Estimating the network delay time of the redo transfer - DataGuard

Hi
I have 10.2.0.4 Dataguard setup on a a Solaris server in LA where the primary is in NYC
I am operating with real time redo apply, no delay
I want a way to estimate the network delay of the redo transfer between LA and NYC.
the v$recovery_progress will give me the active apply time which is the apply itsef ( fast)
but my bottleneck is our network .
Is there an easy way to determine the network delay time ?
thanks
Orna

Is "transport lag" in v$dataguard_stats any help to you?
NAME                             VALUE            UNIT                           TIME_COMPUTED
apply finish time                +00 00:00:00.0   day(2) to second(1) interval   25-JUN-2009 16:41:41
apply lag                        +00 00:00:00     day(2) to second(0) interval   25-JUN-2009 16:41:41
estimated startup time           9                second                         25-JUN-2009 16:41:41
standby has been open            N                                               25-JUN-2009 16:41:41
transport lag                    +00 00:00:00     day(2) to second(0) interval   25-JUN-2009 16:41:41Edited by: user600286 on 25-Jun-2009 08:52

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            Executes:            2,909.4                3.5
           Rollbacks:                0.0                0.0            
    Instance 2:
    Load Profile              Per Second    Per Transaction   Per Exec   Per Call
    ~~~~~~~~~~~~         ---------------    --------------- ---------- ----------
          DB Time(s):                5.5                0.0       0.00       0.00
           DB CPU(s):                1.4                0.0       0.00       0.00
           Redo size:        3,527,737.9            3,705.7
       Logical reads:           29,916.5               31.4
       Block changes:            8,893.7                9.3
      Physical reads:                0.2                0.0
    Physical writes:              194.0                0.2
          User calls:            7,742.8                8.1
              Parses:              262.7                0.3
         Hard parses:               99.5                0.1
    W/A MB processed:                0.4                0.0
              Logons:                1.0                0.0
            Executes:            2,822.5                3.0
           Rollbacks:                0.0                0.0
        Transactions:              952.0
    Instance 1:
    Top 5 Timed Foreground Events
    ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
                                                               Avg
                                                              wait   % DB
    Event                                 Waits     Time(s)   (ms)   time Wait Class
    DB CPU                                            1,043          21.5
    log file sync                       815,334         915      1   18.9 Commit
    gc buffer busy acquire              323,759         600      2   12.4 Cluster
    gc current block busy               215,132         585      3   12.1 Cluster
    enq: TX - row lock contention        23,284         264     11    5.5 Applicatio
    Instance 2:
    Top 5 Timed Foreground Events
    ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
                                                               Avg
                                                              wait   % DB
    Event                                 Waits     Time(s)   (ms)   time Wait Class
    DB CPU                                            1,340          24.9
    log file sync                       942,962       1,125      1   20.9 Commit
    gc buffer busy acquire              377,812         594      2   11.0 Cluster
    gc current block busy               211,270         488      2    9.1 Cluster
    enq: TX - row lock contention        30,094         299     10    5.5 Applicatio
    Instance 1:
    Operating System Statistics        Snaps: 1016-1017
    -> *TIME statistic values are diffed.
       All others display actual values.  End Value is displayed if different
    -> ordered by statistic type (CPU Use, Virtual Memory, Hardware Config), Name
    Statistic                                  Value        End Value
    AVG_BUSY_TIME                             17,451
    AVG_IDLE_TIME                             81,268
    AVG_IOWAIT_TIME                                1
    AVG_SYS_TIME                               6,854
    AVG_USER_TIME                             10,548
    BUSY_TIME                                420,031
    IDLE_TIME                              1,951,741
    IOWAIT_TIME                                  288
    SYS_TIME                                 165,709
    USER_TIME                                254,322
    LOAD                                           3                6
    OS_CPU_WAIT_TIME                         523,000
    RSRC_MGR_CPU_WAIT_TIME                         0
    VM_IN_BYTES                              311,280
    VM_OUT_BYTES                          75,862,008
    PHYSICAL_MEMORY_BYTES             62,813,896,704
    NUM_CPUS                                      24
    NUM_CPU_CORES                                  6
    NUM_LCPUS                                     24
    NUM_VCPUS                                      6
    GLOBAL_RECEIVE_SIZE_MAX                4,194,304
    GLOBAL_SEND_SIZE_MAX                   4,194,304
    TCP_RECEIVE_SIZE_DEFAULT                  16,384
    TCP_RECEIVE_SIZE_MAX      9.2233720368547758E+18
    TCP_RECEIVE_SIZE_MIN                       4,096
    TCP_SEND_SIZE_DEFAULT                     16,384
    TCP_SEND_SIZE_MAX         9.2233720368547758E+18
    TCP_SEND_SIZE_MIN                          4,096
    Operating System Statistics - Detail  Snaps: 1016-101
    Snap Time           Load    %busy    %user     %sys    %idle  %iowait
    22-Aug 11:33:55      2.7      N/A      N/A      N/A      N/A      N/A
    22-Aug 11:50:23      6.2     17.7     10.7      7.0     82.3      0.0
    Instance 2:
    Operating System Statistics         Snaps: 1016-1017
    -> *TIME statistic values are diffed.
       All others display actual values.  End Value is displayed if different
    -> ordered by statistic type (CPU Use, Virtual Memory, Hardware Config), Name
    Statistic                                  Value        End Value
    AVG_BUSY_TIME                             11,823
    AVG_IDLE_TIME                             86,923
    AVG_IOWAIT_TIME                                0
    AVG_SYS_TIME                               4,791
    AVG_USER_TIME                              6,991
    BUSY_TIME                                475,210
    IDLE_TIME                              3,479,382
    IOWAIT_TIME                                  410
    SYS_TIME                                 193,602
    USER_TIME                                281,608
    LOAD                                           3                6
    OS_CPU_WAIT_TIME                         615,400
    RSRC_MGR_CPU_WAIT_TIME                         0
    VM_IN_BYTES                               16,360
    VM_OUT_BYTES                          72,699,920
    PHYSICAL_MEMORY_BYTES             62,813,896,704
    NUM_CPUS                                      40
    NUM_CPU_CORES                                 10
    NUM_LCPUS                                     40
    NUM_VCPUS                                     10
    GLOBAL_RECEIVE_SIZE_MAX                4,194,304
    GLOBAL_SEND_SIZE_MAX                   4,194,304
    TCP_RECEIVE_SIZE_DEFAULT                  16,384
    TCP_RECEIVE_SIZE_MAX      9.2233720368547758E+18
    TCP_RECEIVE_SIZE_MIN                       4,096
    TCP_SEND_SIZE_DEFAULT                     16,384
    TCP_SEND_SIZE_MAX         9.2233720368547758E+18
    TCP_SEND_SIZE_MIN                          4,096
    Operating System Statistics - Detail Snaps: 1016-101
    Snap Time           Load    %busy    %user     %sys    %idle  %iowait
    22-Aug 11:33:55      2.6      N/A      N/A      N/A      N/A      N/A
    22-Aug 11:50:23      5.6     12.0      7.1      4.9     88.0      0.0
              -------------------------------------------------------------

  • The redo apply seems not work

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