When will ora-01555 error not be recorded in alert file?

Application side repeatably gets ora-01555 error, but from alert log, there is no such error recorded. I recalled normally this error will be recorded, so under which condition we can't find this error in alert file?

You would get ORA-0155 on a LOB if
a) the LOB storage has been defined with PCTVERSION which is low (Oracle doesn't use Undo Segments but uses space in the LOB Segment itself and if this is inadequate for multiple updates, an ORA-0155 is raised, which is not really related to Undo Segments but the space in the LOB segment)
b) the LOB storage has been defined with RETENTION which is low
(Even if you increase undo_retention, you'd have to modify the LOB segment to PCTVERSION and then back to RETENTION for it to use the new undo_retention value).
See MetaLink Notes 162345.1, 66431.1 and 563470.1
Since the ORA-01555 error doesn't really relate to Undo segments, I believe that it would not be reported in the alert.log file -- but I haven't verified this.
Hemant K Chitale
http://hemantoracledba.blogspot.com

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ORA-01555 error ?

I found one ora-01555 error in alert log at 14:37PM.But when i run the following query
select ssolderrcnt from v$undostat where to_char(begin_time,'hh:mi:ss')='14:00:00' and to_char(end_time,'hh:mi:ss')='15:00:00'
no rows selected is getting
It has to show 1 as ora-01555 occured at 14:37pm.
Whats wrong.?

g, the reference material really does not apply to the question of this thread which is finding the v$undostat information for the time period when an ORA-015555 error occurred.
Try this:
select * from v$undostat
where ssolderrcnt <> 0
or nospaceerrcnt <> 0
This should find all v$undostat periods where a 1555 occurred along with periods where you ran short of undo tablespace.
Also v$undostat is only populated where undo management is in effect. There should be 404 rows in this view if undo management is in effect otherwise this view is not useable for this purpose.
HTH -- Mark D Powell --

Does RULE hint cause ORA-01555 errors ?

DB Version:9.2.0.5.0
OS:SunOS 5.9
Our DBA is saying that the RULE hint in the below SQL might be causing ORA-01555 error. Is it true? Does RULE hint cause ORA-01555 errors
SELECT /*+ RULE */ COUNT(*)
FROM ( SELECT /*+ RULE */ DISTINCT CAR_HDR.CAR_NBR AS A1, CAR_HDR.PLT_ID AS A29,
CAR_HDR.PKT_CTRL_NBR AS A2, CAR_HDR.TOTAL_QTY AS A21, CAR_HDR.STAT_CODE AS A6,
CAR_HDR.CURR_LOCN_ID AS A12,
CAR_HDR.CAR_NBR AS A145,
CAR_HDR.WN_NBR AS A4, CAR_HDR.PCALL_NBR AS A7, CAR_HDR.CHAIN_CNT AS A119,
CAR_HDR.SHPMT_NBR AS A35, LPN_HDR.WHSE AS A105, CAR_HDR.MISC_CAR AS A146, '' AS A138,
CAR_HDR.CHUTE_ID AS A132, CAR_HDR.MOD_DATE_TIME AS A82, LPN_HDR.LOCN_CLASS AS A106,
LPN_HDR.AREA AS A107, LPN_HDR.ZONE AS A108, LPN_HDR.AISLE AS A109, LPN_HDR.BAY AS A110,
LPN_HDR.LVL AS A111, LPN_HDR.POSN AS A112
      FROM INV_MASTER , CAR_DTL , LPN_HDR , CAR_HDR
       WHERE CAR_HDR.CAR_NBR=CAR_DTL.CAR_NBR(+)
       AND CAR_HDR.CURR_LOCN_ID=LPN_HDR.LOCN_ID(+)
       AND CAR_HDR.WHSE=LPN_HDR.WHSE(+)
       AND CAR_DTL.SKU_ID=INV_MASTER.SKU_ID(+)
       AND CAR_HDR.CT_SEQ = 'ALB10'
       AND INV_MASTER.INV_CODE = 98
       AND INV_MASTER.TRACK_CODE = 'P10' )


user636669 wrote:
DB Version:9.2.0.5.0
OS:SunOS 5.9
Our DBA is saying that the RULE hint in the below SQL might be causing ORA-01555 error. Is it true? Does RULE hint cause ORA-01555 errorsThe full statement is causing the ORA-01555 error. Each line of the statement is important therefore each line is reponsible for the error. I personally think the DISTINCT keyword has a bigger influence than the RULE hint.
I suggest to check what you want to do with that count result. maybe there are better ways to get the same result. Maybe you can even ignore the distinct keyword or remove some outer joins. Using the CBO might result in the same plan as using the RBO, so you you will never know if that removing the hint will help or if if you'll get the same problem later again.

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SQL*Plus: Release 10.1.0.4.2 - Production on Wed Mar 21 09:51:49 2007
Copyright (c) 1982, 2005, Oracle. All rights reserved.
SQL> connect SYS as SYSDBA
Enter password:
Connected to an idle instance.
SQL> startup
ORACLE instance started.
Total System Global Area 100663296 bytes
Fixed Size 778024 bytes
Variable Size 99623128 bytes
Database Buffers 0 bytes
Redo Buffers 262144 bytes
ORA-00205: error in identifying controlfile, check alert log for more info
======================================================================
SQL*Plus: Release 10.1.0.4.2 - Production on Wed Mar 21 11:18:57 2007
Copyright (c) 1982, 2005, Oracle. All rights reserved.
SQL> connect SYS as SYSDBA
Enter password:
Connected.
SQL> startup nomount
ORA-01081: cannot start already-running ORACLE - shut it down first
SQL> exit
Disconnected from Oracle Database 10g Enterprise Edition Release 10.1.0.4.2 - Production
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Do you have a backup?

I was installing an update when I got the error message that the MSVCR80.dll file was missing. It wants me to reload itunes. What do I do?

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ORA-01555 error when assigning values based on geometry

Hello,
I have a table with 220,000+ records with street information, and I am trying to assign a municipal area (stored in another table) based on the geometry of the road line and the geometry of the municipal boundary.
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mask=inside querytype = window')='TRUE';
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b) broke it up into groups of 50,000 records and run the statement on one group at a time and hope for the best.
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Assuming you have less municipal areas than roads, the query should perform better by specifying the join order:
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     WHERE B.TYPE IN (33,35,36,37)
     AND mdsys.sdo_relate (a.geometry, b.geometry,'mask=inside querytype = window') = 'TRUE');Also, are you sure 'inside' is the right mask to use here? What if a road intersects the edge of the municipality? In that case it wouldn't be returned by this query.

Help to produce an ora-01555 error.

Hello all,
I've been gotten wind of about UNDO management, but I'm not able to reproduce an ora-01555. I tried one way that I found in some metalink notes but I didn't succeed. I know that using some PL/SQL statements I get there, but how can I achieve it?
I appreciate your help.
Thanks in advance,
Regards,
Emerson

Easy to reproduce. Just use flashback query to an SCN that has aged out of undo.
E.g
SQL> select object_id from test as of scn 5936742 where object_id = 20;
select object_id from test as of scn 5936742 where object_id = 20
ERROR at line 1:
ORA-01555: snapshot too old: rollback segment number 6 with name
"_SYSSMU6_2443381498$" too smallAnother option is to reduce undo retention, shrink the undo tablespace and turn off autoextend. Then in one session run a long select, and in another session run a loop with an update and a commit.
E.g
begin
for i in 1..10000 loop
update test set object_id = object_id where object_id = 20;
commit;
end loop;
end;
/

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ORA-01555 error, snapshot too old

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null

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When will come this error Could not connect to SMTP host: son1175, port: 25

Hi all
we configure SMTP server on Linux ES,my java application run on same server
from my application trying to send a mail i got this error
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regards
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Could not connect to SMTP host: son1175, port: 25;
nested exception is:
java.net.ConnectException: Connection refusedYou didn't notice that this question is asked every day here?
Your computer can't connect to a computer named "son1175", or if it can then that computer isn't running a server listening at port 25. Talk to your network people if your computer name is the right one and ask them why not. It is nothing to do with programming.

When will ora-01555 error not be recorded in alert file?

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