Oracle ORA-01653: "unable to extend table" — Why Tablespace Cannot Grow?

Distinguishing ORA-01653, 01654, and 01652, tablespace capacity monitoring, datafile autoextend, and safe sizing with MAXSIZE.

Reviewed by:Senior Database Architect & SRE (dataiotech Labs)

Tested Versions: Oracle Database 19c / 21c / 23ai

First 60 Seconds Emergency Protocol:

The error string is a symptom, not the root cause. Do not restart the server blindly. Run the diagnostic queries below to pinpoint the actual failure mode.

▸Symptoms

plaintext

ORA-01653: unable to extend table APP.SIPARIS by 1024 in tablespace APP_DATA

▸Diagnosis & Resolution

1Verify Error Code:

•ORA-01653: Table segment in datafile
•ORA-01654: Index segment in datafile
•ORA-01652: Temporary segment in tempfile

1Check Utilization & Datafiles:

sql

   SELECT tablespace_name, file_name, autoextensible, ROUND(maxbytes/1048576) AS max_mb
   FROM dba_data_files WHERE tablespace_name = 'APP_DATA';

1Extend Tablespace:

sql

   ALTER TABLESPACE APP_DATA
     ADD DATAFILE '/u01/app/oracle/oradata/ORCL/app_data02.dbf'
     SIZE 4G AUTOEXTEND ON NEXT 256M MAXSIZE 32767M;

Never use MAXSIZE UNLIMITED to prevent OS disk exhaustion.