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: 10282 TechLake
SQL * Loader Tutorial 4 : SQL Loader Insert options INSERT, APPEND , REPLACE and TRUNCATE 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: 843 TechLake
In this tutorial we'll learn to use the INSERT Query to copy data from one table into another.
Views: 270789 The Bad Tutorials
Text Article http://csharp-video-tutorials.blogspot.com/2017/02/sql-script-to-insert-into-many-to-many.html Slides http://csharp-video-tutorials.blogspot.com/2017/02/sql-script-to-insert-into-many-to-many_6.html SQL Server Interview Questions and Answers text articles & slides http://csharp-video-tutorials.blogspot.com/2014/05/sql-server-interview-questions-and.html SQL Server Interview Questions and Answers playlist https://www.youtube.com/playlist?list=PL6n9fhu94yhXcztdLO7i6mdyaegC8CJwR All Dot Net and SQL Server Tutorials in English https://www.youtube.com/user/kudvenkat/playlists?view=1&sort=dd All Dot Net and SQL Server Tutorials in Arabic https://www.youtube.com/c/KudvenkatArabic/playlists In this video we will discuss how to insert data into a table that has many-to-many relationship Create table Students ( Id int primary key identity, StudentName nvarchar(50) ) Go Create table Courses ( Id int primary key identity, CourseName nvarchar(50) ) Go Create table StudentCourses ( StudentId int not null foreign key references Students(Id), CourseId int not null foreign key references Courses(Id) ) Go Students - Id column is identity column Courses - Id column is identity column StudentCourses - StudentId and CourseId columns are foreign keys referencing Id column in Students and Courses tables As you can see, StudentCourses is a bridge table that has many to many relationship with Students and Courses tables. This means a given student can be enrolled into many courses and a given course can have many students enrolled. Below is the question asked in an interview for SQL Server Developer role. Write a SQL script to insert data into StudentCourses table. Here are the rules that your script should follow. 1. There will be 2 inputs for the script Student Name - The name of the student who wants to enroll into a course Course Name - The name of the course the student wants to enroll into 2. If the student is already in the Students table, then use that existing Student Id. If the student is not already in the Students table, then a row for that student must be inserted into the Students table, and use that new student id. 3. Along the same lines, if the course is already in the Courses table, then use that existing Course Id. If the course is not already in the Courses table, then a row for that course must be inserted into the Courses table, and use that new course id. 4. There should be no duplicate student course enrollments, i.e a given student must not be enrolled in the same course twice. For example, Tom must not be enrolled in C# course twice. Answer : To avoid duplicate student course enrollments create a composite primary key on StudentId and CourseId columns in StudentCourses table. With this composite primary key in place, if someone tries to enroll the same student in the same course again we get violation of primary key constraint error. Alter table StudentCourses Add Constraint PK_StudentCourses Primary Key Clustered (CourseId, StudentId) Here is the SQL script that inserts data into the 3 tables as expected Declare @StudentName nvarchar(50) = 'Sam' Declare @CourseName nvarchar(50) = 'SQL Server' Declare @StudentId int Declare @CourseId int -- If the student already exists, use the existing student ID Select @StudentId = Id from Students where StudentName = @StudentName -- If the course already exists, use the existing course ID Select @CourseId = Id from Courses where CourseName = @CourseName -- If the student does not exist in the Students table If (@StudentId is null) Begin -- Insert the student Insert into Students values(@StudentName) -- Get the Id of the student Select @StudentId = SCOPE_IDENTITY() End -- If the course does not exist in the Courses table If (@CourseId is null) Begin -- Insert the course Insert into Courses values(@CourseName) -- Get the Id of the course Select @CourseId = SCOPE_IDENTITY() End -- Insert StudentId & CourseId in StudentCourses table Insert into StudentCourses values(@StudentId, @CourseId) If required, we can very easily convert this into a stored procedure as shown below. Create procedure spInsertIntoStudentCourses @StudentName nvarchar(50), @CourseName nvarchar(50) as Begin Declare @StudentId int Declare @CourseId int Select @StudentId = Id from Students where StudentName = @StudentName Select @CourseId = Id from Courses where CourseName = @CourseName If (@StudentId is null) Begin Insert into Students values(@StudentName) Select @StudentId = SCOPE_IDENTITY() End If (@CourseId is null) Begin Insert into Courses values(@CourseName) Select @CourseId = SCOPE_IDENTITY() End Insert into StudentCourses values(@StudentId, @CourseId) End Use the following statement to execute the stored procedure Execute spInsertIntoStudentCourses 'Tom','C#'
Views: 97284 kudvenkat
How to load text content into oracle table CLOB column? http://easy-learning-tech.blogspot.in/2018/04/loading-clob-data-into-oracle-table.html
Views: 1955 Siva Academy
Facebook - https://www.facebook.com/TheNewBoston-464114846956315/ GitHub - https://github.com/buckyroberts Google+ - https://plus.google.com/+BuckyRoberts LinkedIn - https://www.linkedin.com/in/buckyroberts reddit - https://www.reddit.com/r/thenewboston/ Support - https://www.patreon.com/thenewboston thenewboston - https://thenewboston.com/ Twitter - https://twitter.com/bucky_roberts
Views: 113513 thenewboston
Database Tutorial 64 - SQL INSERT Statement - Oracle DBA tutorial, Oracle Database Tutorial This video explains about SQL INSERT Statement
Views: 767 Sam Dhanasekaran
How To Insert Remove And Edit JTable Row Using text fields In Java NetBeans Source Code:http://1bestcsharp.blogspot.com/2015/05/java-jtable-add-delete-update-row.html ------------------ Check out my Java Projects! -------------------- ▶ Inventory Management System - http://bit.ly/Java_Inventory ▶ Students Information System - http://bit.ly/JavaStudent_System ▶ Contacts Management System - http://bit.ly/Java_Contacts ▶ All My Programming Projects Here - http://bit.ly/2HrU8hK ▶ My Source Code Store Here - http://bit.ly/2OsC0TU ----------------------------------- JAVA PRODUCTS --------------------------------------- Java Projects Bundle - http://bit.ly/JavaProjectsBundle Java Programming [Course] (affiliate) - http://bit.ly/JavaProgrammingCourse Projects in Enterprise Java [Course] (affiliate) - http://bit.ly/ProjectsInEnterpriseJava -------------------------- JAVA COURSE ----------------------------- ▶ master Java core development step-by-step - http://bit.ly/2HXSuAn -------------------------------------------------------------------- visit our blog https://1bestcsharp.blogspot.com/ facebook: https://www.facebook.com/1BestCsharp twitter: https://www.twitter.com/1BestCsharp_ subscribe: http://goo.gl/nRjPKk *************************************************************************** *************************************************************************** programming projects with source code: http://1bestcsharp.blogspot.com/p/programming-projects.html C# And Java Programming Books http://1bestcsharp.blogspot.com/2015/04/c-and-java-programming-books.html *************************************************************************** *************************************************************************** In this Java Swing Tutorial we will see How To : - add a Row To JTable From JTextFields . - delete Selected Row From table . - Get Selected Row Values From table to Text fields . - Update a JTable Row Using Text Fields . In Java NetBeans JAVA - How To Insert Update Delete Data In MySQL Database https://www.youtube.com/watch?v=uKEgKETRCzE JAVA - MySQL Database Navigation Buttons [First - Next - Previous - Last] https://www.youtube.com/watch?v=WkPWPuGHTTI and see also: http://1bestcsharp.blogspot.com/2015/01/java-mysql-how-to-bind-jtable-from-mysql-database-in-netbeans.html http://1bestcsharp.blogspot.com/2015/04/java-how-to-use-arraylist-in-java-netbeans.html http://1bestcsharp.blogspot.com/2015/05/java-linkedlist-mysql-database.html Display Image From JTable To JLabel In Java https://www.youtube.com/watch?v=nHCCubgd74s. Java - How To Create Login Form With MySQL Database [with source code] Part 1 : https://www.youtube.com/watch?v=7sNYhlBz9xo Part 2 : https://www.youtube.com/watch?v=meGhTnlS9k4 replay this video: http://youtu.be/22MBsRYuM4Q
Views: 150974 1BestCsharp blog
This question comes up about as frequently as the ‘how do I import data to Oracle Database’ question. It’s pretty simple once you’ve ran through the process a few times. But you may be here because you’ve never ran through the process before.
Views: 22762 Tayyib Oladoja
How to load new data into your Oracle database by using the SQL INSERT statement. For more Oracle tutorials go to http://www.asktheoracle.net
Views: 3084 asktheoracle1
SQL Tutorial 32 How To Insert Data into a Table Using SQL Developer and How to delete Data/Row From a table. Website : http://www.RebellionRider.com New Series of #SQL tutorial on How to Insert Data. I'll cover all the traditional way along with some tips and tricks on Data insertion. Keep watching and enjoy #SQLing Copy Cloud referral link || Use this link to join copy cloud and get 20GB of free storage https://copy.com?r=j7eYO7 Amazon Wishlist: http://bit.ly/wishlist-amazon Contacts E-Mail [email protected] Twitter https://twitter.com/rebellionrider Instagram http://instagram.com/rebellionrider Facebook. https://www.facebook.com/imthebhardwaj Linkedin. http://in.linkedin.com/in/mannbhardwaj/ Thanks for liking, commenting, sharing and watching more of our videos This is Manish from www.RebellionRider.com
Views: 53937 Manish Sharma
In this article i will show you, how to use preparedStatement in AWT java. I mean to say how to insert item into database at run time. The Following list describe: --How to insert item into database table. --How to use ExecuteUpdate( ) method. --How to use SetInt() method --How to use SetString ( ) method
Views: 32209 java code
RebellionRider presents PL/SQL tutorial 51 on how to create a Nested table in Oracle Database by Manish Sharma ------------------------------------------------------------------------ ►►►LINKS◄◄◄ Blog: http://bit.ly/nested-table-1 Previous Tutorial ► For Loop: https://youtu.be/DfAmnj2j7WI ------------------------------------------------------------------------- ►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/ You can also Email me at 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: 28118 Manish Sharma
In this video You will learn how to Add new column after creating a new table or existing tables in oracle database , This video help us adding one or more than columns as per project requirement. add a column add a column in a table add a column in sql add a column in table add a column sql add a column to a table add a column to an existing table add a column to sql table add a column to table add a new column add column add column alter table add column in a table add column in a table oracle add column in existing table add column in oracle add column in sql add column in table add column in table oracle add column in table sql add column into table add column ms sql add column oracle add column oracle sql add column oracle table add column pl sql add column sql add column sql oracle add column sql script add column sql server add column sql server 2008 add column sql server 2012 add column table add column table oracle add column to a table add column to a table sql add column to database add column to existing table add column to existing table sql server add column to oracle table add column to sql add column to sql server table add column to sql table add column to table add column to table oracle add column to table sql add column to table sql server add column to table sql server 2008 add column tsql add field sql add field sql server add field to table sql add new column add new column in existing table add new column in oracle database tables add new column in table sql add new column sql add new column to sql table add new column to table add new column to table oracle add new column to table sql add sql column add table column add to table sql alter a table sql alter table alter column sql alter table change column sql alter table column sql alter table command sql table add column sql table alter sql update table add column sql update table column sqlplus alter table table add column table alter table columns add update add column update column oracle update table add column update table add column oracle update table add column sql
Views: 2857 Programming Lifestyle
Views: 80238 1BestCsharp blog
Follow this step by step easy tutorial to learn how to insert data into the tables in SQL Server Database via queries. Don't forget to check out our site http://howtech.tv/ for more free how-to videos! http://youtube.com/ithowtovids - our feed http://www.facebook.com/howtechtv - join us on facebook https://plus.google.com/103440382717658277879 - our group in Google+ The data inside the database is held by the tables. The data can be inserted in these tables either by the queries or even with a straightaway Graphical method. In this tutorial we will see both the methods. Step 1 -- Locating the Appropriate Database First of all, we need to locate and expand the database where that particular table is present. After that, expand the table's directory. Then we will insert the data in the Inventory table. If we move into the column section, it can be seen that there are four fields which have to be added, namely the ID, the Product Name, the Quantity and the Price. Step 2 -- Writing query for inserting record Now to insert in table, SQL query would be: Insert into Inventory (id,Product,quantity,price) values (1,'abc',12,255.32); Make sure that each value is separated by a comma. Once done, simply press F5 to execute the query. At the bottom, in the messages section, a message will appear about table rows that have been affected. Step 3 -- Another Method of Insertion We can also insert data in a table by simply giving the values straight away. For that just write the following query: Insert into Inventory values (1,'ab2',30,300.36); Make sure that the values in query in SQL inserted into table are in the same order as the order of columns in the table. Now let's execute this query and in the messages section, you can see the rows that have been affected. To insert in table, SQL queries are required to be written with much care as error can arise if we just miss to insert ellipsis even. Step 4 -- Viewing Table Data Now let's check the table to see if the data has been inserted correctly. For that let us fetch all records from the inventory table and for that, write: Select * from inventory When we execute the query, you can see all the records in the results section below, and they are exactly the same as we mentioned in the query in earlier steps. Step 5 --Alternate Method of inserting data To insert in table, SQL provides another way through which we don't have to write SQL insert into table queries. For that, just right click on the inventory table and choose the 'Edit top 200 rows' option. Step 6 -- Inserting data in Fields Over here, we can start inserting the data in the table straight away, without using the queries. All we have to do is type the records in the fields and press enter to save the changes made in each field. And that is how data is inserted in tables in SQL using insert keyword.
Oracle SQL PLSQL and Unix Shell Scripting
Views: 1869 Sridhar Raghavan
This video is the first tutorial on Oracle SQL*Loader utility. This video gives the introduction and helps in understanding the concept behind Oracle SQL Loader. Why it should be used and the advantages of using it. SQL Loader is a bulk loader utility used for moving data from external files into the Oracle database tables. In this video we look at the overview of Oracle SQL Loader, we look at the complete flow of the process. It's basically a Conceptual introduction to the SQL Loader utility. What you will learn in this video 1. What is SQL Loader? 2. You will get an understanding on the Components of SQL Loader like control file, Log file, Discard File and Bad file. 3. Complete flow of the process. Visit the other videos on the same : Second video visit https://youtu.be/ogidUWHHRL8 Third video visit https://youtu.be/yD_CL_cf8tQ Check out the advantages of using TRUNCATE over a DELETE from the following video: Delete VS Truncate : https://youtu.be/u76wMm2byXo #KishanMashru #Oracle #SqlLoader #SqlLoaderConcept #SqlLoaderIntroduction #SQLandPLSQL #OracleSqlLoader #ETL #database
Views: 1316 Kishan Mashru
One of SQL Developer’s most popular features has undergone a significant upgrade. Users can quickly define and recall delimited or Excel files to be imported to a new or existing Oracle table. Data preview and validation is provided for each column, as well as ‘best guess’ data type and date format mask mapping. This process can now be automated via the SQL Developer command line interface (SDCLI) ‘Import’ command. NOTE: This is a video only. There is no audio. 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: 76949 Oracle Learning Library
How to get Oracle SQL Developer to automatically format your query results to CSV, HTML, JSON, Insert statements, and more.
Views: 49444 Jeff Smith
Improve load performance with Bulk Load in Talend. Difference between Bulk and simple load. ETL Performance Optimization tips. For details visit: http://www.vikramtakkar.com/2013/07/improve-load-performance-with-bulk-load.html
Views: 15863 Vikram Takkar
How to quickly load data from a spreadsheet or delimited file to a new or existing table in Oracle SQL Developer. Also briefly cover using the same interface for setting up SQL*Loader runs or External (staging) Tables.
Views: 11731 Oracle Database Development Tools
INSERT DATA IN RUNTIME BY ORACLE INTERFACE IN ORACLE 10G. #sqltutorial#oracletutorial#databasetutorial
Views: 738 Viral Fun Tube
PL/SQL Tutorial 1 (Oracle): Importing data from an Excel Spreadsheet In this tutorial I show you how to import data from excel into a table in Oracle PL/SQL Developer. Source Code: https://github.com/mitchtabian/SQL-tutorials Subscribe to my Blog and YouTube channel to get notifications when new FREE coding tutorials are posted! Blog: http://www.codingwithmitch.com/
Views: 13920 CodingWithMitch
In this video we will discuss, using dynamic sql in a stored procedure and it's implications from sql injection perspective. We will discuss performance implications of using dynamic sql in a stored procedure in a later video. Text version of the video http://csharp-video-tutorials.blogspot.com/2017/04/dynamic-sql-in-stored-procedure.html Slides http://csharp-video-tutorials.blogspot.com/2017/04/dynamic-sql-in-stored-procedure_11.html All SQL Server Text Articles http://csharp-video-tutorials.blogspot.com/p/free-sql-server-video-tutorials-for.html All SQL Server Slides http://csharp-video-tutorials.blogspot.com/p/sql-server.html All SQL Server Tutorial Videos https://www.youtube.com/playlist?list=PL08903FB7ACA1C2FB All Dot Net and SQL Server Tutorials in English https://www.youtube.com/user/kudvenkat/playlists?view=1&sort=dd All Dot Net and SQL Server Tutorials in Arabic https://www.youtube.com/c/KudvenkatArabic/playlists Consider the following stored procedure "spSearchEmployees". We implemented this procedure in Part 139 of SQL Server tutorial. This stored procedure does not have any dynamic sql in it. It is all static sql and is immune to sql injection. Create Procedure spSearchEmployees @FirstName nvarchar(100) = NULL, @LastName nvarchar(100) = NULL, @Gender nvarchar(50) = NULL, @Salary int = NULL As Begin Select * from Employees where (FirstName = @FirstName OR @FirstName IS NULL) AND (LastName = @LastName OR @LastName IS NULL) AND (Gender = @Gender OR @Gender IS NULL) AND (Salary = @Salary OR @Salary IS NULL) End Go Whether you are creating your dynamic sql queries in a client application like ASP.NET web application or in a stored procedure, you should never ever concatenate user input values. Instead you should be using parameters. Notice in the following example, we are creating dynamic sql queries by concatenating parameter values, instead of using parameterized queries. This stored procedure is prone to SQL injection. Let's prove this by creating a "Search Page" that calls this procedure. Create Procedure spSearchEmployeesBadDynamicSQL @FirstName nvarchar(100) = NULL, @LastName nvarchar(100) = NULL, @Gender nvarchar(50) = NULL, @Salary int = NULL As Begin Declare @sql nvarchar(max) Set @sql = 'Select * from Employees where 1 = 1' if(@FirstName is not null) Set @sql = @sql + ' and FirstName=''' + @FirstName + '''' if(@LastName is not null) Set @sql = @sql + ' and LastName=''' + @LastName + '''' if(@Gender is not null) Set @sql = @sql + ' and Gender=''' + @Gender + '''' if(@Salary is not null) Set @sql = @sql + ' and Salary=''' + @Salary + '''' Execute sp_executesql @sql End Go Add a Web Page to the project that we have been working with in our previous video. Name it "DynamicSQLInStoredProcedure.aspx". Copy and paste the HTML and code available on my blog at the following link http://csharp-video-tutorials.blogspot.com/2017/04/dynamic-sql-in-stored-procedure.html At this point, run the application and type the following text in the "Firsname" text and click "Search" button. Notice "SalesDB" database is dropped. Our application is prone to SQL injection as we have implemented dynamic sql in our stored procedure by concatenating strings instead of using parameters. ' Drop database SalesDB -- In the following stored procedure we have implemented dynamic sql by using parameters, so this is not prone to sql injecttion. This is an example for good dynamic sql implementation. Create Procedure spSearchEmployeesGoodDynamicSQL @FirstName nvarchar(100) = NULL, @LastName nvarchar(100) = NULL, @Gender nvarchar(50) = NULL, @Salary int = NULL As Begin Declare @sql nvarchar(max) Declare @sqlParams nvarchar(max) Set @sql = 'Select * from Employees where 1 = 1' if(@FirstName is not null) Set @sql = @sql + ' and [email protected]' if(@LastName is not null) Set @sql = @sql + ' and [email protected]' if(@Gender is not null) Set @sql = @sql + ' and [email protected]' if(@Salary is not null) Set @sql = @sql + ' and [email protected]' Execute sp_executesql @sql, N'@FN nvarchar(50), @LN nvarchar(50), @Gen nvarchar(50), @sal int', @[email protected], @[email protected], @[email protected], @[email protected] End Go On the code-behind page, use stored procedure spSearchEmployeesGoodDynamicSQL instead of spSearchEmployeesBadDynamicSQL. We do not have to change any other code. At this point run the application one more time and type the following text in the "Firstname" textbox and click the "Search" button. ' Drop database SalesDB -- Notice "SalesDB" database is not dropped, So in this case our application is not succeptible to SQL injection attack. Summary : Whether you are creating dynamic sql in a client application (like a web application) or in a stored procedure always use parameters instead of concatnating strings. Using parameters to create dynamic sql statements prevents sql injection.
Views: 38330 kudvenkat
For Complete Database Training Details Visit: http://www.qaonlinetraining.com http://infotek-solutions.com/ Delivery Method: Instructor led classroom and Online Training supported by world class Learning management system which automate all flow of lectures, videos, assignments, forums, quizzes and interview process. Class Schedule: Week-ends and Weekdays Contact Us: 571-437-0652, Mail Us: [email protected] Training Locations at : Ashburn / Fairfax / Maryland Office Address: 12801 Worldgate Dr #500, Herndon, VA 20170 Overview of Oracle DBA Training Oracle as a flexible, complex & robust RDBMS The evolution of hardware and the relation to Oracle Different DBA job roles (VP of DBA, developer DBA, production DBA, database babysitter) The changing job role of the Oracle DBA Environment management (network, CPU, disk and RAM) Instance management (managing SGA regions) Oracle table and index management Instance Architecture Instance vs. database Components of an instance Creating the OFA file structure ($DBA, bdump, udump, pfile) Oracle Instance Internals SGA vs. PGA Background processes Interfaces with server and disk I/O subsystem Using SQL*Plus for DBA management Connecting and executing SQL Using the “as sysdba” syntax Overview of SQL*Plus DBA commands (startup, etc.) Control file, UNDO and REDO management Explaining the use of control files Listing the Contents of the control File File locations for control Files Obtaining Control File Information Listing control file contents Displaying and Creating Undo segments Altering Undo Segments Determining the Number and Size of Undo segments Understanding flashback technology Troubleshooting Undo – snapshot too old Redo log concepts for recovery Online redo log (log_buffer) online redo logs and archived redo logs Oracle ARCH and LGWR background processes Redo log dictionary queries Redo log switch frequency and performance Multiplexing the Online Redo Log Files Archiving the Oracle Redo Logs Recovery using the redo log files User and privilege management The three security methods (VPD, Grant security/role-based security, grant execute) Creating New Database Users Using pre-spawned Oracle connections Auditing User activity Identifying System and Object Privileges Granting and Revoking Privileges Creating and Modifying Roles Displaying user security Information from the Data Dictionary Overview of instance management Parameter files (init.ora, listener.ora, tnsnames.ora) Rules for sizing SGA components Automated Oracle memory management (AMM) Initialization file management Creating the init.ora file Using spfile Displaying init.ora values with v$parameter Oracle*Net configuration Creating the listener.ora file Creating the tnsnames.ora file Data buffer configuration & sizing Inside the Oracle data buffers Using the KEEP pool Monitoring buffer effectiveness Using multiple blocksizes (multiple buffer pools) Shared pool and PGA configuration & Sizing Shared pool concepts and components Understanding the library cache Relieving shared pool contention Overview of PGA for sorting and hash joins Using sort_area_size, hash_area_size and pga_aggregate_target Troubleshooting network connectivity Verifying network connectivity with ping and tnsping Testing database links Oracle tables, views and materialized views Types of Oracle tables (regular, IOT, sorted hash clusters, nested tables) Oracle Views Oracle materialized views Oracle indexes Types of Oracle indexes (b-tree, bitmap, bitmap join index) Creating B*-Tree, bitmap and function-based Indexes Function-based indexes Finding indexing opportunities Index maintenance Oracle constraints Costs & benefits of constraints Types of Oracle indexes constraints (check, not null, unique, PK, FK) Cascading constraints Schema, File & tablespace management Describing the relationship between data files, tablespaces and table Understanding Oracle segments Creating Tablespaces – using the autoextend option Changing the Size of Tablespaces – alter database datafile command Defining a TEMP tablespace Changing the default storage Settings for a tablespace Review of the storage parameters in DBA views (ASM, ASSM, pctfree, pctused and freelists). Monitoring Chained rows (fetch continued rows) Monitoring Insert and Update performance (pctused, APPEND) Database Maintenance Reason for reorgs – chained rows, imbalanced freelists Reorganizing Tables using Export and Import Using CTAS to reorganize data Index rebuilding Backup & Recovery overview (hot & cold Backups, RMAN, block change tracking) Oracle DBA Utilities Data pump (Imp and exp utilities) SQL*Loader LogMiner Flashback DataGuard Oracle DBA utilities – Oracle dbms packages (dbms_redefinition)
Views: 146 Software Testing Training
This tutorials will help you to export column names from an Oracle table to excel sheet... It is one of the real time issue where you can save lot of time when working on the columns
Views: 1130 Tutorials for beginners
The ninth part of a mini-series of videos showing the basics of SQL. In this episode we take a look at some of the variations on the UPDATE statement. For more information see: https://oracle-base.com/articles/misc/sql-for-beginners-the-update-statement Website: https://oracle-base.com Blog: https://oracle-base.com/blog Twitter: https://twitter.com/oraclebase Cameo by Frits Hoogland : Blog: https://fritshoogland.wordpress.com/ Twitter: https://twitter.com/fritshoogland Cameo appearances are for fun, not an endorsement of the content of this video.
Views: 757 ORACLE-BASE.com
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Views: 125988 ProgrammingKnowledge
Learn more about connecting to databases with R: https://www.datacamp.com/courses/importing-data-in-r-part-2 Welcome to part two of importing data in R! The previous course dealt with accessing data stored in flat files or excel files. In a professional setting, you'll also encounter data stored in relational databases. In this video, I'll briefly talk about what a relational database is and then I'll explain how you can connect to it. In the next video, I'll explain how you can import data from it! So, what's a relational database? There's no better way to show this than with an example. Take this database, called company. It contains three tables, employees, products and sales. Like a flat file, information is displayed in a table format. The employees table has 5 records and three fields, namely id, name and started_at. The id here serves as a unique key for each row or record. Next, the products table contains the details on four products. We're dealing with data from a telecom company that's selling both with and without a contract. Also here, each product has an identifier. Finally, there's the sales table. It lists what products were sold by who, when and for what price. Notice here that the ids in employee_id and product_id correspond to the ids that you can find in the employees and products table respectively. The third sale for example, was done by the employee with id 6, so Julie. She sold the product with id 9, so the Biz Unlimited contract. These relations make this database very powerful. You only store all necessary information once in nicely separated tables, but can connect the dots between different records to model what's happening. How the data in a relational database is stored and shuffled around when you make adaptations, depends on the so-called database management system, or DBMS you're using. Open-source implementations such as MySQL, postgreSQL and SQLite are very popular, but there are also proprietary implementations such as Oracle Database and Microsoft SQL server. Practically all of these implementations use SQL, or sequel, as the language for querying and maintaining the database. SQL stands for Structured Query Language. Depending on the type of database you want to connect to, you'll have to use different packages. Suppose the company database I introduced before is a MySQL database. This means you'll need the RMySQL package. For postgreSQL you'll need RpostgreSQL, for Oracle, you'll use ROracle and so on. How you interact with the database, so which R functions you use to access and manipulate the database, is specified in another R package called DBI. In more technical terms, DBI is an interface, and RMySQL is the implementation. Let's install the RMySQL package, which automatically installs the DBI package as well. Loading only the DBI package will be enough to get started. The first step is creating a connection to the remote MySQL database. You do this with dbConnect(), as follows. The first argument specifies the driver that you will use to connect to the MySQL database. It sure looks a bit strange, but the MySQL() function from the RMySQL package simply constructs a driver for us that dbConnect can use. Next, you have to specify the database name, where the database is hosted, through which port you want to connect, and finally the credentials to authenticate yourself. This is an actual database that we're hosting, so you can try these commands yourself! The result of the dbConnect call, con, is a DBI connection object. You'll need to pass this object to whatever function you're using to interact with the database. Before we do that, let's get familiar with this connection object in the exercises!
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Generate JSON file from relational Database such as SQL Server, MySQL, Oracle in few clicks. For more info: http://zappysys.com/products/ssis-powerpack/ssis-export-json-file-task/ ◾Export multiple tables/views to JSON files (e.g. Sales% or do SalesJan|SalesFeb) ◾Export SQL query output to JSON file ◾Inbuilt Layout Editor for creating complex JSON with nested structure (Document Array, Value Array, Nested attributes ◾Automatically Split exported JSON data into multiple files by Size or Number of records ◾Automatically Split exported JSON data into multiple files by Split By Column (e.g. SplitBy=Country will create new file for each country) ◾Support for Compression and Append ◾Create Multi content JSON documents ◾Support for SQL Server 2005, 2008, 2012, 2014, 2016 (32 bit and 64 bit)
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