Explain the difference between a data block, an extent and
a segment.
- 1 Answers
- 8448 Views
- Accenture, IBM, I also Faced
- E-Mail Answers
Answer / kumar.s
Datablock, Extent and Segment
A segment is defined as any entity that consumes physical
storage space within the database.
Each Oracle segment is made up of contiguous chunks of
storage space in the database called extents. Every segment
must have at least one extent, but can have as many as 2
billion extents.
Each extent is itself made up of a collection of smaller
chunks of space called Oracle database blocks. The minimum
size of an extent is five database blocks.
The default size of these database blocks is set at
database creation, but Oracle 10g db can use multiple block
sizes within one db. The common database block sizes are
2KB, 4KB, 8KB, and 16KB.
| Is This Answer Correct ? | 10 Yes | 2 No |
Why more redos are generated when the oracle database is in begin backup mode?
what is shared memory?
what is correlated subquery
how to create an user in oracle 10g.please give me an example..
Name three advisory statistics you can collect.
What are the interface tables used for ar invoices, customers, receipts for conversion process? : oracle accounts receivable
hi iam looking for HRMS(functional) training inst or person in hyderbad. plz help me its urgent
what are the API of GL,PO,AP
What do you mean by Oracle MEDIA RECOVERY?
What background process refreshes materialized views?
what is sql*loader parameters and where we will use it.
What is $FLEX$ and $PROFILES$?
Oracle General 
