# Toad 12.11 ORA-02248 on datafile maintenance (add/alter) in Oracle 12.1 non-CDB

**URL:** <https://forums.toadworld.com/t/toad-12-11-ora-02248-on-datafile-maintenance-add-alter-in-oracle-12-1-non-cdb/39859>\
**Category:** Toad for Oracle & DevOps Toolkit\
**Created:** [August 16, 2017, 3:16am UTC](https://forums.toadworld.com/t/toad-12-11-ora-02248-on-datafile-maintenance-add-alter-in-oracle-12-1-non-cdb/39859 "2017-08-16T03:16:43Z")\
**Posts on this page:** 2\
**Page:** 1

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**Author:** ![chazamania](https://sea1.discourse-cdn.com/quest/user_avatar/forums.toadworld.com/chazamania/32/137_2.png) [@chazamania](https://forums.toadworld.com/u/chazamania)\
**Post date:** [August 16, 2017, 3:16am UTC](https://forums.toadworld.com/t/toad-12-11-ora-02248-on-datafile-maintenance-add-alter-in-oracle-12-1-non-cdb/39859/1 "2017-08-16T03:16:43Z")

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I saw a similar thread on the beta forum. It performs the desired change, but always ends with the error. It just started in 12.11.

Spooled SQL:

ALTER DATABASE  
DATAFILE ‘/db01/ORACLE/tundaimx/system01.dbf’  
AUTOEXTEND ON  
NEXT 1M  
MAXSIZE 8G;

ALTER SESSION SET CONTAINER =;  
Error: ORA-02248: invalid option for ALTER SESSION

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**Author:** ![JohnDorlon](https://sea1.discourse-cdn.com/quest/user_avatar/forums.toadworld.com/johndorlon/32/9997_2.png) [@JohnDorlon](https://forums.toadworld.com/u/JohnDorlon)\
**Post date:** [August 16, 2017, 5:35am UTC](https://forums.toadworld.com/t/toad-12-11-ora-02248-on-datafile-maintenance-add-alter-in-oracle-12-1-non-cdb/39859/2 "2017-08-16T05:35:53Z")

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Thanks, this is fixed for next beta. Sorry about that. The error is harmless and you can ignore it.