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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logs
BR0001I ******************************____________________
BR0202I Saving /oracle/ECQ/sapdata2/sr3700_7/sr3700.data7
BR0203I to /oracle/ECQ/sapbackup/beemiuvh/sr3700.data7 ...
#FILE..... /oracle/ECQ/sapdata2/sr3700_7/sr3700.data7
#SAVED.... /oracle/ECQ/sapbackup/beemiuvh/sr3700.data7 #1/29
BR0280I BRBACKUP time stamp: 2010-11-03 20.01.36
BR0063I 29 of 45 files processed - 92344.227 MB of 147448.352 MB done
BR0204I Percentage done: 62.63%, estimated end time: 20:20
BR0001I *******************************___________________
BR0202I Saving /oracle/ECQ/sapdata2/sr3700_8/sr3700.data8
BR0203I to /oracle/ECQ/sapbackup/beemiuvh/sr3700.data8 ...
#FILE..... /oracle/ECQ/sapdata2/sr3700_8/sr3700.data8
#SAVED.... /oracle/ECQ/sapbackup/beemiuvh/sr3700.data8 #1/30
BR0280I BRBACKUP time stamp: 2010-11-03 20.03.34
BR0063I 30 of 45 files processed - 98044.234 MB of 147448.352 MB done
BR0204I Percentage done: 66.49%, estimated end time: 20:20
BR0001I *********************************_________________
BR0202I Saving /oracle/ECQ/sapdata3/sr3700_10/sr3700.data10
BR0203I to /oracle/ECQ/sapbackup/beemiuvh/sr3700.data10 ...
#FILE..... /oracle/ECQ/sapdata3/sr3700_10/sr3700.data10
#SAVED.... /oracle/ECQ/sapbackup/beemiuvh/sr3700.data10 #1/31
BR0280I BRBACKUP time stamp: 2010-11-03 20.04.51
BR0063I 31 of 45 files processed - 102064.242 MB of 147448.352 MB done
BR0204I Percentage done: 69.22%, estimated end time: 20:20
BR0001I ***********************************_______________
BR0202I Saving /oracle/ECQ/sapdata3/sr3700_11/sr3700.data11
BR0203I to /oracle/ECQ/sapbackup/beemiuvh/sr3700.data11 ...
#FILE..... /oracle/ECQ/sapdata3/sr3700_11/sr3700.data11
#SAVED.... /oracle/ECQ/sapbackup/beemiuvh/sr3700.data11 #1/32
BR0280I BRBACKUP time stamp: 2010-11-03 20.06.09
BR0063I 32 of 45 files processed - 106024.250 MB of 147448.352 MB done
BR0204I Percentage done: 71.91%, estimated end time: 20:20
BR0001I ************************************______________
BR0202I Saving /oracle/ECQ/sapdata3/sr3700_12/sr3700.data12
BR0203I to /oracle/ECQ/sapbackup/beemiuvh/sr3700.data12 ...
#FILE..... /oracle/ECQ/sapdata3/sr3700_12/sr3700.data12
#SAVED.... /oracle/ECQ/sapbackup/beemiuvh/sr3700.data12 #1/33
BR0280I BRBACKUP time stamp: 2010-11-03 20.07.27
BR0063I 33 of 45 files processed - 110024.258 MB of 147448.352 MB done
BR0204I Percentage done: 74.62%, estimated end time: 20:20
BR0001I *************************************_____________
BR0202I Saving /oracle/ECQ/sapdata3/sr3700_9/sr3700.data9
BR0203I to /oracle/ECQ/sapbackup/beemiuvh/sr3700.data9 ...
#FILE..... /oracle/ECQ/sapdata3/sr3700_9/sr3700.data9
#SAVED.... /oracle/ECQ/sapbackup/beemiuvh/sr3700.data9 #1/34
BR0280I BRBACKUP time stamp: 2010-11-03 20.08.45
BR0063I 34 of 45 files processed - 114124.266 MB of 147448.352 MB done
BR0204I Percentage done: 77.40%, estimated end time: 20:20
BR0001I ***************************************___________
BR0202I Saving /oracle/ECQ/sapdata4/sr3700_13/sr3700.data13
BR0203I to /oracle/ECQ/sapbackup/beemiuvh/sr3700.data13 ...
#FILE..... /oracle/ECQ/sapdata4/sr3700_13/sr3700.data13
#SAVED.... /oracle/ECQ/sapbackup/beemiuvh/sr3700.data13 #1/35
BR0280I BRBACKUP time stamp: 2010-11-03 20.10.02
BR0063I 35 of 45 files processed - 118284.273 MB of 147448.352 MB done
BR0204I Percentage done: 80.22%, estimated end time: 20:19
BR0001I ****************************************__________
BR0202I Saving /oracle/ECQ/sapdata4/sr3700_14/sr3700.data14
BR0203I to /oracle/ECQ/sapbackup/beemiuvh/sr3700.data14 ...
#FILE..... /oracle/ECQ/sapdata4/sr3700_14/sr3700.data14
#SAVED.... /oracle/ECQ/sapbackup/beemiuvh/sr3700.data14 #1/36
BR0280I BRBACKUP time stamp: 2010-11-03 20.11.30
BR0063I 36 of 45 files processed - 122764.281 MB of 147448.352 MB done
BR0204I Percentage done: 83.26%, estimated end time: 20:19
BR0001I ******************************************________
BR0202I Saving /oracle/ECQ/sapdata4/sr3700_15/sr3700.data15
BR0203I to /oracle/ECQ/sapbackup/beemiuvh/sr3700.data15 ...
#FILE..... /oracle/ECQ/sapdata4/sr3700_15/sr3700.data15
#SAVED.... /oracle/ECQ/sapbackup/beemiuvh/sr3700.data15 #1/37
BR0280I BRBACKUP time stamp: 2010-11-03 20.12.58
BR0063I 37 of 45 files processed - 127124.289 MB of 147448.352 MB done
BR0204I Percentage done: 86.22%, estimated end time: 20:19
BR0001I *******************************************_______
BR0202I Saving /oracle/ECQ/sapdata4/sr3700_16/sr3700.data16
BR0203I to /oracle/ECQ/sapbackup/beemiuvh/sr3700.data16 ...
#FILE..... /oracle/ECQ/sapdata4/sr3700_16/sr3700.data16
#SAVED.... /oracle/ECQ/sapbackup/beemiuvh/sr3700.data16 #1/38
BR0280I BRBACKUP time stamp: 2010-11-03 20.14.15
BR0063I 38 of 45 files processed - 131284.297 MB of 147448.352 MB done
BR0204I Percentage done: 89.04%, estimated end time: 20:19
BR0001I *********************************************_____
BR0202I Saving /oracle/ECQ/sapdata4/sr3700_17/sr3700.data17
BR0203I to /oracle/ECQ/sapbackup/beemiuvh/sr3700.data17 ...
#FILE..... /oracle/ECQ/sapdata4/sr3700_17/sr3700.data17
#SAVED.... /oracle/ECQ/sapbackup/beemiuvh/sr3700.data17 #1/39
BR0280I BRBACKUP time stamp: 2010-11-03 20.15.23
BR0063I 39 of 45 files processed - 135380.305 MB of 147448.352 MB done
BR0204I Percentage done: 91.82%, estimated end time: 20:19
BR0001I **********************************************____
BR0202I Saving /oracle/ECQ/sapdata4/sr3700_18/sr3700.data18
BR0203I to /oracle/ECQ/sapbackup/beemiuvh/sr3700.data18 ...
#FILE..... /oracle/ECQ/sapdata4/sr3700_18/sr3700.data18
#SAVED.... /oracle/ECQ/sapbackup/beemiuvh/sr3700.data18 #1/40
BR0280I BRBACKUP time stamp: 2010-11-03 20.15.40
BR0063I 40 of 45 files processed - 136404.312 MB of 147448.352 MB done
BR0204I Percentage done: 92.51%, estimated end time: 20:19
BR0001I **********************************************____
BR0202I Saving /oracle/ECQ/sapdata1/sr3usr_1/sr3usr.data1
BR0203I to /oracle/ECQ/sapbackup/beemiuvh/sr3usr.data1 ...
#FILE..... /oracle/ECQ/sapdata1/sr3usr_1/sr3usr.data1
#SAVED.... /oracle/ECQ/sapbackup/beemiuvh/sr3usr.data1 #1/41
BR0280I BRBACKUP time stamp: 2010-11-03 20.15.44
BR0063I 41 of 45 files processed - 136424.320 MB of 147448.352 MB done
BR0204I Percentage done: 92.52%, estimated end time: 20:19
BR0001I **********************************************____
BR0202I Saving /oracle/ECQ/sapdata3/undo_1/undo.data1
BR0203I to /oracle/ECQ/sapbackup/beemiuvh/undo.data1 ...
#FILE..... /oracle/ECQ/sapdata3/undo_1/undo.data1
#SAVED.... /oracle/ECQ/sapbackup/beemiuvh/undo.data1 #1/42
BR0280I BRBACKUP time stamp: 2010-11-03 20.18.02
BR0063I 42 of 45 files processed - 145284.328 MB of 147448.352 MB done
BR0204I Percentage done: 98.53%, estimated end time: 20:18
BR0001I *************************************************_
BR0202I Saving /oracle/ECQ/sapdata1/sysaux_1/sysaux.data1
BR0203I to /oracle/ECQ/sapbackup/beemiuvh/sysaux.data1 ...
#FILE..... /oracle/ECQ/sapdata1/sysaux_1/sysaux.data1
#SAVED.... /oracle/ECQ/sapbackup/beemiuvh/sysaux.data1 #1/43
BR0280I BRBACKUP time stamp: 2010-11-03 20.18.11
BR0063I 43 of 45 files processed - 145564.336 MB of 147448.352 MB done
BR0204I Percentage done: 98.72%, estimated end time: 20:18
BR0001I *************************************************_
BR0202I Saving /oracle/ECQ/sapdata1/system_1/system.data1
BR0203I to /oracle/ECQ/sapbackup/beemiuvh/system.data1 ...
#FILE..... /oracle/ECQ/sapdata1/system_1/system.data1
#SAVED.... /oracle/ECQ/sapbackup/beemiuvh/system.data1 #1/44
BR0280I BRBACKUP time stamp: 2010-11-03 20.18.39
BR0063I 44 of 45 files processed - 146424.344 MB of 147448.352 MB done
BR0204I Percentage done: 99.31%, estimated end time: 20:18
BR0001I **************************************************
BR0202I Saving /oracle/ECQ/sapdata1/system_2/system.data2
BR0203I to /oracle/ECQ/sapbackup/beemiuvh/system.data2 ...
#FILE..... /oracle/ECQ/sapdata1/system_2/system.data2
#SAVED.... /oracle/ECQ/sapbackup/beemiuvh/system.data2 #1/45
BR0280I BRBACKUP time stamp: 2010-11-03 20.18.56
BR0063I 45 of 45 files processed - 147448.352 MB of 147448.352 MB done
BR0204I Percentage done: 100.00%, estimated end time: 20:18
BR0001I **************************************************
BR0280I BRBACKUP time stamp: 2010-11-03 20.19.00
BR0340I Switching to next online redo log file for database instance ECQ ...
BR0321I Switch to next online redo log file for database instance ECQ successful
BR0280I BRBACKUP time stamp: 2010-11-03 20.19.04
BR0319I Control file copy created: /oracle/ECQ/sapbackup/cntrlECQ.dbf 12894208
BR0085I 1 offline redo log file found for backup, size 27.933 MB
BR0202I Saving /oracle/ECQ/sapbackup/cntrlECQ.dbf
BR0203I to /oracle/ECQ/sapbackup/beemiuvh/cntrlECQ.dbf ...
#FILE..... /oracle/ECQ/sapbackup/cntrlECQ.dbf
#SAVED.... /oracle/ECQ/sapbackup/beemiuvh/cntrlECQ.dbf #1/46
BR0280I BRBACKUP time stamp: 2010-11-03 20.19.04
BR0063I 1 of 2 files processed - 12.297 MB of 40.230 MB done
BR0204I Percentage done: 30.57%, estimated end time: 20:19
BR0001I ***************___________________________________
BR0202I Saving /oracle/ECQ/oraarch/ECQarch1_9046_685558507.dbf
BR0203I to /oracle/ECQ/sapbackup/beemiuvh/ECQarch1_9046_685558507.dbf ...
BR0278E Command output of 'LANG=C cp /oracle/ECQ/oraarch/ECQarch1_9046_685558507 .dbf /oracle/ECQ/sapbackup/beemiuvh/ECQarch1_9046_685558507.dbf':
cp: /oracle/ECQ/oraarch/ECQarch1_9046_685558507.dbf: Invalid argument
BR0280I BRBACKUP time stamp: 2010-11-03 20.19.04
BR0279E Return code from 'LANG=C cp /oracle/ECQ/oraarch/ECQarch1_9046_685558507. dbf /oracle/ECQ/sapbackup/beemiuvh/ECQarch1_9046_685558507.dbf': 1
BR0222E Copying /oracle/ECQ/oraarch/ECQarch1_9046_685558507.dbf to/from /oracle/ ECQ/sapbackup/beemiuvh/ECQarch1_9046_685558507.dbf failed due to previous errors
BR0056I End of database backup: beemiuvh.and 2010-11-03 20.19.04
BR0280I BRBACKUP time stamp: 2010-11-03 20.19.04
BR0054I BRBACKUP terminated with errors
srva0004:oraecq 59>
Thanks
Preeti
Edited by: Preeti Sharma on Nov 4, 2010 1:54 PMBR0202I Saving /oracle/ECQ/oraarch/ECQarch1_9046_685558507.dbf
BR0203I to /oracle/ECQ/sapbackup/beemiuvh/ECQarch1_9046_685558507.dbf ...
BR0278E Command output of 'LANG=C cp /oracle/ECQ/oraarch/ECQarch1_9046_685558507 .dbf /oracle/ECQ/sapbackup/beemiuvh/ECQarch1_9046_685558507.dbf': cp: /oracle/ECQ/oraarch/ECQarch1_9046_685558507.dbf: Invalid argument
see above error.
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I think you are using cp command
>disk_copy_cmd copy -
Estimating the Database Size using Archivelog mode
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Bottleneck when switching the redo log files.
Hello All,
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The application team reported that they are facing slowness at certain time.
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Instance 1:
Load Profile Per Second Per Transaction Per Exec Per Call
~~~~~~~~~~~~ --------------- --------------- ---------- ----------
DB Time(s): 4.9 0.0 0.00 0.00
DB CPU(s): 1.1 0.0 0.00 0.00
Redo size: 3,014,876.2 3,660.4
Logical reads: 32,619.3 39.6
Block changes: 7,969.0 9.7
Physical reads: 0.2 0.0
Physical writes: 164.0 0.2
User calls: 7,955.4 9.7
Parses: 288.9 0.4
Hard parses: 96.0 0.1
W/A MB processed: 0.2 0.0
Logons: 0.9 0.0
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
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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
------------------------------------------------------------- -
I use Oracle 11g r2 configure a data guard and fast_start fail over (using data guard broker) environment on linux.
The standby database only sync the data from the primary if
1. Issue 'alter system switch logfile;' on primary machine.
2. Cancel the redo apply and restart it on the standby.
And real-time redo apply can't start, when I issued 'ALTER DATABASE RECOVER MANAGED STANDBY DATABASE USING CURRENT LOGFILE', the sqlplus is hanging and no response.
And in the broker, there always following warning:
Databases:
orclPri - Primary database
Warning: ORA-16829: fast-start failover configuration is lagging
orclStd - (*) Physical standby database
Warning: ORA-16829: fast-start failover configuration is lagging
Edited by: user1665703 on 2011-7-29 下午5:02
Edited by: user1665703 on 2011-7-29 下午5:04As a quick test, go to the primary and say
SQL> select * from v$log;then connect to the standby and say
SQL> select process,status,sequence# from v$managed_standby;Show the output here with copy & paste. Also the output from the primary of
SQL> show parameter log_archive_dest_2or another destination you have setup to reach the standby.
Kind regards
Uwe Hesse
http://uhesse.wordpress.com -
GoldenGate : Why to read all the Redo or Archive, can't we skip ??
Hi All,
I have a big doubt if anyone can give clarity. The scenario is :- In my environment data is flowing from Oracle to Oracle but Huge transactions in Millions and we use this tool basically to improve LAG when we get data for reporting.
Now let's say I have database user A which is doing some temporary transaction on source for couple of hours but it is HUGE and generating lot of archives AND we don't want to flow any data from the transaction being performed by user A - so we use EXCLUDEUSER A parameter.
Now during same time if any other user say B is performing some operation in one table - we want it to flow, So it is flowing normally BUT the main problem is LAG increased like anything cause GoldenGate is now reading all the redo or archives which of no use and data is flowing very slowly :( :(
My point was will it be also possible that I don't want my GoldenGate to read any redo log or archives if the user A is performing operation and read only those archives if user B or any other user is performing some operation. This will improve the LAG cause even though we ignore the particular user, It is still going to read all the redo or huge archives generated by user A or user B or whatever in sequence, Please correct me if I am wrong ?
I suppose goldengate is going to read all the transaction regardless of A or B user. Only it will ignore the A and process transaction of B.
I know it reads in sequence but can't it read specific archives which is useful instead of reading all.Hi Steven,
Thanks for your reply.
I agree with you that "normal" mode of GoldenGate is to capture changes and replicate them and Ofcourse I want it to capture any changes but I don't want it to pass through reading all the archives if I am ignoring one user who is performing HUGE temporary transaction and generating huge archives.
It is going to slow down all the other small transaction changes cause it is passing through all those archives also which is of NO use. Do you mean that "Integrated mode" of new Goldengate version will work in that case ?
Please help, I really need this information. It will help everyone.
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