는 힌트 문장이다. 중첩 루프 조인은 중첩반복 이라고도 하는데 하나의 테이블(outer/driving table)에서 추출된 ROW를 가지고 일일이 다른 테이블(inner/probed table)을 반복해서 조회하여 찾아지는 레코드를 최종 데이터로 간주하는 방법 이다. - EMP 테이블과 DEPT 테이블을 조인하는 경우 DEPT 테이블이 건수가 작다면 우선 이 테이블을 외부 루프로 해서 하나씩 읽으면서 이에 대응하는 EMP 테이블의 데이터를 추출 하는 경우가 중첩 루프 조인에 해당 한다. 이때 EMP 테이블의 경우 대부분 조인 칼럼에 인덱스를 이용하는 것이 성능상 좋다. 즉 중첩 루프 조인은 테이블 중 적어도 하나의 조인 컬럼에 대해 인덱스(or Hash Index)가 존재할 때 연관되는 방식으로 이 중첩 루프 조인에서 테이블 중 하나의 테이블 또는 중간 결과 셋을 대상으로 FULL SCAN이 일어나게 된다. 보통 USE_NL 힌트 구문은 ORDERED 힌트 구문과 같이 사용되는데 USE_NL이 취하는 인자는 FROM절에서 두 번째 나오는 테이블(비드라이빙 테이블, inner/probed table)을 명시해 주어야 한다. 인수로 사용되지 않은 첫 번째 테이블이 드라이빙 테이블(outer table)이 된다. Hints for Join Orders(ORDERED) 힌트는 FROM 뒤에 기술되는 테이블의 순서대로 조인이 일어나도록 해주는 구문이며 대부분 단독으로는 사용되지 않고 USE_NL(중첩 루프 조인을 유도), USE_MERGE(머지 소트 조인을 유도), USE_HASH(HASH 조인을 유도)등과 같이 사용된다. USE_NL/USE_MERGE/USE_HASH등의 인자로 사용되는 테이블은 FROM절에서 두 번째로 나타나는 테이블 이어야 하는데 FROM절에서 처음 나타나는 테이블이 드라이빙 테이블(OUTER/DRIVING TABLE)이 되고 나중에 나타나는 테이블이 PROBED TABLE(INNER TABLE)이 된다. 보통 드라이빙 테이블의 경우 데이터 건수가 적거나 조인 칼럼에 대해 인덱스가 없는 테이블이 주로 사용된다. 중첩 루프 조인(Nested Loop Join)이나 해시조인(Hash Join)의 경우 성능이 FROM절 뒤에 나타나는 테이블의 순서에 영향을 받지만 MERGE 조인은 영향을 받지 않는다. 머지 조인은 메모리에 올려서 정렬 시킨 후 병합하니까 실행 계획은 다르게 나올지 모르지만 성능에는 관계 없다.
Views: 397 이종철
Smart Scan is a wonderful capability, but you don't always get it. It's impossible for many execution plans, and this is a major restriction. If you think about what a Smart Scan actually does, it delivers individual columns, individual rows back to the instance. Now, a buffer cache can accept only blocks. Therefore, Smart Scan cannot possibly put those columns of rows into the buffer cache. It's simply not formatted appropriately. So, a Smart Scan has to return values directly into the session's PGA or, to put it another way, the only access method that can use Smart Scan is direct read. Well, what access methods can use direct read? There are only two, which are table full scan and index fast full scan. Any other access method, typically index range scan, table access by row ID, cannot use a Smart Scan. The second major issue, there are strict limitations of the type of objects that can be accessed through Smart Scan. It really is only heap tables. You can't use indexes. You can't use clusters. You can't use IOTs. Heap tables only. Perhaps hardest to track down and giving sometimes very erratic results is that Smart Scan can be interrupted by various conditions. You've met all the requirements for Smart Scan, directory and so on, got the right execution plan. The Smart Scan starts and then hits something that causes a problem. Issues that we know cause problems are, for instance, read consistency, also delayed block cleanout, change rows. Any of those issues and a few others mean that the storage tier will have to interrupt its Smart Scan, deliver complete blocks into that buffer cache, let your session then do what is necessary to the block, and only then can the Smart Scan proceed. Now, in order to maximize the use of Smart Scan, there may be quite a lot of work. Very often, you'll have to adjust your index structures. Making them invisible is a nice technique there. There are many, many, many parameters that can influence the likelihood of achieving a Smart Scan, and almost inevitably you're going to be rewriting a lot of hint SQL and putting hints in it to get the correct execution plans that can enable a Smart Scan to occur. This is all because of one fundamental problem; the optimizer is not in any way aware of the Exadata. The optimizer develops an execution plan in exactly the way it would without the Exadata storage. The use of Smart Scan, the awareness of Exadata comes at the next level down. The optimizer develops the plan through a normal pass and then passes it through to the SQL execution engine, and it's the SQL execution engine that determines, on a case-by-case basis, whether to use the Smart Scan. This means that you might develop a plan and execute the statement 50 times. Forty-nine times, you get a Smart Scan. The 50th time, for whatever reason, the SQL execution engine decides not to. This can result in somewhat erratic performance.
Views: 1716 SkillBuilders
CMA engaged with Excelero to to run an Oracle Real Application Cluster benchmark on the CMA Microterabyte architecture and Excelero’s NVMesh software defined storage. The results were nothing less than impressive! The results were 3 times faster than the previous highest performing storage node CMA had ever tested and up to 10 times faster than most traditional storage nodes. This is a recording of the webinar we hosted about the results.
Views: 40 Excelero NVMesh
“Why isn’t my query using an index?” is a common question people have when tuning SQL. This session explores the factors that influence the optimizer’s decision to answer this question. It does so by comparing fetching rows from a database table to finding all the red M&Ms a packet, and contrasts using an index range scan and a full table scan. It also introduces the concepts of blocks and the clustering factor. The session offers a discussion of how these affect the optimizer's calculations, and includes a demo of how these concepts work in practice using real SQL queries. This session is intended for developers who want to learn the basics of how the optimizer chooses between an index range or full table scan. Speaker: Chris Saxon
Views: 315 Oracle Developers
In this tutorial, OCM John Watson will - via demonstrations - debunk these myths: Myth #1: Oracle Database does not index NULL Myth #2: A search that includes wildcards can't use an index if the wildcard precedes the string. Myth #3: Oracle will not use a function-based index unless the FBI is coded in the predicate. Myth #4: Indexes always help. The more indexes the better. See http://skillbuilders.com/free-oracle-tutorials for gigabytes of free Oracle video tutorials.
Views: 16461 SkillBuilders
Best explanation how to remove correlated sub query.Please watch complete video for more detail.
Views: 1193 SqlIsEasy
See all 5 tutorials, free, at SkillBuilders.com/OracleTuningFullTableScans Number Eight in the "Performance tuning Guide, Top Ten Mistakes Found in Oracle Systems" Long Full Table Scans is described as follows: "Long full table scans for high-volume or interactive online operations could indicate poor transaction design, missing indexes, or poor SQL optimization. Long table scans, by nature, are I/O intensive and unscalable." Actually, there are many cases where the full table scan is your friend. But whether they are good or bad for the performance of the SQL that invokes them, there may be implications (for better or for worse) for performance of other statements. This is particularly true in 11.2.x, where direct reads are possible for serial scans, and indirect reads are possible for parallel scans. Do you trust the optimizer? The change in behaviour in recent releases may need some investigation, and revisiting older code. As always with a SkillBuilders Tutorial, we shall illustrate the issues and solutions with live demonstrations using release 11g (18.104.22.168). Audience: Operating System Administrators, Storage Administrators, Oracle Administrators and Management responsible for Storage and / or Oracle Databases.
Views: 4609 SkillBuilders
blog: connor-mcdonald.com Highlights from the April DBA Office Hours session. Office Hours is 100% free Q&A sessions held every month by Oracle experts to help you succeed with the Oracle suite of technologies. Music: Smells Like Summer - Del (Vlog Music No Copyrighted) Video Link: https://youtu.be/IrkMsqcOjGU
Views: 1456 Connor McDonald
In this video, you will learn why you should not blindly follow the SSMS Missing Index Hints. Learn about Amit Bansal’s ultimate video course on SQL Server Performance Tuning: http://bit.ly/abvideocourse Stay Connected with Amit Bansal and subscribe to the exclusive list of his session attendees (conference and pre-cons), class participants & video viewers. You will get just one email in two weeks with good links to continue your learning. http://bit.ly/connectwithab Also, you can join ‘SQLMaestros Champs’ Telegram group and participate in SQL Server discussions. It’s a forum for SQL Server lovers - https://t.me/joinchat/AnAGwxBU1KXORoUR9jD_dw If you work on other technologies in MS Data + AI Stack, join this group: http://www.dataplatformgeeks.com/dpg-mobile/ Video resources including presentation, demo files, code snippets and more learning material is available on http://www.dataplatformgeeks.com/ (Join for free and access all the resources) Connect With The Speaker (Amit Bansal) -Follow on Twitter: https://twitter.com/A_Bansal -Follow on FaceBook at http://www.facebook.com/amit.r.bansal -Follow on LinkedIN: http://www.linkedin.com/in/amitbansal2010 -Facebook Page: https://www.facebook.com/AmitRSBansal/ Connect with SQLMaestros: http://sqlmaestros.com/ - http://www.twitter.com/SQLMaestros - https://www.facebook.com/SQLMaestros - Email us: [email protected] Data Platform Summit Asia's largest learning event on AI, Data & Advanced Analytics. https://www.dps10.com/ SQLMaestros Video Courses Amit Bansal’s popular SQL Performance Tuning course is now going live in video format. http://sqlmaestros.com/sql-server-videos-courses/ SQLMaestros Hands-On-Labs Want to practice SQL, Azure & BI concepts, step-by-step with exercises, screenshots, instructions & explanations? Get access to 100+ labs covering the entire Microsoft Data Platform stack. Try SQLMaestros Hands-On-Labs – the new way of practical, self-paced learning. Anytime. Anywhere. http://hols.SQLMaestros.com Email [email protected] SQLMaestros Learning Kits The kit comprises of PowerPoint presentations, lab manuals, workbook & instructor demos & notes. The kit is based on Amit Bansal’s Performance Tuning Master Class. https://sqlmaestros.com/sql-server-courseware/ SQL Server Health Check If your SQL Server deployments are not performing good or if you have seen early signs of performance degradation, SQLMaestros can help you with a thorough health check. https://sqlmaestros.com/sql-server-health-check/ Have technical questions? Join the largest SQL group on FB www.facebook.com/groups/theSQLGeeks Our LinkedIn group https://www.linkedin.com/groups/6753546 Our Telegram group on mobile http://www.dataplatformgeeks.com/dpg-mobile/ DataPlatformGeeks (DPG) Community Join the fastest growing community of data & analytics professionals Why Join DPG? http://www.dataplatformgeeks.com/ -Attend all events hosted by DPG, including SQLMaestros Special Events -Get access to free videos, labs, magazines and host of learning resources -Download all events & conference material -Learn new skills. Sharpen existing skills -Be part of Asia’s Largest Data/Analytics Community -Opportunity to be a regional mentor & speaker at our events -Immense technical & professional development If you wish to speak at DataPlatformGeeks events, fill out this form: http://www.dataplatformgeeks.com/call-speakers-dpg-events/ If you wish to become a Regional Mentor with DataPlatformGeeks, fill out this form: http://www.dataplatformgeeks.com/become-regional-mentor/ Watch all recorded DPG webinars here: www.youtube.com/SQLServerGeeks
Views: 1535 SQLMaestros
Part -1 : Introduction to Indexes, B*Tree Indexes, Index scan methods. Part -2 : B*Tree Index Types(different types of B*Tree indexes) Part -3: Using B*Tree Indexes(When use B*Tree indexes, factors related to B*Tree Access) Part -4 : Index Organized Table Part -5 : Bitmap Indexes Part -6: Partitioned Indexes Part- 7: Other type of Indexes based on characteristics & use. Part -8: Managing Indexes
Views: 50001 Anindya Das
Storing dates as numbers can cause unexpected problems. In this video Chris looks at one possible issue: inconsistent query performance. He then shows methods you can use to improve performance, including function-based indexes and histograms. ============================ 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: 7694 The Magic of SQL
Learn SQL Tuning! Tune full table scans! Part 1 of 5 videos in this series. See all 5 tutorials, free, at http://www.skillbuilders.com/tuning-long-full-table-scans Number Eight in the "Performance tuning Guide, Top Ten Mistakes Found in Oracle Systems" Long Full Table Scans is described as follows: "Long full table scans for high-volume or interactive online operations could indicate poor transaction design, missing indexes, or poor SQL optimization. Long table scans, by nature, are I/O intensive and unscalable." Actually, there are many cases where the full table scan is your friend. But whether they are good or bad for the performance of the SQL that invokes them, there may be implications (for better or for worse) for performance of other statements. This is particularly true in 11.2.x, where direct reads are possible for serial scans, and indirect reads are possible for parallel scans. Do you trust the optimizer? The change in behaviour in recent releases may need some investigation, and revisiting older code. As always with a SkillBuilders Tutorial, we shall illustrate the issues and solutions with live demonstrations using release 11g (22.214.171.124). Audience: Operating System Administrators, Storage Administrators, Oracle Administrators and Management responsible for Storage and / or Oracle Databases.
Views: 2992 SkillBuilders
Explain plan is a wonderful utility in Oracle PL SQL. It helps you to understand how much cost a query takes to perform based on indexed table or table without index. In this oracle tutorial a full description is given on a table containing huge number of rows first based on index on a column and then without index.
Views: 3842 Subhroneel Ganguly
Held on April 20 2018 Andy Rivenes (@TheInMemoryGuy) and Maria Colgan (@SQLMaria) focused on a deep dive into hash joins and how they are used with Database In-Memory to make joins lightning fast. The session began by reviewing how traditional hash joins work and then addressed Bloom filters and how Database In-Memory uses them to effectively turn hash joins into scan and filter operations. The use of Join Groups was then discussed as a way to further enhance join performance in 12.2 and beyond. AskTOM Office Hours offers free, monthly training and tips on how to make the most of Oracle Database, from Oracle product managers, developers and evangelists. https://asktom.oracle.com/ Oracle Developers portal: https://developer.oracle.com/ Sign up for an Oracle Cloud trial: https://cloud.oracle.com/en_US/tryit music: bensound.com
Views: 593 Oracle Developers
오라클 힌트 강좌#8 인덱스 영역에서 데이터를 스캐닝 하기 위한 힌트 (INDEX, INDEX_ASC, INDEX_DESC힌트) Hints For Access Paths(INDEX_ASC) INDEX 힌트와 동일한데 인덱스가 생성된 형태대로 인덱스를 스캔 하라는 의미의 힌트이다. 이 힌트를 이용하여 데이터를 추출하게 되면 화면에 나타나는 데이터는 인덱스를 생성한 순서대로 데이터가 추출된다. 인덱스 영역에서 인덱스가 생성된 형태 대로 순방향 스캐닝 하므로 INDEX 힌트와 동일하다. [형식] /*+ INDEX_ASC(테이블명 [인덱스명 [인덱스명] … ]) */ Hints For Access Paths(INDEX_DESC) INDEX, INDEX_ASC 힌트의 반대로 인덱스 영역에서 생성된 인덱스의 역순으로 스캐닝 하라는 의미로 데이터 값을 역순 정렬하라는 의미는 아니다. 인덱스가 생성될 때 내림차순으로 생성 되었다면 이 힌트를 사용한다면 데이터 값은 오름차순으로 나타나게 된다. [형식] /*+ INDEX_DESC(테이블명 [인덱스명 [인덱스명] … ]) */
Views: 305 이종철
7 CRAZY HACKS for the Galaxy S9/S9 plus/S8 Subscribe to my channel: http://bit.ly/subscribe-mobiscrub Tip 1: You can connect your Galaxy S9 and S9 plus to a LAN connection through a simple adapter and enjoy much faster internet speeds. We all know that LAN is faster than Wi-Fi because of more bandwidth and no interference. Buy Type C to Ethernet adapter on Amazon.in: https://www.amazon.in/AmazonBasics-USB-Type-C-Ethernet-Adapter/dp/B01M6WQ0T0/ref=sr_1_4?ie=UTF8&qid=1531754941&sr=8-4&keywords=type+c+ethernet+adapter on Amazon.com: https://www.amazon.com/Ethernet-Adapter-uni-Thunderbolt-Pixelbook/dp/B077KXY71Q/ref=sr_1_3?ie=UTF8&qid=1531754970&sr=8-3&keywords=type+c+to+ethernet+adapter Tip 2: You can visually customize how your notifications appear on the lock-screen. So whether you want a complete white background under the notification, or translucent white or completely transparent - that’s completely up to you. Tip 3: I’ve always wondered if I could manually control the brightness of the always on display. Turns out I can! So if i’m looking at the always on display, I can increase or decrease the brightness. If you go into always on display settings, you can turn off auto brightness and then manually set the brightness of the always on display. Tip 4: Set up a video lock-screen. I’m not sure why people aren’t doing it when it’s easily a very attractive and exclusive feature. It looks so good and definitely turns heads around. Tip 5 Set your screen lock to a combination of PIN, Intelligent scan and fingerprint - so you are always covered. By the way, intelligent scan is nothing but a combination of face and iris making it super secure. Now, if your hands are dirty then intelligent scan can do the job. If your phone is on the table, then the PIN would be most handy because you won’t have to pick it up for either intelligent scan or fingerprint. And if it’s too dark, then either PIN or the fingerprint can do the unlocking. So it’s just a great way to cover all scenarios! Tip 6: Auto restart device to keep it always optimized for best performance Tip 7: Full screen apps for best app experience The royalty-free music used in this video is 'Back To The Stars' by Nazar Rybak. (www.melodyloops.com), licensed under Creative Commons "Attribution 3.0". I have given credit for the use of this music at the end in the video description. Here is a link to the terms of the license: http://www.melodyloops.com/support/full-license/ http://creativecommons.org/licenses/by/3.0/legalcode
Views: 161602 mobiscrub
Presented by Steven Feuerstein, Oracle Corporation The function result cache, added in Oracle Database 11g, offers developers a way to dramatically reduce the amount of time it takes to retrieve data requested repeatedly by database sessions (specifically, when the same rows of a table are fetched much more frequently than they are changed). This cache is stored in the SGA, shared across all sessions in the instance, and automatically purged of "dirty data" by the Oracle Database. Every application running on 11.1 or higher should be taking advantage of this feature. Best of all, there is minimal impact on your code to start using this feature.
Views: 1098 ODTUG
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 demonstrates how set based parallel processing 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.
Views: 5052 Oracle Learning Library
The sixth part of a mini-series of videos showing how you can improve the performance of function calls from SQL. In this episode, we look at using function-based indexes to improve the performance of queries that use function calls in the WHERE clause. For more information see: https://oracle-base.com/articles/8i/function-based-indexes https://oracle-base.com/articles/misc/efficient-function-calls-from-sql#functions-in-the-where-clause Website: https://oracle-base.com Blog: https://oracle-base.com/blog Twitter: https://twitter.com/oraclebase Cameo by Ronald Bradford : Blog: http://ronaldbradford.com/blog/ Twitter: https://twitter.com/RonaldBradford Cameo appearances are for fun, not an endorsement of the content of this video.
Views: 1523 ORACLE-BASE.com
http://www.ibmbigdatahub.com/ The sixth conversation between IBM software lab specialists about the value of BigInsights, IBM's Hadoop offering—this time with a comparison to Oracle—another vendor in the Big Data marketplace.
Views: 1390 IBM Analytics
Authority Indexer Demo - Does it really work??? Advanced Indexing Software available Now! Get It Here - http://masspage.pro/authority-indexer-jv Not only is Authority Indexer extremely simple to use, it's also extremely reliable. Enter your links, set it running and it will index 100% of your links almost instantly! It's a truly "set it and forget it" bit of software that will free up your time and help you get those money sites ranking quickly! Find out why I use this indexer for indexing - - Web Pages - Backlinks - Videos - PBNs - Web 2.0's - And much more! Other indexing software & services on the market include - - Bad Ass Indexer - Crazy Indexer - Instant Link Indexer - One Hour Indexing - Backlinks Indexer - Link Processor Watch my review video to find out why I think Authority Stacks wins hands down! Check it out here - https://www.youtube.com/watch?v=wlxLZLj20RA With top end support from Jason & Neven, the creators of the Amazing Authority Indexer software, you can be confident in the fact that you'll be getting bleeding edge software with amazing support not only from the developers but you'll also have access to the Authority Indexer community too. Check it out Here - http://masspage.pro/authority-indexer-jv See other tutorials and reviews on my channel - https://www.youtube.com/channel/UCyrHq1usyTr7nFP_fBHJC1Q Keep an eye on our Authority Indexer Playlist for more hints and tips that we'll be adding soon! - https://www.youtube.com/playlist?list=PLedltPoERzCoJOaKUTJPiasrK3EFnO5kx
Views: 800 Mass Page Pro
We're heading into OpenWorld season with this month's DBA Office Hours. We preview OpenWorld and how to get the best out of it, as well as covering - issues with the MERGE command - flashback database - unusual blocking locks - when EXPLAIN PLAN drops table from view blog: https://connor-mcdonald.com twitter: https://twitter.com/connor_mc_d https://developer.oracle.com/ https://cloud.oracle.com/en_US/tryit
Views: 147 Oracle Developers
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Views: 570 CRYPTO INCOME PRO
**** SysInfoTools DATABASE RECOVERY (REPAIR CORRUPTION) **** 👉https://order.shareit.com/product?vendorid=200149662&productid=300612508&languageid=1&affiliateid=200282640 **** SysInfoTools DATABASE RECOVERY TOOLKIT (REPAIR CORRUPTION + PASSWORD RECOVERY) **** 👉https://order.shareit.com/product?vendorid=200149662&productid=300725598&languageid=1&affiliateid=200282640 **** SysInfoTools SQL SERVER PASSWORD RECOVERY **** 👉https://order.shareit.com/product?vendorid=200149662&productid=300606987&languageid=1&affiliateid=200282640 SQL Server Index Tuning is one of the main aspects of being a DBA (or at least a Good one 😉). In this Video, I cover my Top Process for Identifying SQL Server Missing Indexes, as well as the Steps that I take when Determining which Missing Indexes should be Created. **** Blog Post Link with Step-By-Step Instructions Below **** ========================================== https://joshburnstech.com/2019/03/faster-queries-find-sql-server-missing-indexes/ ========================================== **** Important Link to Click! **** https://www.youtube.com/channel/UCQZ9jWTa3xpyUAPgNnAHRpw/example?sub_confirmation=1 **** UpWork Profile - TOP RATED SQL DBA & DEV **** ================================== https://www.upwork.com/fl/joshuaburns ================================== **** What I'm Reading **** =========================================== Automate the Boring Stuff with Python: Practical Programming for Total Beginners https://amzn.to/2HG6EJZ =========================================== **** Section Times in Video **** ========================================= #1: Open the SQL Server Missing Indexes Blog Post 0:55 #2: First Process: Brent Ozar's sp_BlitzIndex SP 2:19 #3: Second Process: Customized Missing Index Script 6:17 #4: Determine which Indexes Should be Created 12:26 #5: Monitor Usage 14:57 #6: Leave Comments! 16:36 #7: Question of the Day! (I will reply) 17:11 ========================================= My 4K YouTube Setup Gear (How the video was recorded): ========================================== https://kit.com/JoshBurnsTech/youtube-setup-gear ========================================== **** EDITED BY: ALEX ZINGARO **** 👻 http://www.alexzingaro.com/ LET'S CONNECT! 📷 Instagram ➔ https://www.instagram.com/joshburnstech/ 📱 Facebook ➔ https://www.facebook.com/JoshBurnsTech/ 🐦 Twitter ➔ https://twitter.com/JoshBurnsTech 🙋🏼♂️ Website ➔ https://JoshBurnsTech.com DISCLAIMER: This video and description contains affiliate links, which means that if you click on one of the product links, I’ll receive a small commission. #sqlserver #sqlindexes #indexes #fasterqueries #sqlindexes
Views: 304 Josh Burns Tech
오라클 힌트를 이용한 SQL튜닝 동영상 강좌#14 - 인덱스 힌트(INDEX)와 복합 인덱스 - 인덱스 힌트에 칼럼을 기술하여 원하는 - 인덱스를 취사 선택하는 방법 - 간단한 예문을 통한 실습
Views: 230 이종철
CVISION Technologies, Inc. has carried out trusted integrations into Captiva® since 2004. Our PDF Optimization Suite integrates seamlessly into OpenText Captiva with advanced OCR, file compression, and PDF conversion capabilities to create highly efficient captured documents. The suite automatically identifies and bypasses the OCR phase for existing text layers in digital documents, greatly increasing document conversion speed and accuracy. The suite is a full-featured solution that provides optimized optical character recognition handling for digitally born documents. The PDF Optimization Suite will convert MS Office documents, HTML, email attachments, and zip files to PDF in addition to most common image file formats such as TIFF, JPG, BMP, and more. With more efficient processing of image documents and digital files, enterprises can use the PDF Optimization Suite for OpenText Captiva to streamline their document processing into a single, optimized workflow. Compressing black and white image files by a factor of 5x-10x and color image files by a factor as high as 100x, CVISION offers lossless compression to ensure processed files remain compliant with records retention rules. Optimizing documents leads to faster, easier access, storage, and transmission of vital information between an organization’s employees, clients and users. With these features, the suite allows Captiva users to create an organized repository with standardized, highly optimized PDF files. Call (347) 292-2714 to schedule your demonstration of the PDF Optimization Suite for OpenText Captiva today. Subscribe to learn more about PDF optimization, file compression, OCR, and PDF conversion technologies! https://www.youtube.com/user/CVISIONT... Join our community! Website: http://www.cvisiontech.com/?utm_source=youtube.com&utm_medium=video&utm_campaign=pdf_optimization_suite Twitter: @CVISIONTech Linkedin: https://www.linkedin.com/company/cvis... Newsletter: http://bit.ly/2cpQT9l
Views: 442 CVISIONTech
In this video Chris uses performance black magic to make a query that should take three seconds execute instantly. Watch the video to find out how you can use the same technique to reduce the execution time of your queries. ============================ 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: 1570 The Magic of SQL
Find it EZ is fast and simple to configure. This demo will demonstrate how to quickly add Projects using the Project Manager, edit a Project’s Settings, switch between Projects, choose which sources to scan, and change the User Options. Projects contain the settings used for a search. Using Projects gives you the ability to quickly search different directories, languages, databases, and reports. You may add a new Project either by using the Search Assistant, or by using Manage Projects. Click Projects, click Manage Projects, then click Add. In the resulting text box, enter a name for the new Project, and click OK. To edit your new Project’s settings, click Edit. In the Folder and File Settings tab, you may add as many directories as you wish to search by clicking Add under the Search Path(s) field. You may add directories by either using the folder browser, or by typing in the directory path. You may also choose whether or not to recursively search all sub-directories, and whether to explicitly include or exclude the directory contents in each search. To add any filters for files you wish to exclude, click Add under the Exclude File(s) field. Fully qualified filenames or wildcard patterns may be used. Click on any of the listed Programming Languages to modify the file extensions to be included in a syntax aware search. You may also set your preferred application to instantly edit or view results in full context. To add a custom file extension to a programming language’s settings, click Add under the File Extensions Searched field. Enter the file extension to be searched, and click OK. To change the editor or IDE which opens this type of language file, click one of Find it EZ Code Viewer, Windows default editor, or Selected Application. To search an Access database, click on Access under Databases. Note the alert prompting for required information. You may disable this hint by checking "Do not show this message again". Enter the path and file name of the Microsoft Access database file, and its password, if one exists. Click Test Connection to verify that the provided information is correct. You can select what database information you wish to search by checking options in the Search section. You may also select your preferred editor for opening search results. To add any other of type of database, such as SQL Server, click on the database type under Databases. Add the Service or Instance, Port Number if it is non-standard, the username and password of a user with read access, and the name of the Database to search. If known, you may enter the database name directly, or select it from a list by opening the database browser. Click Test Connection to verify that the credentials you have provided are correct. Select what type of database information you wish to search and note that for all databases, you can also improve search times and reduce false positives by choosing subsets of objects to search. For example, to limit which tables to search for data, click the Data tab, click Refresh, and select which of the Available Tables you wish to search, or alternatively, type the name of the table you wish to add in the Filter text-box, adding an asterisk for any wildcard pattern matches. The Active Project is the project whose settings are currently being used to complete searches. Setting which Project is active is simple. Within Manage Projects, highlight the project you wish to make active by clicking it, and click Set Active. Alternatively, click Projects, and select the Project you wish to make active from the list. Before you search, you must choose which sources to scan. Under Scan Sources, select all the sources you wish to scan at this point. These can be easily changed before or between each search. To edit your User Options, click Tools, then click User Options. Here you can change how the application behaves. The On Startup section controls actions on Startup. Under Performance, you can choose whether or not to enable multi-threaded searching, and define how many searches to do simultaneously. The Results section allows you to automatically expand the details of each search result. You may chose to turn various Tips and Hints off once you are familiar with using Find it EZ. Use scan options to further customize each search with syntax aware filters, wildcards or regular expressions. The maximum number of source items scanned simultaneously is based on user option settings demonstrated earlier. For more information about Find it EZ, visit https://www.finditez.com. To download your free trial, go to https://www.finditez.com/members/#downloads. Start building better code today!
Views: 616 Find it EZ Software
Views: 667 Penetration Testing