ORA-00600: internal error code, arguments: [4194], [4], [31]

startup mount ;
select name from v$datafile;
select tablespace_name from dba_tablespaces;

[@more@]

startup mount ;
select name from v$datafile;
select tablespace_name from dba_tablespaces;

alter database datafile '/export/home/oracle/oradata/ECOM/undotbs01.dbf' offline drop;

alter tablespace UNDOTBS1 add datafile '/export/home/oracle/oradata/ECOM/undotbs02.dbf' size 200M;
# create undo tablespace undotbs2 datafile '/export/home/oracle/oradata/ECOM/undotbs02.dbf' size 200m;

ALTER SYSTEM SET undo_tablespace='UNDOTBS1'