Auto Extend is on , but maximum file size is 3276MB

Question

Dear Experts,
small Doubt , Auto Extend is on in my DB . it is automaticaly extending the table space when datafile is full , increment size is 10240 KB. but my doubt is what is maximum file size it is showing 3276MB . what happend if we reach there?
Arun

Answer 1

Your datafile max size is set to 3276 mb (3.19GB).
Once your datafile reaches the specified limit, you need to add more space to tablespace by adding additional datafiles.
In your case you can set maxsize to unlimited by altering(For 8k block max size of datafile could be around 32 gb)
SQL> create tablespace autoextend datafile '+TEST' size 50m autoextend on maxsize 1g;
Tablespace created.
Created tablespace with datafile autoextend on and maxsize 1G;
SQL> select file_name,file_id from dba_data_files where tablespace_name='AUTOEXTEND';
FILE_NAME
FILE_ID
+TEST/clonev/datafile/autoextend.1346.790792253
139
SQL> select autoextensible,maxbytes/1024/1024/1024 "G" from dba_data_files where tablespace_name='AUTOEXTEND';
AUT Gb
YES 1
SQL> alter database datafile 139 autoextend on maxsize 2g;
Database altered.
SQL> select autoextensible,maxbytes/1024/1024/1024 "G" from dba_data_files where tablespace_name='AUTOEXTEND';
AUT G
YES 2
We changed maxsize from 1G to 2G
SQL> alter database datafile 139 autoextend on maxsize unlimited;
Database altered.
SQL> select autoextensible,maxbytes/1024/1024/1024 "G" from dba_data_files where tablespace_name='AUTOEXTEND';
AUT G
YES 31.9999847
You could see maxsize limit of 32GB,
you can check following note
What is The Maximum Datafile Size Limit In Oracle Database 10gR2 [ID 804733.1]