Cpu time is high

Question

In the below statspack report CPU time is very high.....how to voercome this prole....is there any other problem also pls suggest me.
OS:SUN Solris
DB=Oracle 9.2.0.6
STATSPACK report for
DB Name         DB Id    Instance     Inst Num Release     Cluster Host
ICAI          1372079993 icai12              2 9.2.0.6.0   YES     icai2
              Snap Id     Snap Time      Sessions Curs/Sess Comment
Begin Snap:        11 12-Sep-08 13:55:54      931       7.2
  End Snap:        12 12-Sep-08 17:04:24      623       7.4
   Elapsed:              188.50 (mins)
Cache Sizes (end)
~~~~~~~~~~~~~~~~~
               Buffer Cache:     2,512M      Std Block Size:          8K
           Shared Pool Size:       608M          Log Buffer:        977K
Load Profile
~~~~~~~~~~~~                            Per Second       Per Transaction
                  Redo size:              1,026.01              8,844.68
              Logical reads:              4,270.92             36,817.17
              Block changes:                  5.28                 45.55
             Physical reads:                243.47              2,098.82
            Physical writes:                  0.41                  3.52
                 User calls:                 37.58                323.93
                     Parses:                  5.82                 50.19
                Hard parses:                  0.31                  2.65
                      Sorts:                  2.59                 22.29
                     Logons:                  0.07                  0.58
                   Executes:                 17.69                152.49
               Transactions:                  0.12
  % Blocks changed per Read:    0.12    Recursive Call %:     41.69
Rollback per transaction %:   25.61       Rows per Sort:    100.12
Instance Efficiency Percentages (Target 100%)
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
            Buffer Nowait %:  100.00       Redo NoWait %:    100.00
            Buffer  Hit   %:   94.30    In-memory Sort %:    100.00
            Library Hit   %:   98.28        Soft Parse %:     94.72
         Execute to Parse %:   67.09         Latch Hit %:     99.93
Parse CPU to Parse Elapsd %:   54.11     % Non-Parse CPU:     99.75
Shared Pool Statistics        Begin   End
             Memory Usage %:   90.81   89.84
    % SQL with executions>1:   51.49   48.75
  % Memory for SQL w/exec>1:   52.77   51.31
Top 5 Timed Events
~~~~~~~~~~~~~~~~~~                                                     % Total
Event                                               Waits    Time (s) Ela Time
CPU time                                                       20,029    75.44
global cache cr request                           873,734       1,904     7.17
db file scattered read                            346,161       1,577     5.94
db file sequential read                           173,543       1,558     5.87
db file parallel read                              14,902         616     2.32

Answer 1

Sorry for being late....
I think there is only one or two query causing problem....is it true that if there is only one or two query causing problem that is if the query is taking near about 30% elaspsed time cpu does it have a impact on the performance of the db......
SQL ordered by Reads for DB: ICAI  Instance: icai12  Snaps: 11 -12
-> End Disk Reads Threshold:      1000
                                                     CPU      Elapsd
Physical Reads  Executions  Reads per Exec %Total Time (s)  Time (s) Hash Value
      1,097,317           11       99,756.1   39.8   386.68   1778.96 1585476974
SELECT NVL(TO_CHAR(A.DEH_APPLICATION_DT,'DD/MM/RRRR'), NULL ),NV
L(TO_CHAR(A.DEH_DT,'DD/MM/RRRR'), NULL )   FROM OT_DAK_ENTRY_HEA
D A,OT_DAK_ENTRY_DETL B,OT_FIRM_NAME_APPR_HEAD C  WHERE A.DEH_SY
S_ID = B.DED_DEH_SYS_ID  AND B.DED_DAK_SYS_ID = C.FNAH_DED_SYS_I
D  AND C.FNAH_SYS_ID =  (SELECT MAX(B.FNAH_SYS_ID)   FROM OT_FIR
        407,436            6       67,906.0   14.8   122.60    720.09 1414719916
UPDATE OM_MEM_REG_HEAD SET MRH_MRN=:b1 WHERE MRH_SYS_ID = :b2
        407,436            6       67,906.0   14.8   122.54    720.00 1414796677
UPDATE OT_DAK_ACTV_HISTORY SET DAH_REG_NO = :B1 WHERE DAH_REG_NO
= :B3 AND TRUNC(DAH_ACTV_ED_DT ) <= TRUNC(:B2 ) AND DAH_ACTV_ST
ATUS = 'C'
        288,612           23       12,548.3   10.5    61.05    312.13 3146526985
Module: JDBC Thin Client
BEGIN PACK_INSERT_INTERNET_TEST.IT_INSERT_MEM_ADD_CHG_REQ(:1,:2,
:3,:4,:5,:6,:7,:8,:9,:10,:11,:12,:13); END;
        110,742            1      110,742.0    4.0    35.17    172.63 1517630850
SELECT NVL(TO_CHAR(A.DEH_APPLICATION_DT,'DD/MM/RRRR'), NULL ),NV
L(TO_CHAR(A.DEH_DT,'DD/MM/RRRR'), NULL )   FROM OT_DAK_ENTRY_HEA
D A,OT_DAK_ENTRY_DETL B,OM_FIRM_OPENCLOSE_SO C  WHERE A.DEH_SYS_
ID = B.DED_DEH_SYS_ID  AND B.DED_DAK_SYS_ID = C.FSO_DED_SYS_ID
AND C.FSO_SYS_ID =  (SELECT MAX(B.FSO_SYS_ID)   FROM OM_FIRM_OPE
         90,155          104          866.9    3.3   255.47    986.07 4142254844
SELECT LTRIM(RTRIM(DECODE(TIT_NAME,'MR.','CA.','MS.','CA.','MRS.
','CA.') || ' '  || MRH_FIRST_NAME  || ' '  || MRH_MIDDLE_NAME
|| ' '  || MRH_SUR_NAME  || ' '  || DECODE(MRH_APPR_UID, NULL ,
NULL ,DECODE(MRH_MEM_STATUS,2, NULL ,DECODE(MRH_FELLOW_STATUS_YN
,'Y','FCA','ACA')))  || DECODE(MRH_RESI_STATUS,'A','
         82,002            1       82,002.0    3.0   121.61    459.95 2335688323
SELECT 'X'   FROM OV_APPROVED_DOCUMENTS  WHERE APPR_DOC_TXN_CODE
= :b1  AND APPR_DOC_NO = :b2  AND EXISTS  (SELECT 'X'   FROM OT
DAKENTRY_HEAD A,OT_DAK_ENTRY_DETL B,OM_DAK C  WHERE A.DEH_SYS_
ID = B.DED_DEH_SYS_ID  AND A.DEH_SYS_ID = APPR_DOC_SYS_ID  AND C
.DAK_TXN_CODE = :b3  AND C.DAK_CHANGE_TYPE IN ( 'F'  ) AND B.DED
         65,494           12        5,457.8    2.4    23.18    137.86 3958290687
SELECT MEP_DOC_STATUS   FROM OT_MEM_EMPLOYMENT  WHERE MEP_REF_SY
S_ID = :b1  AND MEP_REF_FROM = 'MG'
         60,028            3       20,009.3    2.2    12.59    157.78 2405844617
Module: JDBC Thin Client
INSERT INTO IT_ADD_DTL (ADD_DT_ACK_NO, ADD_DT_SR_NO, ADD_DT_MRN,
ADD_DT_TYPE, ADD_DT_LINE1, ADD_DT_LINE2, ADD_DT_LINE3, ADD_DT_L
INE4, ADD_DT_CITY_CODE, ADD_DT_OTHER_CITY, ADD_DT_PIN_CODE, ADD_
DT_TEL, ADD_DT_EMAIL, ADD_DT_OP_DT, ADD_DT_CL_DT, ADD_DT_CL_YN,
ADD_DT_INCHG_MRN, ADD_CORR_DT_LINE1, ADD_CORR_DT_LINE2, ADD_CORR
         60,022            6       10,003.7    2.2    12.31    155.97 3242469259
SQL ordered by Reads for DB: ICAI  Instance: icai12  Snaps: 11 -12
-> End Disk Reads Threshold:      1000
SQL ordered by Gets for DB: ICAI  Instance: icai12  Snaps: 11 -12
-> End Buffer Gets Threshold:     10000
-> Note that resources reported for PL/SQL includes the resources used by
   all SQL statements called within the PL/SQL code.  As individual SQL
   statements are also reported, it is possible and valid for the summed
   total % to exceed 100
                                                     CPU      Elapsd
  Buffer Gets    Executions  Gets per Exec  %Total Time (s)  Time (s) Hash Value
     12,271,784           58      211,582.5   25.4   484.35   1453.46   17574787
SELECT /*+ INDEX (OM_COURSE_FEE OCF_CFC_CODE)  */DISTINCT CF_COU
RSE_CODE   FROM OM_COURSE_FEE,OT_STUDENT_FEE_COL_HEAD,OT_STUDENT
FEECOL_DETL  WHERE SFCH_SYS_ID = SFCD_SFCH_SYS_ID  AND SFCD_FE
E_TYPE_CODE = CF_TYPE_CODE  AND CF_COURSE_CODE IN ( 'PE1','PE2',
'CCT','CPT'  ) AND SFCH_TXN_CODE = :b1  AND SFCD_SUBSCRBE_JOURNA
      7,064,924          120       58,874.4   14.6   102.74    226.01 3102119461
SELECT ROWID,AR_DT,AR_TXN_CODE,AR_NO,AR_AMD_NO,AR_REF_FROM,AR_RE
F_TXN_CODE,AR_REF_NO,AR_DAK_CODE,AR_DED_SYS_ID,AR_COMP_CODE,AR_A
CNT_YR,AR_AMD_DT,AR_AMD_UID,AR_AMD_RES_CODE,AR_REF_SYS_ID,AR_STU
D_SRN,AR_APPL_DT,AR_ISSUE_DT,AR_ENROL_FRM_COURSE,AR_ENROL_DT,AR_
JOURNAL_YN,AR_TYPE,AR_TITLE,AR_VACANCY_CODE,AR_MRH_MRN,AR_INDUST