| Deepak |
Posted: Jan 04, 2006 09:41:02 AM |
Total Post: 10
Joined: Mar, 2005
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Hi all,
i have two queries. i have a data base of 25Gb.
1). what size should be of SGA
2). what is appropriate size for undo tablespace and undo retention.
with best regards
Deepak |
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 Vigyan |
| Posted: Feb 08, 2006 11:43:34 AM |  |
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Total Post: 386
Joined: May, 2001
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Hi Deepak,
I would suggest you to run statspack report on your database. If you like email me your statspack report and I can review it.
Send it through our contact us page.
Thanks,
Vigyan
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| Kiran |
| Posted: Apr 05, 2006 08:25:21 AM | |
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Total Post: 9
Joined: Apr, 2006
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1.) Well, Initially it is not possible to estimate correctly the size of SGA..but intitially,the size of SGA should be
SGA_MAX_SIZE = physical_mem - Kernal_Mem - Applications_using_Mem_on_same_server
Then u need to monitor, if SGA is undersized or oversized.
2.)
Size of UNDO Retention =
undo_size / (undo_blocks_per_sec * db_block_size)
Size of UNDO Tablespace=
undo_Retention * (db_block_size * undo_blocks_per_sec)+ db_block_size
For Any explanation.. mail
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| mohamed riaz |
| Posted: Dec 04, 2006 05:25:56 AM | |
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Total Post: 95
Joined: Sep, 2006
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hai
pls tell me any one known performance tuning.
riaz
kmmriaz@hotmail.com
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