Oracle 10g Dba Interview Questions And Answers Pdf


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25.05.2021 at 08:01
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oracle 10g dba interview questions and answers pdf

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Top 50 Oracle Interview Questions You Should Master in 2021

Searching for a new job can be more difficult know a day even searching itself might become a big job for you. So, to clear all your confusions on interview locations, interview questions we have given detail on our Wisdomjobs site. For more details on Oracle 10g job Interview Questions and Answers and Oracle 10g job s visit our site. Question 1. What Is Oracle 10g? Answer : Oracle 10g is a version of the Oracle Database. The g stands for "grid" to indicate that 10g is "grid-computing ready".

Question 2. Answer : The union operation, you will recall, brings two sets of data together. To perform this feat of magic, a SORT operation is done on both tables. This is obviously computationally intensive, and uses significant memory as well. Question 3. Answer : You can script the process to include it in a set of install scripts you deliver with a product. You can put your create database script in CVS for version control, so as you make changes or adjustments to it, you can track them like you do changes to software code.

You can log the output and review it for errors. You learn more about the process of database creation, such as what options are available and why.

Question 4. Answer : A trigger is one or more statements of SQL that are being executed in event of data modification in a table to which the trigger belongs.

Question 5. Question 6. Question 7. Answer : A stored procedure is pre-loaded in memory for faster execution. It allows the DBMS control of permissions for security purposes. It also eliminates the need to recompile components when minor changes occur to the database.

Question 8. What Is A Cartesian Product? What Causes It? Answer : A Cartesian product is the result of an unrestricted join of two or more tables. It is causes by specifying a table in the FROM clause without joining it to another table. Question 9. Question Answer : 1 for positive value, 0 for Zero, -1 for Negative value. Explicit Cursor Attributes. Answer : There are four cursor attributes used in Oracle. Output: 1 Scott 2 Millor 3 Jiyo 4 Smith. Switch To Dos Prompt.

To See Current User Name. Answer : If changes are made to the tables and these tables are the base tables of a view, then the changes will be reference on the view. If Yes - Under What Conditions? Answer : - To protect some of the columns of a table from other users. Answer : CYCLE specifies that the sequence continue to generate values after reaching either maximum or minimum value. After pan-ascending sequence reaches its maximum value, it generates its minimum value.

After a descending sequence reaches its minimum, it generates its maximum. It is not possible. Only if you access next value in the session, current value can be accessed. What Is A Database Link? Answer : Database link is a named path through which a remote database can be accessed.

Answer : - To modify the datatype of a column the column must be empty. Answer : CHAR pads blank spaces to the maximum length. What Is On Delete Cascade? It enables rolling back part of a transaction. Maximum of five save points are allowed. What Is Referential Integrity Constraint? Answer : Maintaining data integrity through a set of rules that restrict the values of one or more columns of the tables based on the values of primary key or unique key of the referenced table.

What Is An Integrity Constraint? Answer : Integrity constraint is a rule that restricts values to a column in a table. MINUS - returns all distinct rows selected by the first query but not by the second. Difference Between Substr And Instr? The search begins from nth position of string1.

Explain Connect By Prior? What Is Correlated Sub-query? Answer : Correlated sub-query is a sub-query, which has reference to the main query. What Is The Sub-query? Answer : Sub-query is a query whose return values are used in filtering conditions of the main query. What Is A Join? Answer : Join is a query, which retrieves related columns or rows from multiple tables.

Non-Equi Join — Joining two tables by equating two common columns. Outer Join — Joining two tables in such a way that query can also retrieve rows that do not have corresponding join value in the other table. Deleted records can be rolled back or committed. What Is A Transaction? Answer : Transaction is logical unit between two commits and commit and rollback. Instead grant the ability to access the procedures that access the tables. When procedure executed it will execute the privilege of procedures owner.

Users cannot access tables except via the procedure. Answer : A user account is not a physical structure in database but it is having important relationship to the objects in the database and will be having certain privileges. Answer : - The space used transaction entries and deleted records, does not become free immediately after completion due to delayed cleanout. Answer : When Segment is dropped. What Is Hit Ratio?

Answer : It is a measure of well the data cache buffer is handling requests for data. Answer : It is the set of before image data blocks that contain rows that are modified by a transaction. Each rollback segment entry must be completed within one rollback segment.

A single rollback segment can have multiple rollback segment entries. Answer : They allow the database to maintain read consistency between multiple transactions. Answer : Shadow set of disks save as a backup in the event of disk failure. In most operating systems if any disk failure occurs it automatically switchover to place of failed disk.

How Can Be Achieved? Answer : Process of having a copy of redo log files is called mirroring. This can be achieved by creating group of log files together, so that LGWR will automatically writes them to all the members of the current on-line redo log group.

If any one group fails then database automatically switch over to next group. It degrades performance. Answer : Shutdown the database Copy one of the existing controlfile to new location Edit Config ora file by adding new control filename Restart the database.

What Is A Control File? It will be used to maintain internal consistency and guide recovery operations. Multiple copies of control files are advisable. Disk corruption will be very less. Answer : Limit the number of extents in the table Separate table from its indexes. Allocate sufficient temporary storage. Why Query Fails Sometimes? Answer : Rollback segment dynamically extent to handle larger transactions entry loads.

Oracle Interview Questions and Answers Pdf

IntegrityConstraints Itcanbecalledasadeclarativewayinordertodefinea businessruleforatable'scolumn. Itcanbecalledasanoptionalstructurewhichisassociated withatablefordirectaccesstotherows Indexcanbecreatedforoneormorecolumnsinatable. Itcanbedefinedasaspecificnumberofcontiguousdata blocksinsingleallocation. ANALYZEcommandisusedtoperformvariousfunctionson index,table,orcluster,aslistedbelow: Ithelpsindentifyingmigratedandchainedrowsofthetableor cluster. Ithelpsincollectingthestatisticsaboutobjectusedbythe optimizer. Ithelpsindeletingstatisticsusedbyobjectfromthedata dictionary. Oracleform Oraclesecurity Oraclesystemprivilege Oracleobjectprivileges Oracletableprivileges.

Answer: Oracle Database is a relational database management system RDBMS which is used to store and retrieve the large amounts of data. Oracle Database had physical and logical structures. Logical structures and physical structures are separated from each other. Answer :Oracle database is the collection of datafiles,redologs and control files while Oracle instance is the SGA ,processes in the Memory. We can have 1 or more instance serving a oracle database. In Oracle RAC , we have one set of datafiles,control file and redo logs while instance on one ore more boxes accesses the same database. Question 3 What is a Tablespace?

Searching for a new job can be more difficult know a day even searching itself might become a big job for you. So, to clear all your confusions on interview locations, interview questions we have given detail on our Wisdomjobs site. For more details on Oracle 10g job Interview Questions and Answers and Oracle 10g job s visit our site. Question 1. What Is Oracle 10g? Answer : Oracle 10g is a version of the Oracle Database. The g stands for "grid" to indicate that 10g is "grid-computing ready".


Question 10 What is data blocks? Answer:Data Blocks are the base unit of logical database space. Each data block represents a specific number of bytes of​.


Oracle 10g Interview Questions & Answers

There are a lot of opportunities from many reputed companies in the world. According to research, Oracle DBA has a market share of about 0. This course will help you to achieve excellence in this domain. Oracle automatically maintains and uses indexes and when any change is made in the table data Oracle automatically distributes it into relevant indexes.

There is a parcel of chances from many presumed organizations on the planet. In this way, despite everything you have the chance to push forward in your vocation in Oracle DBA Development. By this Oracle DBA Interview Questions and answers, many students are got placed in many reputed companies with high package salary.

Oracle dba interview questions and answers

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Oracle Database Interview Questions are the frequently asked questions in the interview process for database related job roles. Oracle as a database service provider to the industry is the leading vendor for Transactional systems, Data warehouse, enterprise grid computing, and in house legacy applications. Oracle as a database supports the Relational database concepts and features for maintaining the data transactionality. The Interview questions for Oracle database are related to SQL queries, concepts on stored procedures, functions, triggers, cursors, views, tables. The interview questions are also related to the administration, configuration and user roles for the oracle database and schemas.

 Тебе больше нечем заняться? - Сьюзан метнула на него недовольный взгляд. - Хочешь от меня избавиться? - надулся Хейл. - Если честно - да, - Не надо так, Сью, Ты меня оскорбляешь. Глаза Сьюзан сузились. Она терпеть не могла, когда он называл ее Сью. Вообще-то она ничего не имела против этого имени, но Хейл был единственным, кто его использовал, и это было ей неприятно. - Почему бы мне не помочь тебе? - предложил Хейл.

Мне было нужно… Но тигрица уже изготовилась к прыжку. - В вашем распоряжении двадцать тысяч сотрудников. С какой стати вы решили послать туда моего будущего мужа. - Мне был нужен человек, никак не связанный с государственной службой. Если бы я действовал по обычным каналам и кто-то узнал… - И Дэвид Беккер единственный, кто не связан с государственной службой. - Разумеется, не единственный.

Это было его любимое изречение. ГЛАВА 32 Дэвид Беккер остановился в коридоре у номера 301. Он знал, что где-то за этой витиеватой резной дверью находится кольцо.

Фонтейн стоял, тяжело дыша. - У нас нет причин ему не верить.  - Это прозвучало как сигнал к окончанию разговора.

 - Он протянул конверт Беккеру, и тот прочитал надпись, сделанную синими чернилами: Сдачу возьмите. Беккер открыл конверт и увидел толстую пачку красноватых банкнот. - Что. - Местная валюта, - безучастно сказал пилот.

Ни для кого не было секретом, что Мидж Милкен недолюбливала Тревора Стратмора. Стратмор придумал хитроумный ход, чтобы приспособить Попрыгунчика к нуждам агентства, но его схватили за руку. Несмотря ни на что, АН Б это стоило больших денег.

5 Comments

Isobel F.
26.05.2021 at 01:20 - Reply

Oracle DBA Questions and Answers Pdf. This interview section questions contains a brief introduction to the Orcle DBA. It is intended as a tutorial on the Oracle.

Tradhypjunkno
27.05.2021 at 18:10 - Reply

There are 10 identical servers and you want to install Oracle Database on each of them. What would you use to automate the installation process? Ans. If you are​.

IonatГЎn D.
28.05.2021 at 00:31 - Reply

This list includes characteristics of the Oracle database, roles of a Database Administrator, tools used for administering the Oracle database, comparing a cluster with a grid, the architecture of Oracle Grid Computing, and more.

Dielle G.
31.05.2021 at 04:58 - Reply

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Troy M.
01.06.2021 at 12:55 - Reply

To be precise about the Oracle 10g, 10g is Oracle's network calculating product group counting (among other things) a database management system (DBMS) and.

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