Topic: Database Administration >> Loading the related data into memory
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| Title: Loading the related data into memory |
| praveen |
Posted: Nov 22, 2007 07:57:06 AM |
Total Post: 3
Joined: Nov, 2007
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Can u please help in loading data into memory .
Eg:- there is one table containing data
Main_table
Sr.no field1 field2 field3
1 primary_key_table11 primary_key_table21 primary_key_table31
2 primary_key_table12 primary_key_table22 primary_key_table32
3 primary_key_table13 primary_key_table2 3 primary_key_table33
4 primary_key_table14 primary_key_table24 primary_key_table34
……
table1
Unique_ID data1 data2 data3 data4
primary_key_table11 xxx xxxx xxxxx xxxx
primary_key_table12 xxx xxxx xxxxx xxxx
primary_key_table13 xxx xxxx xxxxx xxxx
……………
table2
Unique_ID data1 data2 data3 data4
primary_key_table21 xxx xxxx xxxxx xxxx
primary_key_table22 xxx xxxx xxxxx xxxx
primary_key_table23 xxx xxxx xxxxx xxxx
……………
Here I am accessing main_table (only few records ) .so only that data will be there in RAM (memory).
Simultaneously I want to load data into memory from table1 and table2
For those rows that are present in RAM only .
Please help to achieve this
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 Murtuja |
| Posted: Nov 28, 2007 07:53:56 AM |  |
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Total Post: 814
Joined: Jan, 2006
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You really don't need to worry about how and what data is being load into Memory.You just need to tune that query and If you have plenty of RAM then you can PIN small look up tables.
So your first step would be checking the execution Plan of this query.If any Full table scan then you have to create appropriate Indexes.
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