Here in this article, we will check how to check datafiles in the Oracle database, how to check datafile size in oracle,How to check datafile location in Oracle, how to check datafiles in tablespace
How to check datafiles in Oracle/How to check datafile location in Oracle
select file_name, bytes/1024/1024 from dba_data_files ;
With CDB Databases, you need to connect to individual PDB and execute the query to check the tablespace. If you want to gather all the tablespace across all the PDBs and Root containers, then you need to fire the below query connected to the root container
select file_name, con_id from cdb_data_files;
How to list datafiles in tablespace in oracle/how to check datafiles in tablespace
select file_name from dba_data_files where tablespace_name like '%&tablespace%';
How to check datafile Size in Oracle
select file_name, bytes/1024/1024 from dba_data_files where file_name like '%&file%';
how to find number of datafiles in Oracle
select count(*) from dba_data_files ;
With CDB Databases, you need to connect to individual PDB and execute the query to check the tablespace. If you want to gather all the tablespace across all the PDBs and Root containers, then you need to fire the below query connected to the root container
select count(*), con_id from cdb_data_files group by con_id;
what is the maximum datafile size limit in oracle database 12c
For a Small file with normal tablespace, we can have 4 Million blocks. So maximum tablespace size as per blocks size will be
2K block,8G
4K block, 16 G
8 K block, 32 G
16K blocks, 64 G
32 K blocks, 128 G
For big file normal tablespace, we can have 4 Billion blocks. So maximum tablespace size as per blocks size will be
2K block,8TB
4K block, 16 TB
8 K block, 32 TB
16K blocks, 64 TB
32 K blocks, 128 TB
What is the maximum number of datafiles in Oracle
max per tablespace = OS-dependent, usually 1022
max per database = 65533, sometimes less on different OS
It is also controlled by the parameter db_files
how to check datafile status in oracle
select file_name, status from dba_data_files ;
With CDB Databases, you need to connect to individual PDB and execute the query to check the tablespace. If you want to gather all the tablespace across all the PDBs and Root containers, then you need to fire the below query connected to the root container
select file_name, con_id,status from cdb_data_files;
how to check offline datafile in oracle
Select file#,file_name,status from v$datafile where status = 'OFFLINE';
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