Question: I have a
table with millions of records and I get a error on my
TEMPORARY tablespace when creating an index. How to
create an index without having temp tablespace problems?
I get the
ora-01652_unable_to extend_temp segment error.
Answer: Oracle must sort the rows
for the index, and this must be done in TEMP or PGA.
You can set a larger TEMP tablespace size or set a large
parallel degree, making the operation have more PGA (one for
each process).
Open up a 100 gig PGA and sort it in
RAM, 300x faster, see
my
notes on index sorting here.
Parallel processing
up to 16 threads on a 4 CPU server. As discussed in
MOSC thread 460157.996,
a supported way to increase the maximum PGA memory per
single SQL query is to increase the degree of parallelism.
You can also set a
super-large PGA (during slow processing times)
|
|
|
|
|
Oracle Training from Don Burleson
The best on site
"Oracle
training classes" are just a phone call away! You can get personalized Oracle training by Donald Burleson, right at your shop!
|
|
|
|
| |
|
Burleson is the American Team
Note:
This Oracle
documentation was created as a support and Oracle training reference for use by our
DBA performance tuning consulting professionals.
Feel free to ask questions on our
Oracle forum.
Verify
experience!
Anyone
considering using the services of an Oracle support expert should
independently investigate their credentials and experience, and not rely on
advertisements and self-proclaimed expertise. All legitimate Oracle experts
publish
their Oracle
qualifications.
Errata?
Oracle technology is changing and we
strive to update our BC Oracle support information. If you find an error
or have a suggestion for improving our content, we would appreciate your
feedback. Just
e-mail:
 and include the URL for the page.
Copyright © 1996 - 2017
All rights reserved by
Burleson
Oracle ®
is the registered trademark of Oracle Corporation.
Remote Emergency Support provided by
Conversational
|
|
