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тАО02-18-2009 09:50 AM
тАО02-18-2009 09:50 AM
Logical standby performance
Hi,
Will there be any performance impact when using SQL apply logical standby database compared to direct redo apply physical standby database? Let's take we are doing some bulk delete(around 10k) in primary, will there be any more time lag when replicate to LSDB.
Note: Both primary and LSDB are within the same datacenter.
Thanks,
Srini
Will there be any performance impact when using SQL apply logical standby database compared to direct redo apply physical standby database? Let's take we are doing some bulk delete(around 10k) in primary, will there be any more time lag when replicate to LSDB.
Note: Both primary and LSDB are within the same datacenter.
Thanks,
Srini
3 REPLIES 3
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тАО02-18-2009 09:58 AM
тАО02-18-2009 09:58 AM
Re: Logical standby performance
You could post your query in Oracle Forums
"Light travels faster than sound. That's why some people appear bright until you hear them speak."
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тАО02-18-2009 10:02 AM
тАО02-18-2009 10:02 AM
Re: Logical standby performance
you could refer to forum in oracle or oracle admin guide
http://www.sc.ehu.es/siwebso/KZCC/Oracle_10g_Documentacion/server.101/b10823/log_apply.htm
http://www.sc.ehu.es/siwebso/KZCC/Oracle_10g_Documentacion/server.101/b10823/log_apply.htm
"Light travels faster than sound. That's why some people appear bright until you hear them speak."
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тАО02-19-2009 04:05 AM
тАО02-19-2009 04:05 AM
Re: Logical standby performance
Yes , There will time lag.
Because LSDB is more slow than PSDB as because of sql apply is done through log miner technology.
LSDB will extract sql from archive log & then it will apply to standby db.
Where as PSDB log apply will be done block by block.
Because LSDB is more slow than PSDB as because of sql apply is done through log miner technology.
LSDB will extract sql from archive log & then it will apply to standby db.
Where as PSDB log apply will be done block by block.
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