1z0-082 Oracle Database Administration I Questions and Answers

The online redo logs are opened

The online data files are opened

The alert log records the execution details

The Oracle background processes are started

The initialization parameter file is read

The control file is read

Table segments always have two or more extents.

Temporary segments are only stored in a temporary tablespace.

Undo segments are only stored in an undo tablespace.

Cluster segments may contain data from multiple tables.

Index segments always have two or more extents.

If sequence ORD_SEQ is dropped then the default value for column ORD_NO will be NULL for rows inserted into ORD_ITEMS

Any user inserting rows into table ORD_ITEMS must have been granted access to sequence ORD_SEQ

Column ORD_NO gets the next number from sequence ORD_SEQ whenever a row is inserted into ORD_ITEMS and no explicit value is given for ORD_NO

Sequence ORD_SEQ cycles back to 1 after every 5000 numbers and can cycle 20 times

Sequence ORD_SEQ is guaranteed not to generate duplicate numbers

All roles granted to a user are set on by default when the user logs in,

Object privileges may not be granted to roles.

The SET ROLE statement can disable one or more roles for a session.

Roles must be password protected.

Roles may be granted to roles.

The SET ROLE statement can enable one or more roles for a session.

SELECT prod_id FROM sales WHERE quantity_sold > 55000 GROUP BY prod_id HAVING COUNT(-) > 10;

SELECT prod_id FROM sales WHERE quantity_sold > 5S000 AND COUNT(-) > 10 GROUP BY prod_id HAVING COUNT(-) > 10;

SELECT COUNT|prod_id> FROM sales WHERE quantity_sold > 55000 GROUP BY prod_id;

SELECT COUNTlprod_id> FROM sales GROUP BY prod_id WHERE quantity_Sold > 55000;

SELECT prod_id FROM sales WHERE quantity_scld > 55000 AND COUNT(-) > 10 GROUP BY COUNT(-) > 10;

INTERVAL year TO month columns support yearly intervals.

The value in an interval day to SECOND column can be copied into an interval year to month column.

INTERVAL day to second columns support fractions of seconds.

INTERVAL year to month columns only support monthly Intervals within a single year.

INTERVAL year to month columns only support monthly intervals within a range of years.

The year field in an interval year to month column must be a positive value.

Private database link creation requires the same user to exist in both the local and the remote databases.

A public database link can be created only by sys.

A database link can be created only between two Oracle databases.

A public database link can be used by a user connected to the local database instance to connect to any schema in the remote database instance.

A database link created in a database allows a connection from that database's instance to the target database's Instance, but not vice versa.

DBA_DATA_FILES displays the original name for the data files.

V$DATAFILE displays the new names for the data files.

DBA_DATA _FILES displays both the new name and the old name for the data files.

DBA_DATA_FILES displays the new name for the data files.

DBA_DATA_FILES must be resynchronized manually with the control file an order to have it display the new file names.

It is available only when the database is open

It can be used to perform database recovery

The same port number can be used for Database Express configurations for databases on different hosts

It can be used to switch a database into ARCHIVELOGMODE

The same port number can be used for multiple Database Express configurations for multiple databases on the same host

The control files are opened.

The consistency of the database is checked.

All required background processes are started.

SYS can access the database.

Memory is allocated for the SG1

SELECT NULLIF(NULL, 100) FROM DUAL;

SELECT COALESCE (100, 'AM FROM DUAL;

SELECT 2TOLLIF(100, 'A') FROM DUAL;

SELECT NULLIF(100,100) FROM DUAL;

SELECT COALESCE(100, NULL, 200) FROM DUAL;

Employee 100 will have SALARY set to the same value as the SALARY of employee 200

Employee 200 will have JOB_ID set to the same value as the JOB_ID of employee 100

Employee 200 will have SALARY set to the same value as the SALARY of employee 100

Employee 100 will have JOB_ID set to the same value as the JOB_ID of employee 200

Employees 100 and 200 will have the same JOB_ID as before the update command

Employees 100 and 200 will have the same SALARY as before the update command

It has its own commands that are separate from any SQL statements.

It must be downloaded from the Oracle Technology Network (OTN).

It can run scripts entered at the SQL prompt.

It can run Recovery Manager (RMAN) commands.

It has both command-line and graphical user interfaces (GUI).

It can run scripts passed to it by a shell script.

Aggregate functions can be nested to any number of levels

The AVG function implicitly converts NULLS to zero

Aggregate functions can be used in any clause of a SELECT statement

The MAX and MIN functions can be used on columns with character data types

A synonym cannot be created for a PL/SQL package

A synonym can be available to all users

A SEQUENCE can have a synonym

A synonym created by one user can refer to an object belonging to another user

Any user can drop a PUBLIC synonym

dump files

control files

password files

bad files

input files

The concatenation operator | | is always evaluated before addition and subtraction in an expression

NULLS influence the precedence of operators in an expression

The + binary operator has the highest precedence in an expression in a SQL statement

Arithmetic operators with equal precedence are evaluated from left to right within an expression

Multiple parentheses can be used to override the default precedence of operators in an expression

A substitution variable prefixed with & always prompts only once for a value in a session.

A substitution variable prefixed with to prompts only once for a value in a session unless it is set to undefined in the session

A substitution variable can be used only in a select statement.

A substitution variable used to prompt for a column name must be enclosed in single quotation marks.

A substitution variable can be used with any clause in a select statement.

A substitution variable used to prompt for a column name must be enclosed in double quotation marks.