It's all about the answers!

Ask a question
QuestionsTagsUsersBadges
Follow this question
Question details

×42,496
×10,750
×4,214
×3,950
×2,321
×267

question asked: Jan 25 '17, 4:48 a.m.
question was seen: 2,124 times
last updated: Jan 25 '17, 6:01 a.m.

Related questions

FAQ - How this Forum works

Should I run db statistics twice during one maintainance window?

0
Krzysztof Kaźmierczyk (7.4k●3●54●99) | asked Jan 25 '17, 4:48 a.m.

I am upgrading from 4.0.6 to 6.0.2 through 5.0.2 during one maintenance window. Is it needed to update database statistics before upgrade from 5.0.2? Or it is enough to run it only once?

2 answers

Most liked answers ↑|Newest answers|Oldest answers

0
permanent link
Krzysztof Kaźmierczyk (7.4k●3●54●99) | answered Jan 25 '17, 4:49 a.m.

There is no need to run database statistics twice. You can run it only before upgrade from 4.0,6.

0
permanent link
Grazielle Codogno (153●6) | answered Jan 25 '17, 6:01 a.m.

You're right. you only need once. The purpose is to keep the plans updates to the best
Although make sure you're not collecting only a sample, and running it to all tables, ok?

SQL : https://msdn.microsoft.com/en-us/library/ms187348.aspx
Oracle : https://docs.oracle.com/cd/B28359_01/server.111/b28274/stats.htm#PFGRF003
DB2 : http://www.ibm.com/support/knowledgecenter/SSEPGG_10.1.0/com.ibm.db2.luw.admin.cmd.doc/doc/r0001980.html

Your answer

Register or to post your answer.