Search results “Create index parallel oracle”
Oracle Hints Tutorial for improving performance
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: 4339 TechLake
The video explains BITMAP and BITMAP JOIN INDEX IN ORACLE and when you should create them on a column. BITMAP INDEXES should be dealt with carefully as they can lead to serious performance issues if the table is updated by multiple processes in parallel. Indexing Basics :https://www.youtube.com/watch?v=0X9bbtwTnuE&t=1095s Star and snowflake Schema :https://www.youtube.com/watch?v=Qq4yhhAk9fc&t=17s
Views: 1904 Tech Coach
Why Use Parallel Processing?
This video compares the use of parallel and serial processing for the same SQL query. Copyright © 2012 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.
How to Move Object from one Table Space to Another Table Space? | How to Rebuild the Index ?
This Video will teach you How to Move Object one Table Space to Another | How to Rebuild the Index ? move table from one tablespace to another in oracle 11g oracle move schema to another tablespace oracle how to move objects to another tablespace oracle 11g move schema to another tablespace alter table move tablespace oracle 8i oracle move table script oracle move cluster to new tablespace oracle move table example rebuild index oracle script alter index rebuild online parallel oracle rebuild all indexes oracle index rebuild online vs offline oracle rebuild partitioned index index rebuild oracle best practice index rebuild script in oracle 11g
Views: 757 Oracle PL/SQL World
Oracle Optimization - Table Partitions
Oracle optimization: create table partitions and Index-Organized Table. Other lessons, visit http://www.learn-with-video-tutorials.com/plsql-oracle-optimization
Global Index rebuild scenario in Oracle Database 11g
Why and How we need to rebuild global Index in Oracle 11g
Views: 2680 Athar Fahad
Oracle Performance - Indexes
Oracle Performance - Indexes
Views: 246 The Silent DBA
Oracle Hints Tutorial for improving performance with examples
Oracle Hints Tutorial for improving performance with examples Oracle Hints Oracle Tutorial for beginners SQL Tutorial for beginners SQL Hints SQL Performance tuning
Views: 1669 TechLake
Create Cluster in Oracle/ عربي
Cluster in oracle Database Create Cluster in oracle
Views: 3056 khaled alkhudari
Why Won't Oracle Use My Index - 12c Attribute Clustering - Lesson 1
Sometimes a poor clustering factor is the cause when Oracle Database cost based optimizer does not choose to use an index. With Oracle 12c ( EE) offers a new feature that can really help - "Atrribute Clustering". This is implemented with a new keyword on CREATE TABLE - "CLUSTERING BY LINEAR ORDER". In this Free Tutorial from SkillBuilders and Oracle Certified Master DBA John Watson, you'll get a brief refresher on clustering factor and a demonstration of CREATE TABLE - "CLUSTERING BY LINEAR ORDER" - so the CBO will use your index! In this first lesson, John will provide a brief review of clustering factor. See all 6 lessons - FREE - at http://www.skillbuilders.com/12c-attribute-clustering
Views: 346 SkillBuilders
Oracle GoldenGate - Tuning & Troubleshooting (Security, Trails, Networking)
Oracle GoldenGate - Tuning & Troubleshooting (Security, Trails, Networking) Watch more Videos at https://www.tutorialspoint.com/videotutorials/index.htm Lecture By: Mr. Dilip Padmanabhan, Tutorials Point India Private Limited.
Database Tutorial 62 - SQL CTAS method - Oracle DBA Tutorial
Database Tutorial 62 - SQL CTAS method - Oracle DBA tutorial, Oracle Database Tutorial This video explains about CTAS (Create Table As Select) method.
Views: 1582 Sam Dhanasekaran
When to use Oracle Database Bitmap Indexes Lesson 1
This tutorial will identify some use cases for Oracle bitmap indexes, including some of the more advanced capabilities. See all lessons, free, at http://www.skillbuilders.com/when-to-use-oracle-bitmap-indexes. Indexing your Oracle Database for best performance? There are cases, depending on data structures and queries, where b-tree indexes are not useful (e.g. scan access paths perform inadequately). In these cases, bitmap indexes may be a better solution. Bitmap indexes are a powerful tool, but they need to be used with care. Inappropriate use may cause problems worse than those they solve. The tutorial covers somewhat more advanced cases such as using bitmap join indexes to denormalize a snowflake schema, and to enable star transformations in queries that join fact tables to several dimension tables. This training will benefit any Oracle DBA administering a Data Warehouse or VLDB and "power" developers working in same. Instructor: Oracle Certified Master DBA John Watson, SkillBuilders
Views: 431 SkillBuilders
Oracle Star Transformation
Oracle Star Transformation
Views: 166 The Silent DBA
SQL Server Interview Question | What is the difference Between Index Rebuild and Index Reorganize
In this video you will be learning how to answer SQL Server DBA interview Question "What is the difference Between Index Rebuild and Index Reorganize?" Complete list of SQL Server DBA Interview Questions by Tech Brothers http://sqlage.blogspot.com/search/label/SQL%20SERVER%20DBA%20INTERVIEW%20QUESTIONS
Views: 17610 TechBrothersIT
Data Warehouse 9 ColumnStore Indexes
02:27 Row storage 05:40 ColumnStore Storage 12:32 ColumnStore Batch Mode and CPU caches 18:11 Demo ColumnStore Index Segment Elimination 31:28 Clustered Columstore Index Delta Store SQL Server 2012 Non-Clustered Columnstore Index, SQL Server 2014 Clustered Columnstore Index Brain Mitchell: What's New for Columnstore Indexes and Batch Mode Processing http://channel9.msdn.com/Events/TechEd/NorthAmerica/2013/DBI-B322#fbid=GMKVwjUCe2g
Views: 7239 Garrett Edmondson
Oracle Performance Tuning - Loading Data - 04 Direct Path Load
Connect with me or follow me at https://www.linkedin.com/in/durga0gadiraju https://www.facebook.com/itversity https://github.com/dgadiraju https://www.youtube.com/c/TechnologyMentor https://twitter.com/itversity
Views: 1775 itversity
Tuning the Data Warehouse: Indexing Techniques
In this video we discusses a few indexing techniques that can be used to boos Data Warehouse performance. (From the course IS5 Data Warehousing at Stockholm University)
Views: 3156 Joakim Snygg
Oracle SQL Tuning - Data Warehouse Star Transformations, Even with Standard Edition!
Joining large tables in a Data Warehouse will often generate star transformations in the execution plan. So, what is a star transformation? And, what if you don't have Enterprise Edition - so you can't build Bitmap Indexes? In this free tutorial, Oracle Master John Watson will demonstrate star transformations in EE and how to make them work even without bitmap indexes - Standard Edition can save you thousands in licensing fees! This is Part 3 of a 5 Part series. View all video tutorials at SkillBuilders.com/EqualSQL.
Views: 4525 SkillBuilders
Using Statement Queuing
This video demonstates how statement queuing functions when using parallel processing in Oracle Database 11g, Release 2. Copyright © 2012 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.
How to Detect Soft Corruption in Oracle 12c Database
Detection of Soft Corruption in 12c: To use the scripts below replace : , ",# and $ by proper bracket Lets Create a tablespace and small table. SQL: create tablespace DEMO1 datafile '/u02/tstdb1/TSTDB1/datafile/demo01.dbf' size 50M SQL: create table objects tablespace DEMO1 as select * from dba_objects; SQL: alter table objects add constraint pk_obj primary key #object_id$; SQL: create index idx_obj_name on objects#object_name$ tablespace demo1; Backup tablespace. RMAN: backup tablespace DEMO1; We need to put the DB in archivelog first Rebuild index with NOLOGGING option to simulate soft corruption later. RMAN: alter index idx_obj_name rebuild nologging; Confirm that we have datafiles that require backup because they have been affected with NOLOGGING operation. RMAN: report unrecoverable; Simulate corruption. RMAN: alter database datafile 5 offline; RMAN: restore datafile 5; RMAN: recover datafile 5; RMAN: alter database datafile 5 online; Query table with corrupted index and notice error. SQL: select count#*$ from objects where object_name like 'A%'; Let’s perform validation of datafile to check block corruption. RMAN: backup validate check logical datafile 5; Notice that we have 457 blocks marked corrupt but v$database_block_corruption view is empty. SQL: select count#*$ from v$database_block_corruption; Let’s query v$nonlogged_block view. set lines 200 set pages 999 select file#, block#, blocks,object#,reason from v$nonlogged_block; Will RMAN detect that we have corrupted blocks? RMAN: backup datafile 5; RMAN backup won’t fail due to NOLOGGING corrupt blocks and our backup will contain soft corrupted blocks. Let’s Identify corrupt segments using v$nonlogged_block view. set lines 2000 set pages 9999 col owner for a20 col partition_name for a10 col segment_name for a20 SELECT e.owner, e.segment_type, e.segment_name, e.partition_name, c.file# , greatest#e.block_id, c.block#$ corr_start_block# , least#e.block_id+e.blocks-1, c.block#+c.blocks-1$ corr_end_block# , least#e.block_id+e.blocks-1, c.block#+c.blocks-1$ - greatest#e.block_id, c.block#$ + 1 blocks_corrupted FROM dba_extents e, V$NONLOGGED_BLOCK c WHERE e.file_id = c.file# AND e.block_id "= c.block# + c.blocks - 1 AND e.block_id + e.blocks - 1 := c.block# UNION SELECT s.owner, s.segment_type, s.segment_name, s.partition_name, c.file# , header_block corr_start_block# , header_block corr_end_block# , 1 blocks_corrupted FROM dba_segments s, V$NONLOGGED_BLOCK c WHERE s.header_file = c.file# AND s.header_block between c.block# and c.block# + c.blocks - 1 UNION SELECT null owner, null segment_type, null segment_name, null partition_name, c.file# , greatest#f.block_id, c.block#$ corr_start_block# , least#f.block_id+f.blocks-1, c.block#+c.blocks-1$ corr_end_block# , least#f.block_id+f.blocks-1, c.block#+c.blocks-1$ - greatest#f.block_id, c.block#$ + 1 blocks_corrupted FROM dba_free_space f, V$NONLOGGED_BLOCK c WHERE f.file_id = c.file# AND f.block_id "= c.block# + c.blocks - 1 AND f.block_id + f.blocks - 1 := c.block# order by file#, corr_start_block# / This is the best outcome to get if you notice corruption errors. All errors are related to index corruption so we could fix this problem rebuilding index. alter index idx_obj_name rebuild; Simply issuing "alter index rebuild" command won't work. We should mark index unusable to drop segment before rebuilding it or just rebuild index with online option. It is better choice to mark index unusable because you don't need additional space then, but I will simply rebuild index with online option and see what will happen. SQL: alter index idx_obj_name rebuild online; Index altered. SQL: select count#*$ from objects where object_name like 'A%'; No errors... but, let's validate datafile for corruption. RMAN: backup validate check logical datafile 5; Notice "Marked Corrupt" column. Hm... 457 like before. Don't worry, this is not new corruption. These are FREE blocks which will be reused and Oracle will automatically re-format those blocks. Query the v$nonlogged_block view again as given above. We could force re-formatting creating dummy table and inserting data to dummy table. Check Doc ID 336133.1. create table s # n number, c varchar2#4000$ $ nologging tablespace DEMO1; SQL: BEGIN FOR i IN 1..1000000 LOOP INSERT /*+ APPEND */ INTO sys.s select i, lpad#'REFORMAT',3092, 'R'$ from dual; commit ; END LOOP; END; / SQL: drop table sys.s purge; Notice that we don't have corrupted blocks any more. RMAN: backup validate check logical datafile 5;
Views: 122 OracleDBA
What is the HASH PARTITION in Oracle ?
Hi guys in my today scenario I'm going to explain with you What is the HASH PARTITION in Oracle, Oracle database Unbeatable,Unbreakable Platform..
Views: 7094 Oracle World
Oracle Hints explained
Oracle Hints
Views: 300 Telugu Blast News
1Z0-595 – Oracle Exam Spatial 11g Test Essentials Questions
For more information on Oracle 1Z0-595 Practice Test Questions Please Visit: https://www.Pass-Guaranteed.com/1Z0-595.htm What am I going to be tested for? This 1Z0-595 certification exam covers topics such as: Describe test data validation and correction routines in 1Z0-595 Oracle Spatial, Use export and import utilities to move spatial data between exam databases, Move spatial data between 1Z0-595 databases by using transportable tablespaces, Create 1Z0-595 indexes, set index parameters, and create indexes in parallel, Describe index test metadata and find index size. Which are some of the topics of the 1Z0-595 Essentials exam? 1Z0-595 Test Topic 1: Loading and Validating Spatial Data Questions (Exam Coverage 18%) 1Z0-595 Test Topic 2: Indexing Spatial Data Questions (Exam Coverage 17%) 1Z0-595 Test Topic 3: Performing Spatial Queries Questions (Exam Coverage 20%) 1Z0-595 Test Topic 4: Performing Spatial Processing Questions (Exam Coverage 20%) 1Z0-595 Test Topic 5: Oracle Web Services Questions (Exam Coverage 15%) 1Z0-595 Test Topic 6: Workspace Manager Questions (Exam Coverage 10%) Who can attend to the Oracle Spatial 11g Essentials test? Candidates must have a basic understanding of: Describe the 1Z0-595 data types, data test models, coordinate systems, indexing structure, query exam model, and types of spatial queries, Describe the Oracle Spatial schema and how spatial data is represented in the 1Z0-595 database, Explain the differences between spatial operators and spatial test functions. Can you give me some in-depth information on the 1Z0-595 exam topics? • Explain spatial metadata test structures and views • Perform 1Z0-595 transactional inserts • Write Oracle queries finding correlations between two spatial layers • Write queries combining spatial and non-spatial exam criteria • Describe the functions for conversion from/to OGC exam formats • Generate GML documents from spatial test objects • Modify geometries using 1Z0-595 PL/SQL • Use the Java API to work with 1Z0-595 geometries What’s the 1Z0-595 passing score and duration? The duration of this exam is 120 minutes (76 questions) and the minimum passing score is 62%.
Views: 439 Orsan Stubell
Oracle SQL Performance Tuning  1
Oracle SQL Performance Tuning and tips Cost Based Optimizer (CBO) Rule Based Optimizer (RBO) SQL Explain Plan Oracle Explain Plan
Views: 8203 TechLake
Parallel Execution Skew in less than four minutes
Learn what I've published about the topic "Parallel Execution Skew" in this four minutes summary
Views: 566 Randolf Geist
Performance Tuning CPU issues with indexes
Jayanth @Enabled Business In this video we cover how to identify if there is a CPU issue and follow one of the many paths available to improve performance by using Indexes in SQL Server table. We cover how CPU issues are manifested using CXPACKETS wait type for parallelism and how using the right Non Clustered Indexes within the OLTP design we can improve not just the query execution times but also bring down th CPU issues as well. The target audience for this video is novice to intermediate DBAs and developers who are looking to learn a bit more about troubleshooting CPU issues in MS SQL Server.
Views: 766 Jayanth Kurup
Oracle DB Vs MySQL for Enterprise DataBase Deployments
Oracle DB is big, and expensive, but it brings a lot to the "table" when compared with MySQL. MySQL has limited ability to audit. MySQL's security is unsophisticated. There are no groups or roles, no ability to deny a privilege (you can only grant privileges). A user who logs in with the same username and password from different network addresses may be treated as a completely separate user. There is no built-in encryption comparable to Oracle. MySQL's Authentication is built-in. There is no LDAP, Active Directory, or other external authentication capability. MySQL has no MPP (massively parallel processing ) support. Unlike Oracle MySQL has no fractional-second storage type for times, dates, or intervals. There is no RAC (Real Application Cluster) support in My SQL, and no failover or server promotion either. These are strong features in Oracle MySQL's number of joins per query is limited to 61. Oracle's limit is much larger. MySQL Replication is asynchronous and has many limitations and edge cases. For example, it is single-threaded, so a powerful slave can find it hard to replicate fast enough to keep up with a less powerful master.
Views: 20038 Biz of Tech
Why Has an Index Broken My Query?
Sometimes Oracle can give unexpected exceptions. This often happens when working with dates stored as strings. In this video, Chris investigates why adding an index to a varchar storing dates could cause a query to fail. He explains why this happens. Then he shows workaround to avoid this. You can download the scripts in this video from LiveSQL at: https://livesql.oracle.com/apex/livesql/file/content_CVN82PZQWQSUFYMOVKG0VI19T.html ============================ 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: 2862 The Magic of SQL
Troubleshooting Oracle PL/SQL with DBMS_PROFILER and DBMS_UTILITY
Themis instructor John Mullins helps you gain an understanding of how to use the Oracle PL/SQL dbms_profiler and dbms_utilitypackages to troubleshoot and handle PL/SQL performance issues, program errors and exceptions.
Views: 3530 Themis Education
Oracle Performance Tuning - Loading Data - 05 Direct Path Load
Connect with me or follow me at https://www.linkedin.com/in/durga0gadiraju https://www.facebook.com/itversity https://github.com/dgadiraju https://www.youtube.com/c/TechnologyMentor https://twitter.com/itversity
Views: 1590 itversity
Improving SELECT * Query Performance by Erik Darling
You’re a DBA or Developer, and you have a gut feeling that these simple queries with an egregious number of columns in the SELECT list are dragging your server down. You’re not quite sure why, or how to index for them. Worst of all, no one seems to be okay with you returning fewer columns. In this session, you’ll learn why and when queries like this are a problem, your indexing options, and even query tuning methods to make them much faster. Get more information here: https://groupby.org/conference-session-abstracts/improving-select-query-performance
Views: 973 GroupBy
Oracle Virtual Column
Oracle Virtual Column https://easy-learning-tech.blogspot.in/2018/05/virtual-column-in-oracle.html
Views: 24 Siva Academy
Using Parallel GROUP BY
This video shows you the behavior of the GROUP BY clause when run in serial and in parallel. Copyright © 2012 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 ForAll Clause
This video will explain you, what is Oracle FORALL clause, how this helps to enhance performance.
Views: 1989 amit wadbude
4  merge statement
Video from our Oracle SQL course. Check out the full course at.. http://learn.hackpress.co/courses/oracle-sql-learning-by-example
Views: 12215 etldeveloper
Oracle#1 Materialized view performance improvement on complete refresh
This video explains how to improve performance of materialized view while doing complete refresh in oracle. Here i have created table and materialized view and described the refresh options. Also demonstrated with small script to compare the performance impact Oracle version used: Oracle 11gR2 Oracle client tool: Oracle SQL Developer Try to create our own table with more no of rows and observe the performance impact.
Views: 576 ShareTechTip
Efficient Function Calls From SQL (Part 5) : Pipelined Table Functions
The fifth part of a mini-series of videos showing how you can improve the performance of function calls from SQL. In this episode, we compare the performance of conventions table functions with pipelined table functions. For more information see: https://oracle-base.com/articles/misc/pipelined-table-functions https://oracle-base.com/articles/misc/efficient-function-calls-from-sql Website: https://oracle-base.com Blog: https://oracle-base.com/blog Twitter: https://twitter.com/oraclebase Cameo by Mike Dietrich : Blog: https://blogs.oracle.com/UPGRADE Twitter: https://twitter.com/MikeDietrichDE Cameo appearances are for fun, not an endorsement of the content of this video.
Views: 10736 ORACLE-BASE.com
performance tuning
Tracing: Transaction ST12 = Combination of two transactions . SAT (ABAP Trace) , ST05 = SQL Trace SQL Trace: To monitor the database access of reports and transactions. Less common traces : Enqueue Trace: (the locking system),RFC Trace, Table buffer trace: Performance Improvements ABAP Coding: Keep an eye on those loops. Select statements in loops = absolutely avoid = use for all entries instead Function call, or performs in loops = re - visit and see if you can optimize The "READ TABLE" statement Sorted table- Binary search .. Or even better use "Index" on internal tables. Use mass operations on internal table = internal table copy one to another, Append lines of int_fligh1 to int_fligh2. Use field symbols to modify internal table in a loop (minor improvement ) A little trick if you call performs in a loop:: Use static variables Avoid sleep, wait etc commands.. Or synchronous RFC calls 2)Database bottleneck Use Indexes : Make sure Indexes are being used in your select statement (check with trace if needed) Extreme case , create new index (this has the disadvantage of making the insert slower) Select -- End select loop : Usually database optimiser will fix it, still avoid it Select * into corresponding fields = about a millisecond slower Make clever use of inner joins Use views Use (max,min, avg): example : Select max( flightnum ) from flight . GET RUN TIME command Reduce I/O first, then memory, then CPU activity.Field-groups can be useful for multi-level sorting and displaying. However, they write their data to the system's paging space, rather than to memory (internal tables use memory)
Views: 14032 Sourabh Bora
Oracle PL/SQL Best Practices Part 2
Themis instructor John Mullins provides more great tips on Oracle PL/SQL!
Views: 966 Themis Education
Oracle Database 12c: Adaptive Execution Plans with Tom Kyte
Tom Kyte introduces adaptive execution plans followed by a demo. "Adaptive Plans" in SQL Tuning Guide" http://www.oracle.com/pls/topic/lookup?ctx=db121&id=TGSQL221 "Controlling Adaptive Optimization" http://www.oracle.com/pls/topic/lookup?ctx=db121&id=TGSQL257 "Generating and Displaying SQL Execution Plans" http://www.oracle.com/pls/topic/lookup?ctx=db121&id=TGSQL271 "Keeping Your Database Secure" http://www.oracle.com/pls/topic/lookup?ctx=db121&id=DBSEG009
Views: 13148 OracleDBVision
SQL Server Linked Servers
Learn more about Logical Read: http://bit.ly/logicalread2 SQL Server’s Linked Servers allow you to seamlessly integrate SQL Server applications with the tables, indexes and views stored in an Oracle database. Watch this video to understand the requirements and configuration for setting up a SQL Server 2014 linked server to Oracle 12c. Connect with SolarWinds: thwack Community: http://thwack.solarwinds.com/ Facebook: https://www.facebook.com/SolarWinds Twitter: https://twitter.com/solarwinds Google+: https://plus.google.com/+solarwinds/ LinkedIn: http://www.linkedin.com/company/solarwinds Instagram: http://instagram.com/solarwindsinc/ Vine: https://vine.co/SolarWinds Flickr: http://www.flickr.com/photos/solarwinds_inc/
Views: 7194 solarwindsinc
Oracle Tuning Tutorial - Long Full Table Scans Part 5 of 5
See all 5 tutorials, free, at SkillBuilders.com/OracleTuningFullTableScans. In summary, serial full table scans were always indirect before 11.2, parallel scans always direct before 11.2. These are the two critical parameters. That hidden parameter _serial_direct_read, remember, defaults to auto so your application may start behaving very differently as you upgrade from 11.2.01 or 11.2.02. Parallel_degree_policy, that defaults to manual. But again, it becomes an option when you go to 11.2 to enable the automatic facility which allows not only automatic tuning to the degree of parallelism but also enables the ability to make indirect reads when doing a full table scan.
Views: 1553 SkillBuilders
Oracle Performance Tuning online Training and Support
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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SQL Server DBA Tutorial 147-Diff b/w inplace & Parallel or side by side Migration in SQL Server
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