Check the Size of Oracle Database and PDBS database

Check the Size of Oracle Database and PDBS database

NON – CDB Queries:

Check the database size physical consume on disk

select sum(bytes)/1024/1024 size_in_mb from dba_data_files;

Check the total space used by data

select sum(bytes)/1024/1024 size_in_mb from dba_segments;

Check the size of User or Schema in Oracle

select owner, sum(bytes)/1024/1024 Size_MB from dba_segments group by owner;

Check free space and used space in database

select
"Reserved_Space(MB)", "Reserved_Space(MB)" - "Free_Space(MB)" "Used_Space(MB)","Free_Space(MB)"
from(
select
(select sum(bytes/(1014*1024)) from dba_data_files) "Reserved_Space(MB)",
(select sum(bytes/(1024*1024)) from dba_free_space) "Free_Space(MB)"
from dual );

Check overall size of database plus tempfiles plus redo file

select
( select sum(bytes)/1024/1024/1024 data_size from dba_data_files ) +
( select nvl(sum(bytes),0)/1024/1024/1024 temp_size from dba_temp_files ) +
( select sum(bytes)/1024/1024/1024 redo_size from sys.v_$log ) +
( select sum(BLOCK_SIZE*FILE_SIZE_BLKS)/1024/1024/1024 controlfile_size from v$controlfile) "Size in GB"
from
dual;

CDBS and PDBS Queries:

Check the PDB Size

select con_id, name, open_mode, total_size from v$pdbs;

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