Trying to create a fact table,error:unable to extend temp segement

Question

Using Oracle 10.2g
SQL>
create materialized view facts_table
(     s_id
,     g_id
,     sb_id
,     sc_id
,     y_id)
refresh with rowid
as      select s.s_id
,     g.g_id
,     sb.sb_id
,     sc.sc_id
,     y.academicyear
from      student s
,     grade g
,     subject sb
,     school sc
,     comqdhb.teachinggroup y;
ERROR at line 3:
ORA-01652: unable to extend temp segment by 1024 in tablespace POSTGRADSI am creating the fact table as materialized view because its specified for us.
I am trying to create a fact table from the dimension tables and its giving this error
what is the mistake kindly help.
Also when creating the fact table do all the columns need to be foreign keys compulsorily.
Edited by: Trooper on Jan 10, 2009 5:25 AM
Edited by: Trooper on Jan 10, 2009 6:37 AM

Answer 1

Well basically what your saying is absolutely right
I realized what i am doing right now is stupendous blunder.
Basically my aim is there are 5 dimensional tables that are created
Student->s_id primary key,upn(unique pupil no),name
Grade->g_id primary key,grade,exam_level,values
Subject->sb_id primary key,subjectid,subname
School->sc_id primary key,schoolno,school_name
year->y_id primary key,year(like 2008)
s_id,g_id,sb_id,sc_id,y_id are sequences
select * from student;
S_ID UPN FNAME COMMONNAME GENDER DOB
==============================
9062 1027 MELISSA ANNE       f  13-OCT-81
9000 rows selected
select * from grade;
      G_ID GRADE      E_LEVEL         VALUE
        73 A          a                 120
        74 B          a                 100
        75 C          a                  80
        76 D          a                  60
        77 E          a                  40
        78 F          a                  20
        79 U          a                   0
        80 X          a                   0
18 rows selectedThese are basically the dimensional views
Now according to the specification given, need to create a fact table as facts_table which contains all the dim tables primary keys as foreign keys in it.
The problem is when i say,I am going to consider a smaller example than the actual no of dimension tables 5 lets say there are 2 dim tables student,grade with s_id,g_id as p key.
create materialized view facts_table(s_id,g_id)
as
select  s.s_id,g.g_id
from   (select distinct s_id from student)s
,         (select distinct g_id from grade)gThis results in massive duplication as there is no join between the two tables.But basically there are no common things between the two tables to join,how to solve it?
Consider it when i do it for 5 tables the amount of duplication being involved, thats why there is not enough tablespace.
I was hoping if there is no other way then create a fact table with just one column initially
create materialized view facts_table(s_id)
as
select s_id
from student;then
alter materialized view facts_table add column g_id number;Then populate this g_id column by fetching all the g_id values from the grade table using some sort of loop even though we should not use pl/sql i dont know if this works?
Any suggestions.
Edited by: Trooper on Jan 10, 2009 6:38 AM