Hi Stefan,
Thanks for the information. However, I am slightly put off by the
"myriad of options" that Oracle has available. Any additional useful
feature that they make is included as an additional payment option. That
is why advanced compression, a very useful option indeed, is not
frequently found in the field. People are rather giving up on AWR
reports than paying additional $5000/CPU core required to use it. I
doubt that even a very informative pointer to Oracle Documentation and
Richard Foote's blog will manage to persuade a CIO to spend and
additiona $100K just for the database software. And let's not fool
ourselves: Oracle is in decline. Oracle DBA jobs, once a mainstay of
Dice and Monster, are now very hard to find. If I were a CIO, I would
not purchase Oracle, precisely because of the "option madness" which
makes it much, much more expensive than the other database varieties.
The other database varieties may not be as good as Oracle, but are good
enough. From practical side, I am not sure that we will encounter this
new option at many user sites.
Regards
On 05/31/2017 02:19 PM, Stefan Koehler wrote:
Hey Vadim,
which Oracle version?
Starting with 12c you have the "Asynchronous Global Index Maintenance" option - dropping
a partition does not "invalidate" the (global) index.
*
http://docs.oracle.com/database/121/VLDBG/GUID-087B87A6-959A-40C6-82AF-36E401FD089B.htm#VLDBG14107
*
https://richardfoote.wordpress.com/2013/08/02/12c-asynchronous-global-index-maintenance-part-i-where-are-we-now/
Best Regards
Stefan Koehler
Independent Oracle performance consultant and researcher
Website: http://www.soocs.de
Twitter: @OracleSK
Upcoming online seminar: http://tinyurl.com/17-06-13-Shared-Pool-Internals
Vadim Keylis <vkeylis2009@xxxxxxxxx> hat am 31. Mai 2017 um 20:09 geschrieben:--
Good morning. We have table that is partition using interval partition. Older
partition will be dropped on regularly. What is the best practice to
enforce uniqueness across partitions considering that global index is not an
option since it becomes invalid once partition is dropped?
Thanks so much in advance,
Vadim
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