ORA-01555 error when assigning values based on geometry

Question

Hello,
I have a table with 220,000+ records with street information, and I am trying to assign a municipal area (stored in another table) based on the geometry of the road line and the geometry of the municipal boundary.
CREATE TABLE TEMP AS SELECT A.ID, B.AREA FROM ROADS A, PLACES B WHERE B.TYPE IN (33,35,36,37) AND mdsys.sdo_relate (a.geometry,b.geometry,'
mask=inside querytype = window')='TRUE';
This took a long time to run and it came back with a series of errors, one of which was ORA--01555 'snapshot too old'. I was running other queries on the table (in a separate SQL window) because I'm under a deadline, so i figured that doing multiple things at one time while the spatial query was running was causing the problem. I didn't have time to run it again (it was the end of the day when the error came up, conveniently) so I am trying to work out a solution to this issue.
Would it be better if I: a) ran the statement again on the whole dataset and did nothing else while it is running, even though it will still take a while, or
b) broke it up into groups of 50,000 records and run the statement on one group at a time and hope for the best.
Thanks in advance!

Answer 1

Assuming you have less municipal areas than roads, the query should perform better by specifying the join order:
CREATE TABLE TEMP AS (
     SELECT /*+ ORDERED */ A.ID, B.AREA
     FROM PLACES B, ROADS A
     WHERE B.TYPE IN (33,35,36,37)
     AND mdsys.sdo_relate (a.geometry, b.geometry,'mask=inside querytype = window') = 'TRUE');Also, are you sure 'inside' is the right mask to use here? What if a road intersects the edge of the municipality? In that case it wouldn't be returned by this query.