USING dbms_stats.gather_schema_stats
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Thread: USING dbms_stats.gather_schema_stats

  1. #1
    Join Date
    Feb 2001
    Posts
    119
    i WANT to use the dbms_stats.gather_schema_stats
    ..

    Is sprd is the schema name ..IS this method correct ..
    exec dbms_stats.gather_schema_stats('SPRD', cascade => true);

  2. #2
    Join Date
    Feb 2001
    Posts
    119
    my schema name is sprd ...

  3. #3
    Join Date
    Jun 2000
    Location
    Madrid, Spain
    Posts
    7,447
    Code:
    DECLARE
    errmsg ctl_error_proceso.des_error%type;
    BEGIN
    execute immediate 'alter session set sort_area_size=10485760';
    for i in (select username from dba_users where username in ('LSC'))
    LOOP
    dbms_stats.gather_schema_stats(OWNNAME => i.username,
    ESTIMATE_PERCENT => 20,
    METHOD_OPT => 'FOR ALL COLUMNS SIZE 75',
    DEGREE => 1,
    CASCADE => TRUE);
    END LOOP;
    EXCEPTION
      WHEN OTHERS THEN
      errmsg := 'Error during analyze: '||sqlerrm;
      insert into ctl_error_proceso values(seq_cod_error_proceso.nextval, sysdate, errmsg);
      commit;
    END;
    /
    check the dbms_stats part

  4. #4
    Join Date
    Dec 2001
    Location
    UK
    Posts
    1,684
    Looks fine to me!
    Tim...
    OCP DBA 7.3, 8, 8i, 9i, 10g, 11g
    OCA PL/SQL Developer
    Oracle ACE Director
    My website: www.oracle-base.com
    My blog: www.oracle-base.com/blog

  5. #5
    Join Date
    Feb 2001
    Posts
    119
    First time use sorry

    What is LSC ??
    IF WE ARE saying username in dba_users will it not analyze
    sys objects which should not be the case ???
    how to create this table ctl_error_proceso

  6. #6
    Join Date
    Jun 2000
    Location
    Madrid, Spain
    Posts
    7,447
    LSC is me! my username in the database

    if you see in dbms_stats I have i.username that will be 'LSC' so the syntax to excute in sql*plus

    Code:
    execute dbms_stats.gather_schema_stats(OWNNAME => 'LSC',-
    ESTIMATE_PERCENT => 20,-
    METHOD_OPT => 'FOR ALL COLUMNS SIZE 75',-
    DEGREE => 1,-
    CASCADE => TRUE);
    table ctl_error_proceso is a process exception control table, you dont need it. I use it to store exceptions just in case any process fails

    CREATE TABLE CTL_ERROR_PROCESO (
    COD_ERROR_PROCESO NUMBER,
    FEC_ERROR DATE,
    DES_ERROR VARCHAR2 (256))


    since my implict cursor contains 'LSC' only the pl/sql procedure will analyze for this user only, if I need more user I just add more username in the cursor

    you can ignore METHOD_OPT => 'FOR ALL COLUMNS SIZE 75' if you dont want to use histograms

  7. #7
    Join Date
    Feb 2001
    Posts
    119
    Thanks a Lot

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