This section includes 7 InterviewSolutions, each offering curated multiple-choice questions to sharpen your Current Affairs knowledge and support exam preparation. Choose a topic below to get started.
| 1. |
How Can You Enable Automatic Archiving? |
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Answer» SHUT the DATABASE BACKUP the database Modify/Include LOG_ARCHIVE_START_TRUE in init.ora FILE. START up the database. Shut the database Backup the database Modify/Include LOG_ARCHIVE_START_TRUE in init.ora file. Start up the database. |
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| 2. |
What Are The Database Administrators Utilities Available? |
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Answer» SQL * DBA – This allows DBA to monitor and control an ORACLE database. SQL * DBA – This allows DBA to monitor and control an ORACLE database. |
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| 3. |
What Is Statement Auditing? |
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Answer» Statement AUDITING is the auditing of the POWERFUL system PRIVILEGES WITHOUT regard to specifically named OBJECTS Statement auditing is the auditing of the powerful system privileges without regard to specifically named objects |
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| 4. |
What Are The Different Levels Of Auditing? |
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| 5. |
What Is Tablespace Quota? |
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Answer» The collective AMOUNT of DISK space available to the OBJECTS in a schema on a particular TABLESPACE. The collective amount of disk space available to the objects in a schema on a particular tablespace. |
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| 6. |
What Are The System Resources That Can Be Controlled Through Profile? |
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Answer» The number of CONCURRENT sessions the user can establish the CPU processing time available to the user’s SESSION the CPU processing time available to a SINGLE call to ORACLE made by a SQL statement the amount of logical I/O available to the user’s session the amount of logical I/O available to a single call to ORACLE made by a SQL statement the allowed amount of idle time for the user’s session the allowed amount of CONNECT time for the user’s session. The number of concurrent sessions the user can establish the CPU processing time available to the user’s session the CPU processing time available to a single call to ORACLE made by a SQL statement the amount of logical I/O available to the user’s session the amount of logical I/O available to a single call to ORACLE made by a SQL statement the allowed amount of idle time for the user’s session the allowed amount of connect time for the user’s session. |
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| 7. |
What Is Default Tablespace? |
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Answer» The TABLESPACE to contain SCHEMA OBJECTS created without specifying a tablespace NAME. The Tablespace to contain schema objects created without specifying a tablespace name. |
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| 8. |
What Is The Use Of Analyze Command? |
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Answer» –To perform one of these function on an INDEX, table, or cluster –To perform one of these function on an index, table, or cluster |
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| 9. |
What Is A Database Instance? |
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Answer» A database INSTANCE (Server) is a set of memory structure and background PROCESSES that ACCESS a set of database files. The process can be shared by all USERS. The memory structure that are used to store most queried data from database. This helps up to improve database performance by decreasing the amount of I/O performed against data file. A database instance (Server) is a set of memory structure and background processes that access a set of database files. The process can be shared by all users. The memory structure that are used to store most queried data from database. This helps up to improve database performance by decreasing the amount of I/O performed against data file. |
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| 10. |
What Is An Index? How It Is Implemented In Oracle Database? |
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Answer» An index is a DATABASE structure used by the server to have direct access of a row in a table. An index is AUTOMATICALLY created when a unique of PRIMARY key constraint CLAUSE is specified in create table command (Ver 7.0) An index is a database structure used by the server to have direct access of a row in a table. An index is automatically created when a unique of primary key constraint clause is specified in create table command (Ver 7.0) |
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| 11. |
What Is Database Clusters? |
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Answer» Group of TABLES PHYSICALLY stored TOGETHER because they share common columns and are OFTEN used together is called CLUSTER. Group of tables physically stored together because they share common columns and are often used together is called Cluster. |
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| 12. |
What Are The Basic Element Of Base Configuration Of An Oracle Database? |
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Answer» It consists of one or more data files. one or more control files. two or more redo log files. The Database contains multiple users/schemas one or more rollback segments one or more tablespaces Data dictionary tables User OBJECTS (table, INDEXES, views etc.,) The SERVER that access the database consists of SGA (Database buffer, Dictionary Cache Buffers, Redo log buffers, Shared SQL pool) SMON (System MONito) PMON (Process MONitor) LGWR (LoG WRITE) DBWR (Data Base Write) ARCH (ARCHiver) CKPT (Check POINT) RECO Dispatcher User Process with associated PGS It consists of one or more data files. one or more control files. two or more redo log files. The Database contains multiple users/schemas one or more rollback segments one or more tablespaces Data dictionary tables User objects (table, indexes, views etc.,) The server that access the database consists of SGA (Database buffer, Dictionary Cache Buffers, Redo log buffers, Shared SQL pool) SMON (System MONito) PMON (Process MONitor) LGWR (LoG Write) DBWR (Data Base Write) ARCH (ARCHiver) CKPT (Check Point) RECO Dispatcher User Process with associated PGS |
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| 13. |
Explain What Partitioning Is And What Its Benefit Is? |
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Answer» PARTITIONING is a method of TAKING large tables and indexes and SPLITTING them into SMALLER, more manageable pieces. Partitioning is a method of taking large tables and indexes and splitting them into smaller, more manageable pieces. |
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| 14. |
Explain The Use Of Setting Global_names Equal To True? |
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Answer» SETTING GLOBAL_NAMES dictates how you might connect to a database. This variable is either TRUE or FALSE and if it is set to TRUE it ENFORCES database links to have the same name as the remote database to which they are LINKING. Setting GLOBAL_NAMES dictates how you might connect to a database. This variable is either TRUE or FALSE and if it is set to TRUE it enforces database links to have the same name as the remote database to which they are linking. |
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| 15. |
Explain The Difference Between Archivelog Mode And Noarchivelog Mode And The Benefits And Disadvantages To Each? |
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Answer» ARCHIVELOG mode is a mode that you can put the DATABASE in for creating a backup of all transactions that have occurred in the database so that you can recover to any POINT in time. NOARCHIVELOG mode is basically the absence of ARCHIVELOG mode and has the disadvantage of not being able to recover to any point in time. NOARCHIVELOG mode does have the advantage of not having to write transactions to an archive LOG and THUS increases the performance of the database slightly. ARCHIVELOG mode is a mode that you can put the database in for creating a backup of all transactions that have occurred in the database so that you can recover to any point in time. NOARCHIVELOG mode is basically the absence of ARCHIVELOG mode and has the disadvantage of not being able to recover to any point in time. NOARCHIVELOG mode does have the advantage of not having to write transactions to an archive log and thus increases the performance of the database slightly. |
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| 16. |
What Is Distributed Database? |
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Answer» A distributed database is a network of DATABASES managed by MULTIPLE database SERVERS that appears to a user as single logical database. The DATA of all databases in the distributed database can be simultaneously ACCESSED and modified. A distributed database is a network of databases managed by multiple database servers that appears to a user as single logical database. The data of all databases in the distributed database can be simultaneously accessed and modified. |
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| 17. |
What Is The Difference Between A Temporary Tablespace And A Permanent Tablespace? |
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Answer» A TEMPORARY tablespace is used for temporary objects such as SORT structures while permanent tablespaces are used to STORE those objects meant to be used as the true objects of the database. A temporary tablespace is used for temporary objects such as sort structures while permanent tablespaces are used to store those objects meant to be used as the true objects of the database. |
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| 18. |
What Does Coalescing A Tablespace Do? |
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Answer» COALESCING is only VALID for dictionary-managed tablespaces and de-fragments space by combining neighboring free extents into LARGE single extents. Coalescing is only valid for dictionary-managed tablespaces and de-fragments space by combining neighboring free extents into large single extents. |
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| 19. |
Describe What Redo Logs Are? |
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Answer» Redo LOGS are logical and physical structures that are designed to hold all the changes MADE to a DATABASE and are intended to aid in the recovery of a database. Redo logs are logical and physical structures that are designed to hold all the changes made to a database and are intended to aid in the recovery of a database. |
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| 20. |
What Does A Control File Contain? |
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Answer» A Control file records the PHYSICAL STRUCTURE of the database. It contains the following INFORMATION. Database Name Names and locations of a database’s files and redolog files. TIME stamp of database creation. A Control file records the physical structure of the database. It contains the following information. Database Name Names and locations of a database’s files and redolog files. Time stamp of database creation. |
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| 21. |
Explain Materialized Views And How They Are Used? |
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Answer» Materialized views are objects that are REDUCED SETS of information that have been summarized, grouped, or AGGREGATED from base tables. They are typically used in data warehouse or decision SUPPORT SYSTEMS. Materialized views are objects that are reduced sets of information that have been summarized, grouped, or aggregated from base tables. They are typically used in data warehouse or decision support systems. |
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| 22. |
Name Three Advisory Statistics You Can Collect? |
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| 23. |
Explain The Use Of Table Functions? |
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Answer» Table FUNCTIONS are designed to return a set of rows through PL/SQL LOGIC but are INTENDED to be used as a NORMAL table or view in a SQL statement. They are also used to pipeline information in an ETL PROCESS. Table functions are designed to return a set of rows through PL/SQL logic but are intended to be used as a normal table or view in a SQL statement. They are also used to pipeline information in an ETL process. |
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| 24. |
Explain The Difference Between A Function, Procedure And Package? |
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Answer» A FUNCTION and procedure are the same in that they are intended to be a collection of PL/SQL code that carries a SINGLE task. While a procedure does not have to return any VALUES to the CALLING application, a function will return a single value. A package on the other hand is a collection of functions and PROCEDURES that are grouped together based on their commonality to a business function or application. A function and procedure are the same in that they are intended to be a collection of PL/SQL code that carries a single task. While a procedure does not have to return any values to the calling application, a function will return a single value. A package on the other hand is a collection of functions and procedures that are grouped together based on their commonality to a business function or application. |
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| 25. |
Explain The Use Of Setting Global_names Equal To True.? |
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Answer» Setting GLOBAL_NAMES dictates how you might connect to a database. This variable is EITHER TRUE or FALSE and if it is set to TRUE it ENFORCES database LINKS to have the same name as the remote database to which they are linking. Setting GLOBAL_NAMES dictates how you might connect to a database. This variable is either TRUE or FALSE and if it is set to TRUE it enforces database links to have the same name as the remote database to which they are linking. |
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| 26. |
Explain The Difference Between $oracle_home And $oracle_base. |
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Answer» ORACLE_BASE is the ROOT directory for oracle. ORACLE_HOME located BENEATH ORACLE_BASE is where the oracle PRODUCTS RESIDE. ORACLE_BASE is the root directory for oracle. ORACLE_HOME located beneath ORACLE_BASE is where the oracle products reside. |
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| 27. |
A Table Is Classified As A Parent Table And You Want To Drop And Re-create It. How Would You Do This Without Affecting The Children Tables? |
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Answer» Disable the foreign key CONSTRAINT to the PARENT, DROP the table, re-create the table, ENABLE the foreign key constraint. Disable the foreign key constraint to the parent, drop the table, re-create the table, enable the foreign key constraint. |
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| 28. |
Give The Two Types Of Tables Involved In Producing A Star Schema And The Type Of Data They Hold. |
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Answer» Fact tables and dimension tables. A fact table CONTAINS MEASUREMENTS while dimension tables will CONTAIN DATA that will HELP describe the fact tables. Fact tables and dimension tables. A fact table contains measurements while dimension tables will contain data that will help describe the fact tables. |
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| 29. |
Compare And Contrast Truncate And Delete For A Table. ? |
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Answer» Both the truncate and delete command have the desired outcome of getting rid of all the ROWS in a table. The difference between the TWO is that the truncate command is a DDL operation and just moves the high water mark and produces a now rollback. The delete command, on the other hand, is a DML operation, which will produce a rollback and thus TAKE LONGER to complete. Both the truncate and delete command have the desired outcome of getting rid of all the rows in a table. The difference between the two is that the truncate command is a DDL operation and just moves the high water mark and produces a now rollback. The delete command, on the other hand, is a DML operation, which will produce a rollback and thus take longer to complete. |
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| 30. |
How Can You Enable A Trace For A Session? |
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Answer» USE the DBMS_SESSION.SET_SQL_TRACE or
Use the DBMS_SESSION.SET_SQL_TRACE or
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| 31. |
What Is The Difference Between The Sql*loader And Import Utilities? |
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Answer» These two Oracle utilities are used for loading data into the database. The difference is that the IMPORT utility RELIES on the data being PRODUCED by another Oracle utility EXPORT while the SQL*Loader utility allows data to be loaded that has been produced by other utilities from different data sources just so long as it conforms to ASCII formatted or delimited files. These two Oracle utilities are used for loading data into the database. The difference is that the import utility relies on the data being produced by another Oracle utility EXPORT while the SQL*Loader utility allows data to be loaded that has been produced by other utilities from different data sources just so long as it conforms to ASCII formatted or delimited files. |
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| 32. |
What Is A Snapshot Log? |
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Answer» A snapshot log is a table in the master database that is ASSOCIATED with the master table. ORACLE uses a snapshot log to TRACK the ROWS that have been updated in the master table. Snapshot logs are used in updating the snapshots BASED on the master table. A snapshot log is a table in the master database that is associated with the master table. ORACLE uses a snapshot log to track the rows that have been updated in the master table. Snapshot logs are used in updating the snapshots based on the master table. |
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| 33. |
What Are The Options Available To Refresh Snapshots? |
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Answer» COMPLETE – TABLES are COMPLETELY regenerated using the snapshots query and the master tables every time the snapshot referenced. COMPLETE – Tables are completely regenerated using the snapshots query and the master tables every time the snapshot referenced. |
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| 34. |
Is It Possible To Insert Comments Into Sql Statements Return In The Data Model Editor? |
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Answer» YES it is possible to insert COMMENTS into sql statements return in the DATA model editor Yes it is possible to insert comments into sql statements return in the data model editor |
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| 35. |
What Is The Use Of Image_zoom Built-in? |
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Answer» To MANIPULATE IMAGES in IMAGE ITEMS. To manipulate images in image items. |
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| 36. |
What Is The Purpose Of The Product Order Option In The Column Property Sheet? |
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Answer» To SPECIFY the order of INDIVIDUAL GROUP evaluation in a CROSS PRODUCTS. To specify the order of individual group evaluation in a cross products. |
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| 37. |
Explain About Horizontal, Vertical Tool Bar Canvas Views? |
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| 38. |
If Two Groups Are Not Linked In The Data Model Editor, What Is The Hierarchy Between Them? |
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Answer» TWO GROUP that is above are the left most rank HIGHER than the group that is to right or below it. Two group that is above are the left most rank higher than the group that is to right or below it. |
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| 39. |
How Do You Reference A Parameter Indirectly? |
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Answer» To indirectly REFERENCE a parameter USE the NAME IN, COPY ‘built-ins to indirectly SET and reference the parameters value’ EXAMPLE name_in (’capital parameter my param’), Copy (’XXXX’,’Parameter my_param’) To indirectly reference a parameter use the NAME IN, COPY ‘built-ins to indirectly set and reference the parameters value’ Example name_in (’capital parameter my param’), Copy (’XXXX’,’Parameter my_param’) |
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| 40. |
What Is The Maximum No Of Chars The Parameter Can Store? |
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Answer» The maximum no of CHARS the parameter can store is only VALID for char parameters, which can be up to 64K. No parameters default to 23 BYTES and DATE parameter default to 7 Bytes. The maximum no of chars the parameter can store is only valid for char parameters, which can be up to 64K. No parameters default to 23 Bytes and Date parameter default to 7 Bytes. |
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| 41. |
What Is A Dba? |
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Answer» A DBA is a Database Administrator, and this is the most common job that you find a database specialist doing. There are Development DBAs and Production DBAs. A DBA is a Database Administrator, and this is the most common job that you find a database specialist doing. There are Development DBAs and Production DBAs. |
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