Oracle: Database Server Architecture MCQs

58 MCQs (Page 3 of 6)

Attempt Oracle: Database Server Architecture Quiz

Which file stores the database's physical structure and is read at MOUNT stage?

Password file
Alert log
Control file
Trace file

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What is a tablespace?

A physical disk
A logical storage unit that groups related segments and is made up of datafiles
A memory structure
A type of user

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What is the smallest logical unit of database storage?

Extent
Segment
Data block
Tablespace

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What is an extent?

A group of tablespaces
A set of contiguous data blocks allocated to a segment
A type of index
A single row

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What is a segment?

A single block
A set of extents that stores a database object such as a table or an index
A background process
A redo log

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Which tablespace contains the data dictionary and must always be online?

USERS
SYSTEM
TEMP
UNDOTBS1

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What is the temporary tablespace used for?

Storing permanent tables
Storing backups
Sort operations and temporary results that don't fit in memory
Storing user passwords

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What is stored in the undo tablespace?

Archived redo logs
Backup sets
Parameter files
Before-images of changed data used for rollback and read consistency

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In Oracle multitenant architecture, what is a PDB?

A pluggable database that is hosted inside a container database (CDB)
A backup database
A password database
A partitioned data block

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What is the difference between dedicated and shared server connections?

Dedicated uses one server process per session; shared uses dispatchers and a pool of server processes
Dedicated is faster for backups only
Shared server uses no memory
Dedicated requires RAC

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