EVENT                                                            TOTAL_WAITS TOTAL_TIMEOUTS TIME_WAITED AVERAGE_WAIT TIME_WAITED_MICRO   EVENT_ID WAIT_CLASS_ID WAIT_CLASS# WAIT_CLASS
---------------------------------------------------------------- ----------- -------------- ----------- ------------ ----------------- ---------- ------------- ----------- ----------------------------------------------------------------
log file switch completion                                               196             10        3390         17.3          33902312 3834950329    3290255840           2 Configuration
log file sync                                                         258891             14      134182         0.52        1341818537 1328744198    3386400367           5 Commit
db file sequential read                                              8073889              0      767440          0.1        7674399749 2652584166    1740759767           8 User I/O
db file scattered read                                              22309757              0     1153637         0.05       11536371092  506183215    1740759767           8 User I/O
db file single write                                                       7              0           6         0.88             61559 1307477558    1740759767           8 User I/O
db file parallel read                                                   7444              0       50066         6.73         500662788  834992820    1740759767           8 User I/O
direct path read                                                     2024315              0        1426            0          14263788 3926164927    1740759767           8 User I/O
direct path read temp                                                 165443              0          97            0            967235  861319509    1740759767           8 User I/O
direct path write                                                       9582              0           3            0             26953  885859547    1740759767           8 User I/O
direct path write temp                                                 54713              0          25            0            250575   38438084    1740759767           8 User I/O
enq: HW - contention                                                       2              0           1         0.28              5571 1645217925    3290255840           2 Configuration
enq: TX - row lock contention                                              2              0           1         0.27              5401  310662678    4217450380           1 Application
enq: TX - index contention                                                 2              0           3         1.26             25205 1035026728    3875070507           4 Concurrency
smon timer                                                             11991           8889   263676750     21989.55     2636767501611 1403232821    2723168908           6 Idle
latch: In memory undo latch                                                1              0           1          1.1             10970 1394127552    3875070507           4 Concurrency
latch: row cache objects                                                 190              0         377         1.98           3770220 1117386924    3875070507           4 Concurrency
row cache lock                                                             9              0           6         0.65             58386 1714089451    3875070507           4 Concurrency
latch: shared pool                                                      1518              0         658         0.43           6575421 2696347763    3875070507           4 Concurrency
latch: library cache                                                    3819              0        5466         1.43          54655543  589947255    3875070507           4 Concurrency
latch: library cache lock                                                 29              0          67         2.32            672239 2032051689    3875070507           4 Concurrency
latch: library cache pin                                                  72              0          16         0.22            159017 1242501677    3875070507           4 Concurrency

解决方案 »

  1.   

    EVENT                                                            TOTAL_WAITS TOTAL_TIMEOUTS TIME_WAITED AVERAGE_WAIT TIME_WAITED_MICRO   EVENT_ID WAIT_CLASS_ID WAIT_CLASS# WAIT_CLASS
    ---------------------------------------------------------------- ----------- -------------- ----------- ------------ ----------------- ---------- ------------- ----------- ----------------------------------------------------------------
    library cache pin                                                        147              0         956          6.5           9558385 2802704141    3875070507           4 Concurrency
    library cache lock                                                         9              0         221        24.52           2206563  916468430    3875070507           4 Concurrency
    library cache load lock                                                   18              0         117          6.5           1169884 2952162927    3875070507           4 Concurrency
    virtual circuit status                                                 93058          93057   271717253      2919.87     2717172532946 3618703989    2723168908           6 Idle
    dispatcher timer                                                       46529          46529   270785714      5819.72     2707857144553 4090013609    2723168908           6 Idle
    jobq slave wait                                                       864396         860477   252584082       292.21     2525840822284  782339817    2723168908           6 Idle
    SQL*Net message to client                                          235863566              0       52118            0         521179082 2067390145    2000153315           7 Network
    SQL*Net more data to client                                         24008406              0      160353         0.01        1603528679  554161347    2000153315           7 Network
    SQL*Net message from client                                        235863450              0  1435262339         6.09    14352623388442 1421975091    2723168908           6 Idle
    SQL*Net more data from client                                        1742076              0        3172            0          31722017 3530226808    2000153315           7 Network
    SQL*Net break/reset to client                                            754              0          65         0.09            651785 1963888671    4217450380           1 Application
    Streams AQ: waiting for time management or cleanup tasks               35519          21609   238233186       6707.2     2382331861545 3702640206    2723168908           6 Idle
    Streams AQ: qmn coordinator idle wait                                 200825         101539   271787516      1353.35     2717875161090  989870553    2723168908           6 Idle
    Streams AQ: qmn slave idle wait                                        99551              0   271784981      2730.11     2717849809326 1830121438    2723168908           6 Idle
    latch free                                                              2089              0        3444         1.65          34440432 3474287957    1893977003           0 Other
    latch: session allocation                                                213              0         259         1.22           2590377 2900750527    1893977003           0 Other
    enq: PR - contention                                                       3              0          13         4.42            132526 3733307663    1893977003           0 Other
    latch: messages                                                           34              0           0         0.01              4292 1973577887    1893977003           0 Other
    rdbms ipc reply                                                         2268              0        1300         0.57          13002368 2587381521    1893977003           0 Other
    latch: enqueue hash chains                                                34              0           7         0.21             72842 1847483002    1893977003           0 Other
    reliable message                                                         123              0          14         0.11            136041  906644781    1893977003           0 OtherEVENT                                                            TOTAL_WAITS TOTAL_TIMEOUTS TIME_WAITED AVERAGE_WAIT TIME_WAITED_MICRO   EVENT_ID WAIT_CLASS_ID WAIT_CLASS# WAIT_CLASS
    ---------------------------------------------------------------- ----------- -------------- ----------- ------------ ----------------- ---------- ------------- ----------- ----------------------------------------------------------------
    SGA: allocation forcing component growth                                 114             20         116         1.02           1160252 3493282803    1893977003           0 Other
    control file heartbeat                                                     1              1         390        390.4           3904002   40893507    1893977003           0 Other
    enq: CF - contention                                                       2              0          88         43.8            875970 1494394835    1893977003           0 Other
    buffer exterminate                                                        93             59        6839        73.54          68388701 2332720660    1893977003           0 Other
    latch: cache buffers lru chain                                          1518              0         816         0.54           8162938 3401628503    1893977003           0 Other
    latch: checkpoint queue latch                                              1              0           0            0                31   22066106    1893977003           0 Other
    latch: object queue header operation                                      59              0           9         0.16             94345  295718413    1893977003           0 Other
    LGWR wait for redo copy                                                22318           1442        2393         0.11          23933818 4266849434    1893977003           0 Other
    latch: redo allocation                                                   491              0          41         0.08            413198  266850936    1893977003           0 Other
    latch: undo global data                                                    6              0          16         2.67            160203 2221529869    1893977003           0 Other
    instance state change                                                      2              0           0         0.13              2543 1525267497    1893977003           0 Other
    kksfbc child completion                                                    1              1           5         4.79             47867    2679325    1893977003           0 Other
    Streams AQ: qmn coordinator waiting for slave to start                     2              1         489       244.35           4887078 1565566389    1893977003           0 Other
    enq: JS - queue lock                                                      12              0          57         4.78            573235  306423829    1893977003           0 Other76 rows selectedSQL>