Query erroring out with lack of temp space?

Question

I have 2 databases. One was cloned from the other on to another server.
On one server the query takes 5 seconds to run on the other server the query errors lack with lack of disk space.
The init files are the same. The Oracle memory is the same. The temp tablespace size is the same.
I'm stuck!
What should I look for to find out what is causing the error?

Answer 1

On both databases the version is 9.2.0.6.
This is the view that worked in database1 and errored in database2...
CREATE OR REPLACE VIEW SAP_STAGE.MTC_STG_MEASURE_POINT_V
EQUIP_NO,
MEASUR_PNTPOS,
CHARACT_NAME,
UNIT,
MEASUR_PNT_DESC,
VALUATION_CODE,
TEXT_FIELD
AS
SELECT DISTINCT xref.equnr AS equip_no, rpmp.*
FROM sap_stage.measuring_point mp JOIN xref_sap_equi xref
ON TRIM (mp.equip_no) = TRIM (xref.groes)
JOIN stg_mtc_msf600 msf600
ON TRIM (mp.equip_no) = TRIM (msf600.equip_no)
AND TRIM (msf600.dstrct_code) in ('347','315')
JOIN rec_prodstat_code_measur_pts rpmp ON 1 = 1
If I qualify all the tables with SAP_STAGE the query runs in 5 seconds in database2.
Why does the query run in database 1 without the schema names?