Drop Down MenusCSS Drop Down MenuPure CSS Dropdown Menu

tablespace create,add,delete,alter,views

Tablespace : is logical storage unit in Oracle Database.
ii) Tablespace connsit of one or more datafiles (check below)
iii) Information about Tablespace can be obtained from view DBA_TABLESPACES, USER_TABLESPACES, DBA_TEMP_FILES (for Temporary Tablespaces)
iv) Tablespace is further divided in to logical units Segments (Segment is divided in to Extent and Extent in to Block) . To know more about Segment, Extents and Blocks click here
v) Various type of tablespace are BIGFILE, SYSTEM, SYSAUX, UNDO
Datafiles : is physical structure to store oracle data
ii) One or more physical datafile are logically grouped together to make a tablespace
iii) Information about Datafile can be obtained from view DBA_DATA_FILESiv) A Datafile can be associated with only one tablespace
Adding Tablespace in databaseUse CREATE TABLESPACE command to add tablespace in Database like
CREATE TABLESPACE <tablespace_name> DATAFILE <location_of_datafile>
CREATE TABLESPACE my_tablespace DATAFILE ‘/u01/oracle/oradata/data01.dbf';
To create undo tablespace
To create Temporary tablespace
CREATE TEMPORARYTABLESPACE <tablespace_name> TEMPFILE <location_of_datafile> SIZE <size> [AUTOEXTEND ON|OFF] 
Adding Datafile in a TablespaceUse ALTER TABLESPACE to add datafile in tablespace like
ALTER TABLESPACE <tablespace_name> ADD DATAFILE <location_of_datafile>
ALTER TABLESPACE my_tablespace ADD DATAFILE ‘/u01/oracle/oradata/data02.dbf';
To add temporary file in TEMP table space
ALTER TABLESPACE <tablespace_name> ADD TEMPFILE ‘<location_of_tempfile>’ SIZE <size>;
Modify DatafileYou can modify datafile using ALTER DATABASE command like
ALTER DATABASE DATAFILE ‘/u01/oracle/oradata/data02.dbf’ AUTOEXTEND ON NEXT 30M MAXSIZE 1200M;
which means datafile data02.dbf can automatically grow upto 1200 MB size in blocks of 30 MB each time as required.


Popular posts from this blog

How to Get Table Size, Database Size, Indexes Size, schema Size, Tablespace Size, column Size in PostgreSQL Database

7 Steps to configure BDR replication in postgresql

How to find the server is whether standby (slave) or primary(master) in Postgresql replication ?

PostgreSQL Monitoring Tools

PostgreSQL pgBadger