Hi,
If the asm disk group is full then the following statement will fail.
ALTER TABLESPACE "***_TS_01"
ADD DATAFILE '+DATA/***DATAFILE/***.dbf' SIZE 100M
AUTOEXTEND ON NEXT 512M MAXSIZE 30G;
In such a scenarion, execute the following sql statement to check how much storage is available in the asm diskgroup.
select NAME, TOTAL_MB/1024 "Total in GB",FREE_MB/1024 "FREE in GB" from v$asm_diskgroup;
Then, accordingly appropriate action can be taken.
Regards,