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Home -> Community -> Mailing Lists -> Oracle-L -> Index Creation question
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I have a question about creating an index on a production OLTP database. = This type of work I usually schedule for weekends or late at night when = downtime would cause minimal problems. The client I am currently = working for, as a developer not a DBA--I learn about all things DBA as I = go--, is asking me to do this in the middle of the day. The deal is I = am going away for the weekend and won't be able to do it until next week = when I return.
Anyway my reservation has to do with incoming transactions during the = index build. First I have this thought in the back of my head that = creating an index will lock the table, but I can't really say where that = is coming from. Secondly I am certain that it will have a negative = impact on transactions during the index creation. We are talking about = 4 million rows in the table, and it is THE table read and written to = during OLTP.
Am I just being paranoid, or should I make them wait?
Steve McClure
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<DIV><FONT face=3DArial size=3D2>I have a question about creating an =
index on a=20
production OLTP database. This type of work I usually schedule for =
weekends or late at night when downtime would cause minimal =
problems. The=20
client I am currently working for, as a developer not a DBA--I learn =
about all=20
things DBA as I go--, is asking me to do this in the middle of the =
day. =20
The deal is I am going away for the weekend and won't be able to do it =
until=20
next week when I return.</FONT></DIV>
<DIV><FONT face=3DArial size=3D2></FONT> </DIV>
<DIV><FONT face=3DArial size=3D2>Anyway my reservation has to do with =
incoming=20
transactions during the index build. First I have this thought in =
the back=20
of my head that creating an index will lock the table, but I can't =
really say=20
where that is coming from. Secondly I am certain that it will have =
a=20
negative impact on transactions during the index creation. We are =
talking=20
about 4 million rows in the table, and it is THE table read and written =
to=20
during OLTP.</FONT></DIV>
<DIV><FONT face=3DArial size=3D2></FONT> </DIV>
<DIV><FONT face=3DArial size=3D2>Am I just being paranoid, or should I =
make them=20
wait?</FONT></DIV>
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