question regarding automatic undo 2005-06-21 - By Jeffrey Beckstrom
Am I correct in that possibly database 2 was very busy and decided it
needed more segment so dynamically created them. Sometime thereafter,
not needed so they were offlined????
>>> "Goulet, Dick" <DGoulet@(protected)> 6/21/05 12:54:27 PM >>>
Yes. When you enable automatic undo management you leave all of that
to the database engine.
From: oracle-l-bounce@(protected)
[mailto:oracle-l-bounce@(protected)] On Behalf Of Jeffrey
Beckstrom
Sent: Tuesday, June 21, 2005 12:41 PM
To: oracle-l@(protected); oracle-db-l@(protected);
ORACLE-L@(protected); oracledba@(protected);
oracle-rdbms@(protected)
Subject: question regarding automatic undo
Two identical databases.
database 1 has 10 undo online and 2 offline
database 2 has 10 undo online and 23 offline
Why does the second have more offline undo segments. Does Oracle
automatically create them if needed and when no longer needed offline
it??
Jeffrey Beckstrom
Database Administrator
Greater Cleveland Regional Transit Authority
1240 W. 6th Street
Cleveland, Ohio 44113
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<BODY style="MARGIN: 4px 4px 1px; FONT: 10pt Tahoma">Am I correct in that
possibly database 2 was very busy and decided it needed more segment so
dynamically created them. Sometime thereafter, not needed so they were
offlined????<BR><BR>>>> "Goulet, Dick" <DGoulet@(protected)> 6/21
/05
12:54:27 PM >>><BR>
<DIV style="FONT: 10pt Tahoma">
<DIV dir=ltr align=left><SPAN class=441555316-21062005>Yes. When you
enable automatic undo management you leave all of that to the database
engine.</SPAN></DIV><BR>
<DIV class=OutlookMessageHeader lang=en-us dir=ltr align=left>
<HR tabIndex=-1>
<B>From:</B> oracle-l-bounce@(protected)
[mailto:oracle-l-bounce@(protected)] <B>On Behalf Of </B>Jeffrey
Beckstrom<BR><B>Sent:</B> Tuesday, June 21, 2005 12:41 PM<BR><B>To:</B>
oracle-l@(protected); oracle-db-l@(protected);
ORACLE-L@(protected); oracledba@(protected);
oracle-rdbms@(protected)<BR><B>Subject:</B> question regarding automatic
undo<BR><BR></DIV>
<DIV></DIV>
<DIV>Two identical databases.</DIV>
<DIV> </DIV>
<DIV>database 1 has 10 undo online and 2 offline</DIV>
<DIV>database 2 has 10 undo online and 23 offline</DIV>
<DIV> </DIV>
<DIV>Why does the second have more offline undo segments. Does Oracle
automatically create them if needed and when no longer needed offline it??</DIV>
<DIV> </DIV>
<DIV> </DIV>
<DIV> </DIV>
<DIV>Jeffrey Beckstrom<BR>Database Administrator<BR>Greater Cleveland Regional
Transit Authority<BR>1240 W. 6th Street<BR>Cleveland, Ohio
44113</DIV></DIV></BODY></HTML>
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