Keep cache option
could anyone explain me if i use keep cache option for the static table, whether it'll have impact to the SGA memory?(I believe the table stored in cache buffer)
According to Oracle document "A good candidate for a segment to put into the KEEP pool is a segment that is smaller than 10% of the size of the DEFAULT buffer pool and has incurred at least 1% of the total I/Os in the system"
so if u load a large table to buffer cache, it will occupy many memory, which could be free for other process. In turn, insufficient buffer cache occurs, the database performance will be worsen.
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Hi,
In one of our applications, we are using TimesTen 5.1.24 and Oracle 9i
databases (platform - Solaris 9i).
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database. While exploring about Oracle 10g features, came to know about
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Pre-production box with 8 core 2 duo processors (16 cores)
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Thanks & Regards,
VijayHi Vijay,
regarding your questions:
1. What is the difference between "TimesTen In-Memory Database" and
"In-Memory Database Cache" in terms of features and licensing model?
==> Product has just been renamed and integrated better with the Oracle database - Times-Ten == In-Memory-Cache-Database
2. Is "In-Memory Database Cache" option integrated with Oracle 10g
installable or a separate installable (i.e. TimesTen installable with only
cache feature)?
==> Seperate Installation
3. Is "In-Memory Database Cache" option same as that of "TimesTen Cache
Connect to Oracle" option in TimesTen In-Memory Database?
==> Please have a look here: http://www.oracle.com/technology/products/timesten/quickstart/cc_qs_index.html
This explains the differences.
4. After integrating "In-Memory Database Cache" option with Oracle 10g, data
access will happen only through Oracle sqlplus or OCI calls. Am I right here
in making this statement?
==> Please see above mentioned papers
5. Is it possible to cache the result set of a join query in "In-Memory
Database Cache"?
==> Again ... ;-)
Kind regards
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Hello,
Version 10204 on linux redhat 4.
In my data warehouse i have a table which it size size 5GB.
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NAME TYPE VALUE
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ThanksHi,
There is a best practice about this configuration (from oracle documentation):
"A good candidate for a segment to put into the KEEP pool is a segment that is smaller than 10% of the size of the DEFAULT buffer pool and has incurred at least 1% of the total I/Os in the system."
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