Slow View

Question

Running Oracle 10.2.0.4.0
I have a view rz_cocc_appl_requirements used in the Banner product from Sungard Higher Education. The view runs very slow under the conditions described below. Why does the view run slow except when selecting all columns or the phone_number1 column?
When selecting all columns the results are displayed immediately.
select * from rz_cocc_appl_requirementsWhen selecting only one of the columns the query runs for several minutes.
select pidm_key from rz_cocc_appl_requirementsWhen the phone_number1 column is selcted the results are displayed immediately. This is the only column where the results are displayed immediately.
select phone_number1 from rz_cocc_appl_requirementsrz_cocc_appl_requirements view.
CREATE OR REPLACE FORCE VIEW "BANINST1"."RZ_COCC_APPL_REQUIREMENTS" ("PIDM_KEY", "ID_KEY", "SSN_KEY", "LAST_NAME", "FIRST_NAME", "MIDDLE_INITIAL", "STREET1_LINE1", "STREET1_LINE2", "CITY1", "STAT_CODE1", "CNTY_CODE1", "ZIP1", "PHONE_AREA_1", "PHONE_NUMBER1", "AIDY_CODE", "TGRP_CODE", "TREQ_CODE", "TREQ_DESC", "SAT_IND", "STAT_DATE", "EST_DATE", "TRST_CODE", "PCKG_IND", "DISB_IND", "FUND_CODE", "SYS_IND", "SBGI_CODE", "MEMO_IND", "USER_ID")
AS
  SELECT
    /* + rule */
    RRRAREQ_PIDM,
    SPRIDEN_ID,
    SPBPERS_SSN,
    SPRIDEN_LAST_NAME,
    SPRIDEN_FIRST_NAME,
    SUBSTR (SPRIDEN_MI, 1, 1),
    x.SPRADDR_STREET_LINE1,
    x.SPRADDR_STREET_LINE2,
    x.SPRADDR_CITY,
    x.SPRADDR_STAT_CODE,
    x.SPRADDR_CNTY_CODE,
    x.SPRADDR_ZIP,
    DECODE(v.SPRTELE_UNLIST_IND,'Y','***',v.SPRTELE_PHONE_AREA),
    DECODE(v.SPRTELE_UNLIST_IND,'Y','*******',v.SPRTELE_PHONE_NUMBER),
    RORSTAT_AIDY_CODE,
    RORSTAT_TGRP_CODE,
    RRRAREQ_TREQ_CODE,
    RRRAREQ_TREQ_DESC,
    RRRAREQ_SAT_IND,
    RRRAREQ_STAT_DATE,
    RRRAREQ_EST_DATE,
    RRRAREQ_TRST_CODE,
    RRRAREQ_PCKG_IND,
    RRRAREQ_DISB_IND,
    RRRAREQ_FUND_CODE,
    RRRAREQ_SYS_IND,
    RRRAREQ_SBGI_CODE,
    RRRAREQ_MEMO_IND,
    RRRAREQ_USER_ID
  FROM SPRIDEN,
    SPRADDR x,
    SPRTELE v,
    SPBPERS,
    RRRAREQ,
    RORSTAT
  WHERE RRRAREQ_AIDY_CODE = RORSTAT_AIDY_CODE
  AND RRRAREQ_PIDM        = SPRIDEN_PIDM
  AND RRRAREQ_PIDM        = RORSTAT_PIDM
  AND SPBPERS_PIDM (+)    = RORSTAT_PIDM
  AND SPRIDEN_CHANGE_IND IS NULL
  AND x.rowid(+)          = f_address_using_hierarchy (RRRAREQ_PIDM)
  AND v.rowid(+)          = f_get_address_telephone_rowid (RRRAREQ_PIDM,'FAPLADDR','A',sysdate,1,'R',NULL);Edited by: user8761227 on Nov 30, 2009 1:46 PM
Edited by: user8761227 on Nov 30, 2009 1:47 PM

Answer 1

Check out these links:
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{thread:id=863295}
I noticed in your view you are using the RULE hint. Why? My high level recommendation would be to remove the RULE hint, gather statistics on the objects if you haven't already and see how it performs. You may be pleasantly surprised.