| Clarify my doubts!! [message #7684] |
Mon, 30 June 2003 23:30  |
sachin kumar gupta
Messages: 157
Registered: March 2003
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Senior Member |
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Hi,
I m a begineer in Oracle DBA.
I have 3 doubts regarding fundamentals of DBA:
1) Where is the SGA allocated ?(virtual memory or RAM or shared)
2) As Cache is a fast memory, then where is data buffer cache(all 3 types), redo log cache is allocated?
(whether in cache or virtual or main memory)
3) Data dictionary cache stores the most recently used data definitions & the info. regarding the datafiles.
Is this info. reg. the datafiles is also the most recently, & if so then by what method used to get the data whose info. corresponding abt. datafiles is not there in data dictionary?
Any response will be highly appreciable.
TIA,
Sachin
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| Re: Clarify my doubts!! [message #7687 is a reply to message #7684] |
Tue, 01 July 2003 03:49  |
Deepa
Messages: 269
Registered: November 2000
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Senior Member |
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HI,
SGA is allocated in RAM
Data buffer cache is present inside the SGA( RAM) which is is a cache only used to stored Data blocks
regards,
Deepa
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