View Performance Issues

Question

Basically I have created a View that I can Select count(*) on and it returns the number of rows, I use the view for an Insert query to one table only pulling through several fields and after a bit of a pause it works...
I then Insert the whole view to another table and Oracle seems to hang and temp space increases until it uses all 2.5 GB it was on 700 MB when I started the second Insert. We are only talking about 50,000 rows or so.
The View is quite complex but surely Oracle has to create the whole view in order to Insert a few fields? So why does it hang on a Select * ?
CREATE OR REPLACE VIEW VW_FAMITY_TRANSFORM AS
SELECT CC_REF || '-' || RTrim(FAM_B_Prefix) AS CD_PROP, FAM_Surv_date AS CD_DATE, FAM_Unique_no AS CD_SEQ, TYP_TYPE AS CD_TYPE, FAM_SK_no AS CD_REF, FAM_E_no AS CD_OPT, FAM_SP_no AS CD_SUBOPT,
FAM_Unique_no AS CD_NO, FAM_R_no AS CD_UREF, FAM_R_Name AS CD_UNAME, FAM_R_no AS CD_ALLOCUREF,
FAM_SP_name AS CST_DESC, FAM_SK_name AS CSC_DESC, SUBSTR(FAM_Condition,1,3) AS CD_COND, FAM_PriorityVal AS CD_REP, NULL AS CD_REPDATE,
FAM_Cost AS CD_M1, NULL AS CD_EST, FAM_Types AS CD_SHED, NULL AS CD_ACTION, NULL AS CD_INF, NULL AS CD_START, NULL AS CD_COMP,
NULL AS CD_FAULT, Null AS CD_CHARGE, RTrim(FAM_SK_name) || ' ' || RTrim(FAM_E_name) || ' ' || RTrim(FAM_SP_name) AS CD_RACTION, FAM_R_Usage AS CD_CONSEQUENCE,
FAM_FailYearVal AS CD_FAILYR, NULL AS CD_SCHYEAR, NULL AS CD_SCHPERD, FAM_Surv_Name AS CD_SURVEYOR, FAM_Units AS CD_C1, FAM_Dim AS CD_C2, FAM_Mg_dim AS CD_C3,
FAM_Qty AS CD_M2, FAM_Mg_qty AS CD_M3, NULL AS CD_D1, NULL AS CD_D2, NULL AS CD_D3, FAM_Surv_Status AS CD_STATUS, NULL AS CD_ORIGIN, NULL AS CD_IND, NULL AS CD_BEDESC,
NULL AS CD_CAT, FAM_Notes AS CD_DESC, FAM_E_name AS CD_CDESC, NULL AS CD_NEWSEQ, 'Y' AS CD_CANPROCESS
FROM LD_FAMITY2, LD_CCENT, LD_TYPE, UNIT
WHERE (CC_AREA = FAM_AREA) AND (FAM_SK_no = TYP_SK_no)
AND (CC_REF || '-' || RTrim(FAM_B_Prefix) = RTrim(UN_BREF) AND TO_CHAR(FAM_R_no) = RTrim(UN_UREF));
INSERT INTO CSURV_ADD (CS_SURVEYOR, CS_PROP, CS_PNAME, CS_DATE, CS_SEQ, CS_UREF, CS_UNAME, CS_ALLOCPROP, CS_ALLOCUREF, CS_STATUS, CS_CANPROCESS) SELECT CD_SURVEYOR, CD_PROP, PR_NAME, CD_DATE, CD_SEQ, CD_UREF, CD_UNAME, CD_PROP, CD_UREF, CD_STATUS, CD_CANPROCESS FROM VW_FAMITY_TRANSFORM, PROP WHERE (CD_PROP = RTRIM(PR_SNAM));
INSERT INTO CDOTD_ADD SELECT * FROM VW_FAMITY_TRANSFORM;
Basically I need to know why the temp space is fine for the first Insert and not for the second or any way to optimise.

Answer 1

It is not a SQL*Plus tool issue; your question
is posted in the wrong forum. Please ask again in
the Database forum at http://www.oracle.com/forums/forum.jsp?forum=61
or the SQL forum at http://www.oracle.com/forums/forum.jsp?forum=75
-- CJ