This is a loaded question and almost begs for you to answer it with "What DBA activities do you LIKE to do on a daily basis?." And that is how I would answer this question. Again, do not get caught up in the "typical" day-to-day operational issues of... Read More

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. Read More

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. Read More

The user is assigned the SYSTEM tablespace as a default and temporary tablespace. This is bad because it causes user objects and temporary segments to be placed into the SYSTEM tablespace resulting in fragmentation and improper table placement (only... Read More

Fires during the execute query and count query processing after oracle forms constructs the select statement to be issued, but before the statement is actually issued. The pre-query trigger fires just before oracle forms issues the select statement... Read More

The index is created in the user?s default tablespace and all sizing information is lost. Oracle doesn?t store this information as a part of the constraint definition, but only as part of the index definition, when the constraint was disabled the... Read More

Fact tables and dimension tables. A fact table contains measurements while dimension tables will contain data that will help describe the fact tables. Read More

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.<br>A Development DBA usually works closely with a team of developers and gets more... Read More

Group of tables physically stored together because they share common columns and are often used together is called Cluster. Read More

Replication of data in distributed environment. - Using snapshots to replicate data. - Using remote procedure calls. Read More

Complete database recovery from disk failure is possible only in ARCHIVELOG mode. Online database backup is possible only in ARCHIVELOG mode. Read More

The Oracle system will use the default name of SYS_Cxxxx where xxxx is a system generated number. This is bad since it makes tracking which table the constraint belongs to or what the constraint does harder. Read More

Because in a where clause the condition is applied during data retrieval, then after retrieving the data. Read More

You can't use hot backup without being in archivelog mode. So no, you couldn't recover. Read More

Roles are named groups of related privileges that are granted to users or other roles. Read More

Two-phase commit is mechanism that guarantees a distributed transaction either commits on all involved nodes or rolls back on all involved nodes to maintain data consistency across the global distributed database. It has two phase, a Prepare Phase... Read More

A hidden column is used to when a column has to embed into boilerplate text. Read More

Fires when oracle forms first marks a record as an insert or an update. The trigger fires as soon as oracle forms determines through validation that the record should be processed by the next post or commit as an insert or update. Generally occurs... Read More

1)bfile - Up to 4 gigabytes ?> File locators that point to a read-only binary object outside of the database. 2)blob - Up to 4 gigabytes. ?> LOB locators that point to a large binary object within the database. 3)clob - Up to 4... Read More

When-image-activated fires when the operators double clicks on an image itemwhen-image-pressed fires when an operator clicks or double clicks on an image item. Read More

Use the ALTER TABLESPACE ..... SHRINK command. Read More

Coalescing is only valid for dictionary-managed tablespaces and de-fragments space by combining neighboring free extents into large single extents. Read More

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... Read More

REDUCED GRANTING OF PRIVILEGES - Rather than explicitly granting the same set of privileges to many users a database administrator can grant the privileges for a group of related users granted to a role and then grant only the role to each member of... Read More

Views do not contain or store data. Read More

Database on other servers can be updated and those transactions can be grouped together with others in a logical unit. Database uses a two phase commit. Read More

When_window_activated When_window_closed When_window_deactivated When_window_resized Within this triggers, you can examine the built in system variable system. event_window to determine the name of the window for which the trigger fired. Read More

When the value of a data parameter being passed to a called product is always the name of the record group defined in the current form. Data parameters are used to pass data to products invoked with the run_product built-in subprogram. Read More

When one form invokes another form by executing open_form the first form remains displayed, and operators can navigate between the forms as desired. when one form invokes another form by executing call_form, the called form is modal with respect to... Read More

Visual attributes are the font, color, pattern proprieties that you set for form and menu objects that appear in your application interface. Read More

Vbx control provide a simple method of building and enhancing user interfaces. The controls can use to obtain user inputs and display program outputs.vbx control where originally develop as extensions for the ms visual basic environments and... Read More

Exclusive Mode If the first instance that mounts a database does so in exclusive mode, only that Instance can mount the database. Parallel Mode If the first instance that mounts a database is started in parallel mode, other instances that are started... Read More

Using open_form built-in setting the session option Ex. Open_form (?Stocks ?,active,session). when invoke the multiple forms with open form and call_form in the same application, state whether the following are true/False. Read More

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 (?SURESH?,'Parameter my_param?) Read More

You take this as a trick question and explain it that way. Never in my database carrier have I distinguished between "development" and "production." Just ask your development staff or VP of engineering how much time and money is lost if development... Read More

Yes. We can create procedures to fetch more than a row. By using CURSOR commands we could able to do that. Ex: CREATE OR REPLACE PROCEDURE myprocedure IS CURSOR mycur IS select id from mytable; new_id mytable.id%type; BEGIN OPEN mycur; LOOP ... Read More

An object group is a container for a group of objects; you define an object group when you want to package related objects, so that you copy or reference them in other modules. Read More

An Ole server application creates ole Objects that are embedded or linked in ole Containers ex. Ole servers are ms_word & ms_excel. OLE containers provide a place to store, display and manipulate objects that are created by ole server... Read More

Because for each query, report has to open a separate cursor and has to rebind, execute and fetch data. Read More

At the server. Read More

At the client. Read More

Any event that makes a different record in the master block the current record is a coordination causing event. Read More

Before form , After form , Before report, Between page, After report. Read More

By using the link file property in the layout boiler plate property sheet. Read More

By setting the Restrict To List property to true in the parameter property sheet. Read More

Calls the user exit named in the user_exit_string. Invokes a 3Gl program by name which has been properly linked into your current oracle forms executable. Read More

By using the tables/columns button and then specifying the table and the column names. Read More

By using the statement EXECIAFGET & EXECIAFPUT. Read More

By using the rectangle tool while pressing the (Constraint) key. Read More

An anchoring object is a print condition object which used to explicitly or implicitly anchor other objects to itself. Read More

Destype and Desname. Read More

CREATE-GROUP (function) CREATE_GROUP_FROM_QUERY(function) DELETE_GROUP(procedure) Read More

Cascade Isolate Non-isolate Read More

False Read More

Format trigger. Read More

Exclusive Mode If the first instance that mounts a database does so in exclusive mode, only that Instance can mount the database. Parallel Mode If the first instance that mounts a database is started in parallel mode, other instances that are started... Read More

get_lov_property set_lov_property Read More

It is a terminal screen with the internal state of the form. It updates the screen display to reflect the information that oracle forms has in its internal representation of the screen. Read More

It is a command line argument that allows you to specify a file that contain a set of arguments for r20run. Read More

Libraries provide a convenient means of storing client-side program units and sharing them among multiple applications. Once you create a library, you can attach it to any other form, menu, or library modules. When you can call library program... Read More

Lexical reference is place_holder for text that can be embedded in a SQL statements. A lexical reference can be created using & before the column or parameter name. Read More

It represents the coordination causing event that occur on the master block in master-detail relation. Read More

Modeless windows Modal windows. Read More

The order of the clauses in a query syntax using a GROUP BY clause is as follows: select ?where..group by?having?order by? Where filters, group by arranges into groups, having applies based on group by clause. Having is applied with group by clause... Read More

We can in the alert log. Read More

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.... Read More

Disable the foreign key constraint to the parent, drop the table, re-create the table, enable the foreign key constraint. Read More

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... Read More

UPDATE and DELETE Restrict - A referential integrity rule that disallows the update or deletion of referenced data. DELETE Cascade - When a referenced row is deleted all associated dependent rows are deleted. Read More

There are several possible methods, export-import, CREATE TABLE... AS SELECT, or COPY. Read More

A sequence generates a serial list of unique numbers for numerical columns of a database?s tables. Read More

The IMPORT IGNORE option tells import to ignore "already exists" errors. If it is not specified the tables that already exist will be skipped. If it is specified, the error is ignored and the tables data will be inserted. The default value is N. Read More

Create a plan table with utlxplan. sql. Use the explain plan set statement_id = 'tst1' into plan_table for a SQL statement Look at the explain plan with utlxplp.sql or utlxpls.sql Read More

Use the buffer cache advisory over a given workload and then query the v$db_cache_advice table. If a change was necessary then I would use the alter system set db_cache_size command. Read More

Oracle provides a number of packages in the form of the DBMS_ packages owned by the SYS user. The packages used by DBAs may include: DBMS_SHARED_POOL, DBMS_UTILITY, DBMS_SQL, DBMS_DDL, DBMS_SESSION, DBMS_OUTPUT and DBMS_SNAPSHOT. They may also try to... Read More

ORACLE_BASE is the root directory for oracle. ORACLE_HOME located beneath ORACLE_BASE is where the oracle products reside. Read More

select DBTIMEZONE from dual. Read More

This results in the index that is automatically generated being placed in then users default tablespace. Since this will usually be the same tablespace as the table is being created in, this can cause serious performance problems. Read More

You use the ALTER TABLE command for both. However, for the enable clause you must specify the USING INDEX and TABLESPACE clause for primary keys. Read More

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... Read More

If the UNIX system being used is capable of asynchronous IO then only one is required, if the system is not capable of asynchronous IO then up to twice the number of disks used by Oracle number of DB writers should be specified by use of the... Read More

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. Read More

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. Read More

This is caused by large or long running transactions that have either wrapped onto their own rollback space or have had another transaction write on part of their rollback space. This can be prevented or mitigated by breaking the transaction into a... Read More

By checking the STATUS column of the DBA_, ALL_ or USER_OBJECTS views, depending upon whether you own or only have permission on the view or are using a DBA account. Read More

A column defined as UNIQUE can contain Nulls while a column defined as PRIMARY KEY can?t contain Nulls. 47.What is Index Cluster? - A Cluster with an index on the Cluster Key 48.When does a Transaction end? - When it is committed or Rollbacked. Read More

You need to check that the user has specified the full name of the object (SELECT empid FROM scott.emp; instead of SELECT empid FROM emp;) or has a synonym that points to the object (CREATE SYNONYM emp FOR scott.emp;) Read More

What are the factors that affect OPTIMIZER in choosing an Optimization approach? - Answer The OPTIMIZER_MODE initialization parameter Statistics in the Data Dictionary the OPTIMIZER_GOAL parameter of the ALTER SESSION command hints in the statement. Read More

The best way is to analyze the table and then use the data provided in the DBA_TABLES view to get the average row length and other pertinent data for the calculation. The quick and dirty way is to look at the number of blocks the table is actually... Read More

There are several ways. One is to look at the v$session or v$process views. Another way is to check the current_logins parameter in the v$sysstat view. Another if you are on UNIX is to do a "ps -ef|grep oracle|wc -l? command, but this only works... Read More

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. Read More

SELECT pk_seq.nextval FROM dual; Read More

Run the ANALYZE INDEX command on the index to validate its structure and then calculate the ratio of LF_BLK_LEN/LF_BLK_LEN+BR_BLK_LEN and if it isn?t near 1.0 (i.e. greater than 0.7 or so) then the index should be rebuilt. Read More

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. Read More

The set of objects owned by user account is called the schema. Read More

COMPLETE - Tables are completely regenerated using the snapshots query and the master tables every time the snapshot referenced. FAST - If simple snapshot used then a snapshot log can be used to send the changes to the snapshot tables. FORCE -... Read More

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... Read More

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. Read More

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... Read More

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. Read More

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... Read More

To perform one of these function on an index, table, or cluster: - To collect statistics about object used by the optimizer and store them in the data dictionary. - To delete statistics about the object used by object from the data dictionary. -... Read More

This allows DBA to monitor and control an ORACLE database. SQL * Loader - It loads data from standard operating system files (Flat files) into ORACLE database tables. Export (EXP) and Import (imp) utilities allow you to move existing data in ORACLE... Read More

Shut the database Backup the database Modify/Include LOG_ARCHIVE_START_TRUE in init.ora file. Start up the database. Read More

To aid in the investigation of suspicious db use. Statement Auditing is the auditing of specific SQL statements. Privilege Auditing is the auditing of the use of powerful system privileges. Object Auditing is the auditing of access to specific... Read More

* Installing and upgrading the Oracle Server and application tools. * Allocating system storage and planning future storage requirements for the database system. * Managing primary database structures (tablespaces) * Managing primary objects ... Read More

Each server and background process can write an associated trace file. When an internal error is detected by a process or user process, it dumps information about the error to its trace. This can be used for tuning the database. Read More

Each database user is assigned a Profile that specifies limitations on various system resources available to the user. Read More

Do not grant user access directly to tables within the application. 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... Read More

DBA - role Contains all database system privileges. SYS user account - The DBA role will be assigned to this account. All of the base tables and views for the database?s dictionary are store in this schema and are manipulated only by ORACLE. SYSTEM... Read More

DB NAME - Must set to a text string of no more than 8 characters and it will be stored inside the datafiles, redo log files and control files and control file while database creation. DB_DOMAIN - It is string that specifies the network domain where... Read More

By setting the following values in init.ora file. LOG_ARCHIVE_FORMAT = arch %S/s/T/tarc (%S - Log sequence number and is zero left padded, %s - Log sequence number not padded. %T - Thread number left-zero- padded and %t - Thread number not padded).... Read More

An 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. 95. When will the data in the snapshot log be used? - We must be able to create a... Read More

Updating or Inserting records in remote database through database triggers. It may fail if remote database is having any problem. Read More

Time the references to occur when master tables are not in use. Perform the reference the manually immediately locking the master tables. We can join tables in snapshots by creating a complex snapshots that will based on the master tables. Read More