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Why Use Parallel Processing?
 
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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.
Oracle Hints Tutorial for improving performance
 
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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: 5037 TechLake
Oracle Performance Tuning - Loading Data - 04 Direct Path Load
 
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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: 1816 itversity
DML Processing in an Oracle Database -  DBArch Video 8
 
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This video explains the steps involved in processing a DML statement in an Oracle Database Server. 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: 47463 Ramkumar Swaminathan
Oracle Tutorial - Insert into a table in different ways
 
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Oracle Tutorial: Insert into a Table in different ways
Views: 30 Tech Acad
How to Create Database Link in Oracle. /* Step By Step /*
 
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Today I am showing you. How to create Database link (DB Link) in Oracle. What is Database Link ( DB Link ) ? A database link is a schema object in one database that enables you to access objects on another database. I have 2 databases 1. paragdb 2. orcl In Paragdb database 1. Create listener 2. Service Name 3. In Orcl Database 1. Create Listener 2. Service Name 3. Create new User 4.Grant connect,resource,create database link to username; 5. open user 6. create database link 1. create database link link1 connect to scott identified by tiger using 'connect_primary''; 7.select * from [email protected]; 8. select * from [email protected]; 9. views 1. select * from user_db_links; 2. select * from all_db_links; 10. conn sys as sysdba 11. grant public database link to username; 12. select * from dba_db_links; 13. conn username/pass 14. create public database link plink connect to scott identified by tiger using 'connect_primary'; 15. drop database link. drop database link link1; To follow this steps you will also create oracle database link. It is very easy to understand.
Views: 7248 Parag Mahalle
How Oracle SQL Query work
 
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This video will give to understanding of SQL Parsing, Syntatic check , semantic check, spool file check, Sql Optimization, row source generation and sql execution.
Views: 17916 amit wadbude
Oracle Connector Stage : Video 9 (HD)
 
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Explained clearly about the Oracle Connector Stage & clearly explained all the stage properties. Now need to worry about searching my videos. Added videos to my playlist and here's the link......... http://www.youtube.com/playlist?list=PLeF_eTIR-7UpGbIOhBqXOgiqOqXffMDWj
Views: 25815 Tutorial
Real-World Performance - 4 - Bind Variables and Soft Parse
 
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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 demonstrates how bind variables and soft parsing make significant performance gains as they contribute to transaction throughput and reverse the mistakes of a poor configuration. 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 Performance Tuning - Loading Data - 05 Direct Path Load
 
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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: 1628 itversity
Oracle 11g Hints Overview
 
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In this Video tutorial we will discuss about Optimizer hints in Oracle. What is optimizer hint, when & why its needed. Different Category of hints. Description of mostly used hints. Demonstrate how query plan can change with the influence of hint.
Views: 50995 Anindya Das
PL SQL Oracle BULK COLLECT tutorial
 
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BULK COLLECT reduces context switches between SQL and PL/SQL engine and allows SQL engine to get many rows at once.
Oracle Integration with Visual Studio 2012
 
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This is a demonstration of the Oracle Developer Tools for Visual Studio, a Visual Studio "add-in" which is free and available for download from Oracle at http://otn.oracle.com/dotnet Visual Studio 2012, 2010 and 2008 are all supported. Featured demoed here include: * Server Explorer Integration * Table Designer * Entity Designer integration * PL/SQL editor and debugger * SQL Script Generation * SQL Script Editor * Source control integration * SQL Tuning Advisor * Oracle Performance Analyzer To try these features out, download ODAC 11.2 Release 5 or later. As with earlier releases of Visual Studio, Oracle has partnered closely with Microsoft as part of the Visual Studio Industry Partner Program to make the simultaneous release of this product with Visual Studio 2012 possible. More Oracle .NET videos can be found at https://www.youtube.com/user/OracleDOTNETTeam/
Views: 96337 Oracle .NET
Bulk collect and update in oracle plsql with example
 
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Bulk collect in oracle with limit clause example
Views: 1057 Oracle PL/SQL
PL/SQL tutorial 74: PL/SQL Bulk Collect Clause with FETCH-INTO statement of an explicit cursor
 
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RebellionRider.com presents a PL/SQL tutorial on how to use PL/SQL Bulk Collect with Fetch-Into statement of an explicit cursor in Oracle Database. Watch and learn how to enhance query performance with Bulk Collect in Oracle Database by Manish Sharma. ------------------------------------------------------------------------ ►►►LINKS◄◄◄ Blog: http://bit.ly/bulk-collect-3 Previous Tutorial ► Introduction to Bulk Collect: https://youtu.be/HPVzFBluM_Q ► Explicit Cursor: https://youtu.be/3q7dW_d2KVc ► Simple Loop: https://youtu.be/AFx6QYcY1CU ► The script on GIT: https://github.com/RebellionRider/pl-sql-tut-74.git ------------------------------------------------------------------------- ►Make sure you SUBSCRIBE and be the 1st one to see my videos! ------------------------------------------------------------------------- ►►►Find me on Social Media◄◄◄ Follow What I am up to as it happens on https://twitter.com/rebellionrider http://instagram.com/rebellionrider https://plus.google.com/+Rebellionrider http://in.linkedin.com/in/mannbhardwaj/ ___Facebook Official Page of Manish Sharma___ https://www.facebook.com/TheRebellionRider/ ___Facebook Official Page of RebellionRider.com___ https://www.facebook.com/RebellionRider.official/ For E-mail address please check the About section Please please LIKE and SHARE my videos it makes me happy. Thanks for liking, commenting, sharing and watching more of our videos This is Manish from RebellionRider.com ♥ I LOVE ALL MY VIEWERS AND SUBSCRIBERS
Views: 7527 Manish Sharma
SQL * Loader Tutorial 5: SQL Loader SKIP & FILLER options
 
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SQL * Loader Tutorial 5: SQL Loader SKIP & FILLER options SQL * Loader SKIP & FILLER options SQL Tutorial SQL Tutorial for beginners PLSQL Tutorial PLSQL Tutorial for beginners PL/SQL Tutorial PL SQL Tutorial PL SQL Tutorial for beginners PL/SQL Tutorial for beginners Oracle SQL Tutorial
Views: 520 TechLake
Real-World Performance - 8 - Set Based Parallel Processing
 
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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 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.
SSIS Tutorial Part 60-Perform Upsert  (Update/Insert  SCD1) by Lookup Transformation in SSIS Package
 
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SSIS Tutorial Scenario: Let's say we have to load a dimension table from text file. Our business Key is SSN. We need to insert new records depending upon values of SSN column, If any new then we need to insert this records. If SSN already existing in Table then we need to find out if any other column is changed from Source columns values. If that is true then we have to update those values. What we will learn in this video How to Read the data from Flat file in SSIS Package How to perform Lookup to Find out Existing or Non Existing Records in Destination Table From Source How to Insert new Records by using OLE DB Destination How to update existing Records by using OLE DB Command Transformation in SSIS Package Link to the blog post for this video with script if used http://sqlage.blogspot.com/2015/05/perform-upsert-updateinsert-scd1-by.html Check out our Full Step by Step SQL Server Integration Services(SSIS) Tutorial http://www.techbrothersit.com/2014/12/ssis-videos.html
Views: 31155 TechBrothersIT
Data Stage : Importing ODBC Oracle Table Definitions
 
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Importing ODBC Oracle Table Definitions
Views: 412 Raja Sekhar
Parallel Executions of Tasks in SSIS - SQL Server Integration Services (SSIS) Tutorial
 
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In this SQL Server Integration Services(SSIS) Interview question video, you will learn the answer of question "What is parallel execution in SSIS, and how many Data Flow Tasks can apackage run in parallel?" I totally forgo to mention if Hypder-threading is enable then it will be number of logical processors +2 , those many executable can run in parallel. Complete list of SSIS Interview Questions by Tech Brothers http://sqlage.blogspot.com/search/label/SSIS%20INTERVIEW%20QUESTIONS
Views: 11725 TechBrothersIT
How to Add Gateways to a Process Model in Business Process Composer
 
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This video demonstrates how to add two types of gateways to a process model in Business Process Composer: an exclusive gateway, and a parallel gateway. 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.
SQL Create Temp Table and Insert With Select Adventure Works Example
 
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How to create a temp table in sql with CREATE TABLE and populate the table with a select statement. Part 1 uses SELECT INTO: https://www.youtube.com/watch?v=s1Clw23uMrs
Views: 744 Blake B
How to insert job parameters in DataStage parallel  job
 
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DataStage jobs can be parameterized to allow for portability and flexibility. Parameters are used to pass values for variables into jobs at run time. There are two types of parameters supported by DataStage jobs: Standard job parameters --Are defined on a per job basis in the job properties dialog box. --The scope of a parameter is restricted to the job. --Used to vary values for stage properties, and arguments to before/after job routines at runtime. --No external dependencies, as all parameter metadata is a sub element to a single job. Environment variable parameters: --Use operating system environment variable concept. --Provide a mechanism for passing the value of an environment variable into a job as a job parameter (Environment variables defined as job parameters start with a $ sign). --Are similar to a standard job parameter in that it can be used to vary values for stage properties, and arguments to before/after job routines. --Provide a mechanism to set the value of an environment variable at runtime. DataStage provides a number of environment variables to enable / disable product features, fine-tune performance, and to specify runtime and design time functionality (for example, $APT_CONFIG_FILE).
Views: 6492 WingsOfTechnology
Query for employee who hired before 15th of every month in date
 
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Hello friends in SQL language you can write a query for employee who hired before 15th of every month in date easily. Oracle database Unbeatable,Unbreakable Platform..
Views: 2239 Oracle World
Creation of sample parallel job in IBM Infosphere DataStage 7.5
 
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This tutorial shows how to create a sample parallel job in IBM Infosphere DataStage 7.5 version. Here used 2 sequential stages and 1 transformer to create a parallel job.
Views: 5713 WingsOfTechnology
SQL Server Performance Tuning  Controlling Parallelism
 
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Parallelism seems like it should be one of those things that the query engine takes care of for us, but it does require some care and tending from time to time. The default server configurations are no longer adequate for controlling parallelism, and DBAs need to know how to tweak the settings to make it run optimally. When parallelism goes awry, it can cause severe performance problems. Sometimes only for a specific query, sometimes it can hurt performance server-wide. To add a little complexity to the mix, parallelism can also be controlled by query hints and Resource Governor. Understanding how these three options for setting the Max Degree of Parallelism interact and who wins when they conflict is critical in being able to understand how to control it. Robert is a SQL Server Certified Master, MVP, and experienced DBA, evangelist, speaker, writer, and trainer. He has worked with SQL Server for 15+ years. He recently worked for Outerwall, Idera Software, and Microsoft. He served as PM for the SQL Server Certified Master Program at Microsoft Learning, and as a production DBA at Microsoft. He currently works as a principal database architect at DB Best Technologies. Robert is co-founder and co-leader of the PASS Security Virtual Chapter.
Views: 2916 DBAFundamentals
Oracle Bulk Collect, Part I
 
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Bulk collect is a good choice when you need to fetch large volumes of data and populate tables.
Views: 278 Blanca Keogh
Incremental Data Load - The SSIS Approach
 
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https://www.youtube.com/user/masterkeshav This blog demonstrates Staging to Production Data Sync up. We look to take the SSIS approach and see the options available to be able to sync up Insert/Update/Delete for changed records from the Staging to the Production tables.
Views: 47715 Keshav Singh
Real-time Task 1-Parallel Format Extract of Metadata: Video 44 (HD)
 
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This video explains what is a parallel format & how to extract from the table definition in Datastage 8.5.
Views: 5111 Tutorial
When to use Oracle Database Bitmap Indexes Lesson 1
 
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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: 484 SkillBuilders
Insert Data into SQL using JDBC,MySQL in Java Swings-  Internship Project - VLSA
 
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IEEE PROJECTS 2016 1 crore projects is a leading Guide for ieee Projects and real time projects Works Provider. It has been provided Lot of Guidance for Thousands of Students & made them more beneficial in all Technology Training. Dot Net DOTNET Project Domain list 2016 1. IEEE based on datamining and knowledge engineering 2. IEEE based on mobile computing 3. IEEE based on networking 4. IEEE based on Image processing 5. IEEE based on Multimedia 6. IEEE based on Network security 7. IEEE based on parallel and distributed systems Java Project Domain list 2016 1. IEEE based on datamining and knowledge engineering 2. IEEE based on mobile computing 3. IEEE based on networking 4. IEEE based on Image processing 5. IEEE based on Multimedia 6. IEEE based on Network security 7. IEEE based on parallel and distributed systems ECE IEEE Projects 2016 1. Matlab project 2. Ns2 project 3. Embedded project 4. Robotics project Eligibility Final Year students of 1. BSc (C.S) 2. BCA/B.E(C.S) 3. B.Tech IT 4. BE (C.S) 5. MSc (C.S) 6. MSc (IT) 7. MCA 8. MS (IT) 9. ME(ALL) 10. BE(ECE)(EEE)(E&I) TECHNOLOGY USED AND FOR TRAINING IN 1. DOT NET 2. C sharp 3. ASP 4. VB 5. SQL SERVER 6. JAVA 7. J2EE 8. STRINGS 9. ORACLE 10. VB dotNET 11. EMBEDDED 12. MAT LAB 13. LAB VIEW 14. Multi Sim CONTACT US 1 CRORE PROJECTS Door No: 214/215,2nd Floor, No. 172, Raahat Plaza, (Shopping Mall) ,Arcot Road, Vadapalani, Chennai, Tamin Nadu, INDIA - 600 026 Email id: [email protected] website:1croreprojects.com Phone : +91 97518 00789 / +91 72999 51536
performance tuning
 
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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: 14673 Sourabh Bora
Sequential File Stage in DataStage Server Jobs : Video 4 (HD)
 
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Sequential File Stage in DS Server with all of its properties and the tabs clearly explained!! Now need to worry about searching my videos. Added videos to my playlist and here's the link......... http://www.youtube.com/playlist?list=PLeF_eTIR-7UpGbIOhBqXOgiqOqXffMDWj
Views: 55526 Tutorial
Real-World Performance - 6 - Leaking Cursors
 
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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 demonstrates how leaking cursors affect 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
SQL Server Destination vs OLE DB Destination - SSIS Interview Questions
 
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You will learn what is the difference between SQL Server Destination and OLE DB Destination in SSIS Package. This video can also be used to answer SQL Server Integration Services(SSIS) Interview Question " What is the difference between OLE DB Destination and SQL Server Destination?" What is SQL Server Destination in SSIS Package Diff between OLE DB destination and SQL Server Destination in SSIS Package Complete List of SSIS Interview Questions http://sqlage.blogspot.com/search/label/SSIS%20INTERVIEW%20QUESTIONS
Views: 8551 TechBrothersIT
How to Detect Soft Corruption in Oracle 12c Database
 
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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: 133 OracleDBA
introduction to sql - Subqueries
 
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Course Description – sql1 COURSE DESCRIPTION: The Oracle server extends the data modeling capabilities to support an object relational database model that brings object-oriented programming, complex data types, complex business objects, and full compatibility with the relational world. It includes several features for improved performance and functionality of online transactionprocessing (OLTP) applications, such as better sharing of run-time data structures, larger buffer caches, and deferrable constraints. Data warehouse applications will benefit from enhancements such as parallel execution of insert, update, and delete operations; partitioning; and parallel-aware query optimization. COURSE OBJECTIVES: in this course List the capabilities of SQL SELECT statements Execute a basic SELECT statement Differentiate between SQL statements and iSQL*Plus commands Limit the rows retrieved by a query Sort the rows retrieved by a query WHO SHOULD ATTEND?   COURSE OUTLINE: In this lesson, you should have learned howtheOracleserverusesconstraints to prevent invalid data entry into tables. You also learned how to implement the constraints in DDL statements.   Writing Basic SQL SELECT Statements Restricting and Sorting Data Single-Row Functions Displaying Data from Multiple Tables Aggregating Data Using Group Functions Subqueries Producing Readable Output with iSQL*Plus Manipulating Data Creating and Managing Tables Including Constraints
SSIS Tutorial Part 130-How To Execute Stored Procedure In Script Task in SSIS Package
 
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SSIS Video Tutorial Scenario: We need to get folder name from FTP Sever Directory and Insert them in SQL Server Table. Solution: we will be using Script Task to perform this requirement. here are the things we will cover in this video Create SQL Server Table and Stored Procedure to insert Folder Name Create an SSIS Package from basics Use Script Task with FTP connection and ADO NET Connection, Get List of Folders from FTP Server and then execute Stored Procedure in Script Task to insert folder Name into table. Link to the blog post for this video with script if used http://sqlage.blogspot.com/2015/05/how-to-execute-stored-procedure-in.html
Views: 7793 TechBrothersIT
ODBC Connector Stage : Video 8 (HD)
 
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Basic & brief knowledge about ODBC Connector Stage, which is one of the Database Stages in Parallel Jobs Now need to worry about searching my videos. Added videos to my playlist and here's the link......... http://www.youtube.com/playlist?list=PLeF_eTIR-7UpGbIOhBqXOgiqOqXffMDWj
Views: 23703 Tutorial
Simple DataStage Parallel Job Using Funnel Stage
 
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The Funnel stage is a processing stage. It copies multiple input data sets to a single output data set. This operation is useful for combining separate data sets into a single large data set. The stage can have any number of input links and a single output link.
Views: 1067 WingsOfTechnology
SQL Create Temp Table With Select Into Adventure Works And TempDB (Important)
 
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Easiest way to create a temp table in SQL. How to create temp table in sql for beginners. Easy temp table in sql adventure works Using select into.
Views: 607 Blake B
Transformer Stage - Part 2: DS Macros: Video 26 (HD)
 
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Clearly explained each & every DS Macros functionality in Transformer Stage in Parallel Jobs in DataStage. Now need to worry about searching my videos. Added videos to my playlist and here's the link......... http://www.youtube.com/playlist?list=PLeF_eTIR-7UpGbIOhBqXOgiqOqXffMDWj
Views: 16143 Tutorial
Bulk Data Operations in Salesforce | INSERT & UPDATE using Data Loader | www.jeet-singh.com
 
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Salesforce Online Training by Jeet Singh | www.jeet-singh.com WhatsApp: +91 90366 00097 | Phone: US - 408 755 9120 / India - 90366 00097
Views: 1766 Jeet Singh
04 Oracle Stream Analytics - K Means Clustering Pattern
 
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K-Means Clustering Use this pattern to investigate anomalies that are being potentially identified in a predictive fashion over a streaming time period. ================================= For more information, see http://www.oracle.com/goto/oll Copyright © 2016 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.
What is DISTRIBUTED DATABASE? What does DISTRIBUTED DATABASE mean? DISTRIBUTED DATABASE meaning
 
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What is DISTRIBUTED DATABASE? What does DISTRIBUTED DATABASE mean? DISTRIBUTED DATABASE meaning - DISTRIBUTED DATABASE definition - DISTRIBUTED DATABASE explanation. Source: Wikipedia.org article, adapted under https://creativecommons.org/licenses/by-sa/3.0/ license. A distributed database is a database in which storage devices are not all attached to a common processing unit such as the CPU, and which is controlled by a distributed database management system (together sometimes called a distributed database system). It may be stored in multiple computers, located in the same physical location; or may be dispersed over a network of interconnected computers. Unlike parallel systems, in which the processors are tightly coupled and constitute a single database system, a distributed database system consists of loosely coupled sites that share no physical components. System administrators can distribute collections of data (e.g. in a database) across multiple physical locations. A distributed database can reside on network servers on the Internet, on corporate intranets or extranets, or on other company networks. Because they store data across multiple computers, distributed databases can improve performance at end-user worksites by allowing transactions to be processed on many machines, instead of being limited to one. Two processes ensure that the distributed databases remain up-to-date and current: replication and duplication. 1. Replication involves using specialized software that looks for changes in the distributive database. Once the changes have been identified, the replication process makes all the databases look the same. The replication process can be complex and time-consuming depending on the size and number of the distributed databases. This process can also require a lot of time and computer resources. 2. Duplication, on the other hand, has less complexity. It basically identifies one database as a master and then duplicates that database. The duplication process is normally done at a set time after hours. This is to ensure that each distributed location has the same data. In the duplication process, users may change only the master database. This ensures that local data will not be overwritten. Both replication and duplication can keep the data current in all distributive locations. Besides distributed database replication and fragmentation, there are many other distributed database design technologies. For example, local autonomy, synchronous and asynchronous distributed database technologies. These technologies' implementations can and do depend on the needs of the business and the sensitivity/confidentiality of the data stored in the database, and the price the business is willing to spend on ensuring data security, consistency and integrity. When discussing access to distributed databases, Microsoft favors the term distributed query, which it defines in protocol-specific manner as "ny SELECT, INSERT, UPDATE, or DELETE statement that references tables and rowsets from one or more external OLE DB data sources". Oracle provides a more language-centric view in which distributed queries and distributed transactions form part of distributed SQL. Today the distributed DBMS market is evolving dramatically, with new, innovative entrants and incumbents supporting the growing use of unstructured data and NoSQL DBMS engines, as well as XML databases and NewSQL databases. These databases are increasingly supporting distributed database architecture that provides high availability and fault tolerance through replication and scale out ability. Some examples are Aerospike, Cassandra, Clusterpoint, ClustrixDB, Couchbase, Druid (open-source data store), FoundationDB, NuoDB, Riak and OrientDB. The blockchain technology popularised by bitcoin is an implementation of a distributed database.
Views: 8201 The Audiopedia
Scaling Postgres Episode 23 | UUIDs | Write Spikes | Distinct | SQL Standard
 
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Subscribe at https://www.scalingpostgres.com to get notified of new episodes. In this episode of Scaling Postgres, we review articles covering UUIDs, the source of write spikes, uses of distinct and SQL standards support. Links for this episode: http://richardstartin.uk/uuids-and-compressibility/ https://medium.com/cermati-tech/troubleshooting-daily-write-spikes-on-cermatis-postgresql-rds-9016d7a0c2e4 https://www.citusdata.com/blog/2018/07/25/high-performance-distributed-dml/ https://medium.com/statuscode/the-many-faces-of-distinct-in-postgresql-c52490de5954 https://modern-sql.com/slides/PG-stays-ahead-20180718.pdf https://tapoueh.org/blog/2018/07/batch-updates-and-concurrency/ https://info.crunchydata.com/blog/wheres-my-replica-troubleshooting-streaming-replication-synchronization-in-postgresql
Views: 581 Scaling Postgres
Optimize Code with Merge Statement in Oracle PLSQL.
 
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Merge Statement in PLSQL not only optimize you code, it also make you code looks good and readable, save you from using a long and redundant code like using cursor loop, plsql collection object, all done with a few line of statement.
Views: 1041 Subhroneel Ganguly
Sequential File Stage in Parallel Jobs: Video 12 (HD)
 
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Explained Sequential File Stage & most of it's important properties. Now need to worry about searching my videos. Added videos to my playlist and here's the link......... http://www.youtube.com/playlist?list=PLeF_eTIR-7UpGbIOhBqXOgiqOqXffMDWj
Views: 29648 Tutorial

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