Hi
I think when Oracle does not have enough space to store intermediate data when executing operations like joining tables, etc...., this error message will be produced.
Please check SQL which caused this error and you may find badly join statement.
or contact your Database administrator and consider about expansion of TEMP tablespace.
"ALTER TABLESPACE TEMP ADD DATAFILE" statement to add one or more files to the TEMP tablespace.
Regards,
Shoichi