ORA-1652: Unable To&nb…

 
 

ID …
		RAC databases and ORA-1652: Unable To Extend Temp Segment By %s In Tablespace TEMP [ID 258941.1]	转到底部

修改时间:2012-2-7类型:PROBLEM状态:MODERATED优先级:3

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In this Document

Symptoms

Changes

Cause

Solution

References

This document is being delivered to you via Oracle Support's Rapid Visibility (RaV) process and therefore has not been subject to an independent technical review.

Applies to:
Oracle Server - Enterprise Edition - Version:
9.2.0.1 to 10.2.0.1 - Release: 9.2 to 10.2

Information in this document applies to any platform.

***Checked for relevance on 06-Feb-2012***
Symptoms
Scripts may fail due to ORA-1652 "unable to extend
temp segment by %s in

tablespace TEMP"

although free space exists in TEMP tablespace in a RAC database
configuration.

Also scripts may not fail you may find error messages
(ORA-1652)

inside the alert.log of some of the instances.
Changes
Migrate to RAC configuration.

Use Default Temporary Tablespace feature.
Cause
We have 2 separate bugs here:

bug 2934117 : ORA-1652:CAN'T ACQUIRE FREE EXTENTS OWNED BY
OTHER NODE

for when scripts fail and also

bug 2858082 : EVEN IF THE FREE EXTENTS ARE AVAILABLE, ORA-1652
OCCURS IN ALERT.

LOG ON RAC

when scripts do not fail but errors appear inside alert.log of RAC
instances.
Solution
1st Case
bug 2934117

====================

Due to
bug 2934117 we should NOT use a DEFAULT TEMPORARY
TABLESPACE

for RAC database configuration, otherwise scripts could fail with
ORA-1652 as a RAC node

cannot acquire free extents that are owned by another RAC instance
although they are free.

bug 2934117 is fixed in 9205 and all versions of Oracle 10.
Therefore, the best solution is to apply the latest patch set or to
upgrade to a supported version of Oracle.

Another solution is to apply the following workaround:

Workaround

------------------

step 1: Create new normal temp tablespace with minimum size (for
example TEMPRAC )

step 2: Set as default temp tablespace TEMPRAC

alter database default temporary tablespace TEMPRAC;

This commands changes all database users temporary tablespace to
TEMPRAC

Now previous default temporary tablespace TEMP is a normal
temporary tablespace.

step 3: For all database users change back temporary tablespace to
TEMP:

alter user default tempory teblespace TEMP;

step 4: shutdown immediate all instances

step 5: startup all instance

Unfortunatelly this TEMPRAC Default Temporary Tablespace cannot be
dropped

completely.

We should keep it with small size.

In case new Database users are created, and temporary tablespace is
not defined

at creation time, these would

have as temporary tablespace TEMPRAC, so every new user after
creation we have

to specify:

alter user temporary tablespace TEMP;

-> in order to change their temporary tablespace to TEMP which
is a normal

temporary tablespace.

2nd case
bug 2858082

==================

The 2nd issue is caused due to the
bug 2858082 "EVEN IF THE FREE EXTENTS ARE

AVAILABLE, ORA-1652 OCCURS IN ALERT.LOG ON RAC "

In this bug although scripts that need Temp tablespace space due to
Sort

Operations (order by, group by, join, etc)

are successfull we may see this error message inside alert.log of
RAC instances.

When a RAC instance fills its own sort pool of extents, instead of
allocation

new extents it may ask for free temp extents

from the other RAC instances. During this operation the ORA-1652
may appear

inside the alert.log although the operation has succeeded.

This bug would only be solved in subsequent releases as it has
been

characterised as a low priority issue from development as only
dis-affect is that alert.log

may contain such messages but process do not fail.

You can ignore these error messages.

bug 2858082 is now fixed in 9207 10104 and 10201.

Therefore, the best option is to apply the latest patch set.

References

BUG:2934117 - ORA-1652:CAN'T ACQUIRE FREE EXTENTS OWNED BY
OTHER NODE

 

相关内容 …

 

产品 …

Oracle Database Products > Oracle Database > Oracle Database > Oracle Server - Enterprise Edition >
Real Application Cluster > RAC Administrative Issues

错误 …

ORA-1652
 

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