Some querry please......

hello Oracle gurus please try to help me with these query--------
1) A query to find out which file has had the most physical read activity?
2) An SQL statement to change the retention time of your undo tablespace to 10 mins?
your help will be really appreciated

Duplicate post!
Duplicate post!
Duplicate post!
query to read physical.....................
Once again, duplicate post.

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    -- Assume the following scenario, we are validating dept (master) and emp(child) which are my temporary tables and updating the status back to
    -- dept ( for all the validation errors, even if we have any validation at child  it has to update the header record with error message),
    -- upon successful validation insert the data into dept3, and emp3 interms of batches
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    step - 1:
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           (DEPTNO NUMBER(6) primary key,
            DNAME VARCHAR2(25),
            LOC VARCHAR2(23),
            batch_id number );
    INSERT INTO DEPT VALUES (10, 'ACCOUNTING', 'NEW YORK', null);
    INSERT INTO DEPT VALUES (20, 'RESEARCH',   'DALLAS', null);
    INSERT INTO DEPT VALUES (30, 'SALES',      'CHICAGO', null);
    INSERT INTO DEPT VALUES (40, 'OPERATIONS', 'BOSTON', null);
    step - 2:
    declare
    begin
    for i in 1..50000 loop
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    end loop;
    commit;
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    when others then
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    end;
    step - 3:
    create sequence emp_seq start with 1 increment by 1;
    step - 4:
    CREATE TABLE EMP
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            JOB VARCHAR2(20),
            MGR NUMBER(4),
            HIREDATE DATE,
            SAL NUMBER(7, 2),
            COMM NUMBER(7, 2),
            DEPTNO NUMBER(6));
    INSERT INTO EMP VALUES
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    INSERT INTO EMP VALUES
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    INSERT INTO EMP VALUES
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    INSERT INTO EMP VALUES
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            TO_DATE('2-APR-1981', 'DD-MON-YYYY'),  2975, NULL, 20);
    INSERT INTO EMP VALUES
            (7654, 'MARTIN', 'SALESMAN',  7698,
            TO_DATE('28-SEP-1981', 'DD-MON-YYYY'), 1250, 1400, 30);
    INSERT INTO EMP VALUES
            (7698, 'BLAKE',  'MANAGER',   7839,
            TO_DATE('1-MAY-1981', 'DD-MON-YYYY'),  2850, NULL, 30);
    INSERT INTO EMP VALUES
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            TO_DATE('9-JUN-1981', 'DD-MON-YYYY'),  2450, NULL, 10);
    INSERT INTO EMP VALUES
            (7788, 'SCOTT',  'ANALYST',   7566,
            TO_DATE('09-DEC-1982', 'DD-MON-YYYY'), 3000, NULL, 20);
    INSERT INTO EMP VALUES
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            TO_DATE('17-NOV-1981', 'DD-MON-YYYY'), 5000, NULL, 10);
    INSERT INTO EMP VALUES
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            TO_DATE('8-SEP-1981', 'DD-MON-YYYY'),  1500, NULL, 30);
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            TO_DATE('12-JAN-1983', 'DD-MON-YYYY'), 1100, NULL, 20);
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            TO_DATE('23-JAN-1982', 'DD-MON-YYYY'), 1300, NULL, 10);
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    declare
    cursor c1 is select * from dept;
    k number:=0;
    m number:=0;
    begin
    for i in  c1 loop
    k:=k+1;
    --dbms_output.put_line('k:'||k);
    --dbms_output.put_line('i.deptno:'||i.deptno);
    m:=0;
    for j in 1..5 loop
    m:=m+1;
    --dbms_output.put_line('m:'||m);
    --dbms_output.put_line('i.deptno:'||i.deptno);
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            (9000+emp_seq.nextval, 'SMITH'||'_'||emp_seq.currval,  'CLERK'||'_'||emp_seq.currval,     7902,
            TO_DATE('17-DEC-1980', 'DD-MON-YYYY'),  800, NULL, i.deptno);
    end loop;
    end loop;
    commit;
    exception
    when others then
    dbms_output.put_line('Exception occured:'||sqlerrm);
    end;
    step :-6
    create table dept3 as select * from dept where 1=2;
    create table emp3 as select * from emp where 1=2;
    alter table dept add object_id number;
    alter table dept add status varchar(20);
    alter table dept add err_msg varchar2(200);
    alter table emp add object_id number;
    -- I have not included the alter statements in the inital creation because i dont want them to insert into dept3 and emp3
    CREATE OR REPLACE
    PACKAGE test_b
    AS
      g_batch_id NUMBER;
      PROCEDURE emp_ins(
          p_EMPNO    NUMBER,
          p_ENAME    VARCHAR2,
          p_JOB      VARCHAR2,
          p_MGR      NUMBER,
          p_HIREDATE DATE,
          p_SAL      NUMBER,
          p_COMM     NUMBER,
          p_DEPTNO   NUMBER);
      PROCEDURE dept_ins(
          p_DEPTNO NUMBER,
          p_dname  VARCHAR2 ,
          p_LOC    VARCHAR2,
          p_batch  NUMBER);
      PROCEDURE validate_prc;
      PROCEDURE main;
    TYPE dept_t
    IS
      TABLE OF dept%ROWTYPE;
      hdr_tbl dept_t;
    TYPE emp_t
    IS
      TABLE OF emp%ROWTYPE;
      line_tbl emp_t;
    TYPE dept_i_t
    IS
      TABLE OF dept3%ROWTYPE;
      hdr_ins_tbl dept_i_t;
    TYPE emp_i_t
    IS
      TABLE OF emp3%ROWTYPE;
      line_ins_tbl emp_i_t;
    END;
    -- pacakge body
    CREATE OR REPLACE
    PACKAGE body test_b
    AS
    PROCEDURE emp_ins(
        p_EMPNO    NUMBER,
        p_ENAME    VARCHAR2,
        p_JOB      VARCHAR2,
        p_MGR      NUMBER,
        p_HIREDATE DATE,
        p_SAL      NUMBER,
        p_COMM     NUMBER,
        p_DEPTNO   NUMBER)
    IS
    BEGIN
      INSERT
      INTO EMP3
          EMPNO ,
          ENAME ,
          JOB ,
          MGR ,
          HIREDATE ,
          SAL ,
          COMM ,
          DEPTNO
        VALUES
          P_EMPNO ,
          P_ENAME ,
          P_JOB ,
          P_MGR ,
          P_HIREDATE ,
          P_SAL ,
          P_COMM ,
          P_DEPTNO
    EXCEPTION
    WHEN OTHERS THEN
      DBMS_OUTPUT.PUT_LINE('EXCEPTION AT EMP INSERT'||SQLERRM);
    END;
    PROCEDURE dept_ins
        p_DEPTNO NUMBER,
        p_dname  VARCHAR2 ,
        p_LOC    VARCHAR2,
        p_batch  NUMBER
    IS
    BEGIN
      INSERT
      INTO DEPT3
          DEPTNO ,
          DNAME ,
          LOC ,
          batch_id
        VALUES
          p_DEPTNO ,
          p_DNAME ,
          p_LOC ,
          p_batch
    EXCEPTION
    WHEN OTHERS THEN
      DBMS_OUTPUT.PUT_LINE('EXCEPTION AT DEPT INSERT'||SQLERRM);
    END ;
    PROCEDURE validate_prc
    IS
      CURSOR c1
      IS
        SELECT * FROM dept WHERE status IS NULL ;--AND rownum <25;
      CURSOR c2(p_dept NUMBER )
      IS
        SELECT * FROM emp WHERE deptno=p_dept;
      e_validation EXCEPTION;
    BEGIN
      OPEN c1;
      LOOP
        FETCH c1 BULK COLLECT INTO hdr_tbl limit 5000;
        SELECT emp_seq.nextval INTO g_batch_id FROM dual;
        EXIT
      WHEN hdr_tbl.count = 0;
        dbms_output.put_line('batch'||g_batch_id);
      END LOOP;
      CLOSE c1;
      dbms_output.put_line('C1 closed');
      --------- Loading data into the inv line table type -------------------------------
      FOR i IN 1 .. hdr_tbl.count
      LOOP
        dbms_output.put_line('started validation');
        -- do header level validations
        IF hdr_tbl(i).dname  IS NULL THEN
          hdr_tbl(i).status  := 'ERROR';
          hdr_tbl(i).err_msg :=',DNAME is null';
        END IF;
        OPEN c2(hdr_tbl(i).deptno);
        LOOP
          FETCH c2 BULK COLLECT INTO line_tbl;
          -- EXIT WHEN c2%NOTFOUND;
        END LOOP;
        CLOSE c2;
        FOR j IN 1 .. line_tbl.count
        LOOP
          -- do line validations
          IF line_tbl(j).ename IS NULL THEN
            hdr_tbl(i).status  := 'ERROR';
            hdr_tbl(i).err_msg :=',ENAME is null';
          END IF;
          BEGIN
            FORALL j IN line_tbl.FIRST .. line_tbl.LAST
            SAVE EXCEPTIONS
            UPDATE EMP
            SET object_id =3
              -- I have multiple columns to update based on validations
            WHERE deptno =hdr_tbl(i).deptno------------
            AND empno    =line_tbl (j).empno;
            COMMIT;
            line_tbl.DELETE;
            dbms_output.put_line( 'Successfully updated emp temp table.');
          EXCEPTION
          WHEN OTHERS THEN
            ROLLBACK;
            dbms_output.put_line( 'Error while updating line temp table. ' || sqlerrm );
            FOR j IN 1 .. sql%BULK_EXCEPTIONS.COUNT
            LOOP
              DBMS_OUTPUT.put_line(' occurred during line temp table updation ' || sql%BULK_EXCEPTIONS(i).ERROR_INDEX );
            END LOOP;
            raise e_validation;
          END;
        END LOOP; -- j
        --CLOSE c2;
        IF hdr_tbl(i).err_msg IS NULL THEN
          hdr_tbl (i).status  := 'VALID';
          hdr_tbl (i).err_msg := NULL;
        END IF;
        -- even if I have line validation failed I have to update header status and erorr msg
        BEGIN
          FORALL i IN hdr_tbl.FIRST .. hdr_tbl.LAST
          SAVE EXCEPTIONS
          UPDATE DEPT
          SET object_id =4,
            status      = hdr_tbl (i).status,
            err_msg     = hdr_tbl (i).err_msg
            --  batch_id =
            -- I have multiple columns to update based on validations
          WHERE deptno = hdr_tbl (i).deptno
          AND status  IS NULL; ------------
          COMMIT;
          hdr_tbl.DELETE;
          dbms_output.put_line( 'Successfully updated dept temp table.');
          --close c1;
        EXCEPTION
        WHEN OTHERS THEN
          ROLLBACK;
          dbms_output.put_line( 'Error while updating hdr temp table. ' || sqlerrm );
          FOR i IN 1 .. sql%BULK_EXCEPTIONS.COUNT
          LOOP
            DBMS_OUTPUT.put_line(' occurred during line temp table updation ' || sql%BULK_EXCEPTIONS(i).ERROR_INDEX );
          END LOOP;
          raise e_validation;
        END;
      END LOOP; --i
    EXCEPTION
    WHEN OTHERS THEN
      DBMS_OUTPUT.PUT_LINE('EXCEPTION AT validate'||SQLERRM);
    END ;
    PROCEDURE main
    IS
      CURSOR dept_ins_cur
      IS
        SELECT * FROM dept WHERE status='VALID';
      CURSOR emp_ins_cur(p_deptno NUMBER)
      IS
        SELECT * FROM emp WHERE deptno= p_deptno;
    BEGIN
      validate_prc;
      OPEN dept_ins_cur;
      LOOP
      FETCH dept_ins_cur BULK COLLECT INTO hdr_ins_tbl limit 1000
      EXIT
      WHEN dept_ins_cur%NOTFOUND;
      END LOOP;
      CLOSE dept_ins_cur;
      --------- Loading data into the inv line table type -------------------------------
      FOR i IN 1 .. hdr_tbl.count
      loop
      dept_ins(hdr_ins_tbl(i).deptno ,
      hdr_ins_tbl(i).DNAME ,
      hdr_ins_tbl(i).LOC , emp_seq.nextval);
      commit;
      OPEN emp_ins_cur(hdr_ins_tbl(i).deptno);
      LOOP
      FETCH emp_ins_cur BULK COLLECT INTO line_ins_tbl;
      --EXIT WHEN emp_ins_cur%NOTFOUND;
      END LOOP;
      CLOSE emp_ins_cur;
      for j in 1..line_ins_tbl.count loop
      emp_ins(line_ins_tbl(j).EMPNO ,
      line_ins_tbl(j).ENAME ,
      line_ins_tbl(j).JOB ,
      line_ins_tbl(j).MGR ,
      line_ins_tbl(j).HIREDATE ,
      line_ins_tbl(j).SAL ,
      line_ins_tbl(j).comm ,
      line_ins_tbl(j).DEPTNO );
      end loop;
      end loop;
      commit;
      BEGIN
      forall i IN hdr_ins_tbl.first .. hdr_ins_tbl.last
      SAVE exceptions
      UPDATE dept
      SET status   = 'INSERTED',
      err_msg  = null
      WHERE deptno=hdr_ins_tbl (i).deptno
      AND status   = 'VALID';
      COMMIT;
      hdr_ins_tbl.delete;
      dbms_output.put_line( 'inserting into temp tables.');
      EXCEPTION
      WHEN OTHERS THEN
      rollback;
      end;
    EXCEPTION
    WHEN OTHERS THEN
      dbms_output.put_line('exception in main' ||SQLERRM);
    END ;
    END;
    Thanks in advance...
    Message was edited by: 888025

    Hi, I have problem with the following pl/sql block
    Well, as Hoek already said, that is the understatement of the century.
    I can't be absolutely certain but I think that set of DDL and code that you posted has just about every possible error and design issue that there is! It would make an excellent addition to BluShadow's FAQs an an example of what NOT to do.
    I don't think it is even possible to 'fix the basics first' as Hoek suggested. IMHO the first step needs to be to create a functional requirements document (FRD) that explains in detail WHAT needs to be done. That doc should also contain info about how any errors/recovery/restart is to be handled. It is premature to try to implement ANY solution without first knowing what is needed functionally.
    Once the FRD is done you should do a walk-through based on your current architecture and sample data to make sure that the document really covers ALL of the steps that need to be performed and that it adequately explains how to deal with any processing or data issues that might arise.
    The next document you need is the TRD - Technical Requirements Doc that covers the different technical implementions of the FRD that can be done and the advantages/disadvantages of each.
    Then you can start working on a prototype.
    1. The DDL you posted isn't coherent - there are CREATE table statements and then later ALTER statements that add additional columns. There doesn't appear to be any reason for not including ALL of the columns in the CREATE table statement.
    2. You are using PL/SQL types instead of SQL types. That makes it impossible to use those types in SQL statements and makes it much more difficult to test since it is much easier to test a query in SQL (e.g. using sql*plus) that to embed the query in PL/SQL.
    3. You are defining the same type twice but giving it different names.
    TYPE dept_t
       IS
          TABLE OF dept%ROWTYPE
             INDEX BY binary_integer;
    TYPE dept_i_t
       IS
          TABLE OF dept%ROWTYPE
             INDEX BY binary_integer;
    Those are both based on the same DEPT table! Why the duplication?
    Also you are using associative arrays instead of just using nested tables. Get rid of the INDEX BY clause.
    4. You have some serious architectural and data model issues
    -- Assume the following scenario, we are validating dept (master) and emp(child) which are my temporary tables and updating the status back to
    -- dept ( for all the validation errors, even if we have any validation at child  it has to update the header record with error message),
    Why would you do that? You say 'it has to update the header record ...'. Says who? That is just one indication that you are trying to implement a 'solution' before you have adequately defined the 'problem'.
    Typically you would NOT alter any of the data tables; any validation errors/issues would get inserted into a table specifically designed to hold/log those issues. That table would contain key field values to correlate with the source of the error.
    Those 'master' and 'child' entities are two SEPARATE things. Issues with a 'master' row have NOTHING to do with any possible child rows.
    And issues with a 'child' row have NOTHING to do with any possible master rows. The ONLY connection between 'child' and 'master' is the foreign key that correlates them.
    So you don't necessarily have to validate the 'child' rows in sync with their 'master' row. In many cases you would have a procedure that performs validation of the entire set of 'master' rows and log those issues/problems. You would use a different procedure to validate the entire set of 'child' rows and log their issues.
    Those validation procedures can often work with ALL of the data using SQL statements instead of bulk processing.
    5. You are using loop constructs that are not valid for the type of processing you are using
    LOOP
        FETCH c1 BULK COLLECT INTO hdr_tbl;
        EXIT
      WHEN c1%NOTFOUND;
      END LOOP;
    There can be NO exit since the bulk collect with either get EVERYTHING or NOTHING. Possibly that is just a holdover from your attempt to use the LIMIT clause but you removed that clause from the FETCH; I don't know.
    There is so much wrong with what you posted it is really rather pointless to try to 'fix' it.
    I suggest you start over and clarify and DOCUMENT the actual requirements without prejudice about the solution that someone seems to want to force on you.

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