Tablespaces and the Database's Schema Objects.

mosin

• Jan 18th, 2018

Tablespace
Segments
Extent

Heena

• Sep 17th, 2017

Tablespaces, Segments, Extent, Data blocks

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ranjithsv

• Oct 2nd, 2013

Its relation between SGA and 5 Mandatory Background process
SMON,PMON,DBWR,LGWR,CKPT

ARUN BHUKKER

 Profile Answers by ARUN BHUKKER Questions by ARUN BHUKKER

• Oct 19th, 2012

A background process maintain relationship between memory structure and physical structure of Oracle server. Started when Oracle instance is started. Consist of 5 mandatory and some optional backgro...

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Prabhat Sahu

• Oct 21st, 2017

B-Tree Index:
1. Oracle Default index.
2. Cardinality is High, means less duplicate(more unique records) (i.e. Rowid)

Bitmap Index:
1. Cardinality is Low, means more duplicate.(most of the values are repetative)
2. Flag related columns ( i.e. M/F, Y/N, 1/0 )

Vineet

• Oct 12th, 2017

1. B-tree Index has high cardinality values, where as Bitmap Index has low Cardinality values.

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A data file can be associated with only one database. Once created a data file can't change size.One or more data files form a logical unit of database storage called a tablespace.

ranjithsv18

• Oct 2nd, 2013

Block size available from 2k,4k,8k,16k and 32k.

As per oracle point of view Default (or) standard block size is 8k for Data files.The initialization parameter

db_block_size=8k (8192)remaining size are non-standard blok size. Extents size 64k.

(Datafile

NAGARAJ OCP

• Dec 27th, 2011

In data files, we cant change the extent management, type of it. But we can change the storage space for it if we need after the database (tablespace) creation.

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sandeep

• Apr 26th, 2013

Ps -ef | grep oracle

chittu.kotian

 Profile Answers by chittu.kotian Questions by chittu.kotian

• May 16th, 2012

On Unix the command is ps -aef | grep -i pmon

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Heena

• Sep 17th, 2017

Database writer process(DBWn)

sriram

• May 17th, 2016

DBWR is one of the BG processed of Oracle DB. It writes modifies the data in data base buffer cache

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When does the LGWR writes all redo-enteries to the redo-log buffer?

Suresh

• Oct 31st, 2017

1) When user hits commit
2) When there is 1/3rd full in redo log cache
3) One every 3 seconds

During this above situation LGWR writes redo log entries into redo log files from redo log cache !!

Mayur Pimpalkar

• Dec 24th, 2015

Lwgr process writes redo entries to online redolog files not to redobuffer.

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