Analyze the index on the machine of Dataguard and redundancy of ASM disks

Dear friends,

I have two questions regarding disc Dataguard and ASM.

(> > 1) for best performance, periodically, we rebuild the index index and analysis analyze table. What is the best periodic steps to do to get better performance?

I mean, first of all is rebuilding of index, is second index analysis and so on......

(> > 2) if I run analyze the index or the table on my PRODUCTION system he replicated this effect on statndby dataguard automatic system? If so, how it is replicated?

(> > 3) my last question related with high redundancy of the ASM disk. I have some confusion on this area.

Let's say I have 10 disks in a diskgroup '+ DATA' and I did 'HIGH' level redundancy, means 3 way redundancy. Here I know 3-way the redundancy, it writes data on 3 discs at a time. But what of the other 7 discs. In fact, I need to know the mechanism of writing?

-Each disc is identical to the other drive?

-For HIGH redundancy, how many disk failure can be tolerated for any loss of data?

Waiting for your kind reply......

"on my PRODUCTION'---> you mean"on my FIRST.

Yes, the data dictionary is updated when you run dbms_stats.gather% and updates data dictionary are through recovery that applies to the WAITING for more.

NOLOGGING surgery would not be applied to the expectation (the index would be marked corrupted to the standby) unless you have set on FORCELOGGING.

Hemant K Collette

Tags: Database

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    "Now available: url = http://www.astroarch.com/wiki/index.php/VMware_Virtual_Infrastructure_Security' VMware vSphere (TM) and Virtual Infrastructure Security: securing the virtual environment ' [url]
    Also available url = http://www.astroarch.com/wiki/index.php/VMWare_ESX_Server_in_the_Enterprise"VMWare ESX Server in the enterprise" [url]
    [url =http://www.astroarch.com/wiki/index.php/Blog_Roll] SearchVMware Pro [url] | URL = http://www.astroarch.com/blog Blue Gears [url] | URL = http://www.astroarch.com/wiki/index.php/Top_Virtualization_Security_Links Top security virtualization [url] links | URL = http://www.astroarch.com/wiki/index.php/Virtualization_Security_Round_Table_Podcast Virtualization Security Table round Podcast [url]

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