we ended up with an ORA-600 after lots of 'SMON offlining undo segment"
messages in the alert log. Happened only once, Support asked us to set
an event and trap it when/if it happens again

I'm beginning to think maybe I should have stuck with rollback segments


--- Kirtikumar Deshpande <[EMAIL PROTECTED]> wrote:
> A classic case when AUM does not help prevent 1555 errors ! 
>  
> Query duration is MAXQUERYLEN reported in v$undostat view. SCN could
> be the 'as of SCN' when the query started (not sure, as I could never
> get my small tests to fail with 1555 when using AUM). 
>  
> What is also interesting is the SMON activity of offlining undo
> segments. That very well could be the reason for this error. 
>  
> In this case adjusting UNDO_RETENTION > MAXQUERYLEN is one option.
> The other being, correcting this long running query. 
>  
> BTW.. Raj & I exchanged e-mails earlier regarding this, as I just
> wanted to confirm that he was using Auto Undo Dmgt feature ;) 
>  
> He informed me that v$undostat view did report a non-zero count in
> the SSOLDERRCNT column as expected... so that column works okay. 
>  
> Cheers!
>  
> - Kirti 
> 
> 
> "Jamadagni, Rajendra" <[EMAIL PROTECTED]> wrote:
> 
> A sighting in alert log ... 
> 
> SMON offlining US=102 
> SMON offlining US=104 
> Fri Jun  6 08:42:06 2003 
> ORA-01555 caused by SQL statement below (Query Duration=41895 sec,
> SCN: 0x0010.c2bd0c24): 
> Fri Jun  6 08:42:06 2003 
> SELECT ROUND(G_1/:"SYS_B_00") G_1, ROUND(G_2/:"SYS_B_01") G_2,
> ROUND(G_3/:"SYS_B_02") G_3, ROUND(G_4/:"SYS_B_03") G_4, R
> 
> OUND(G_5/:"SYS_B_04") G_5, ROUND(A_1/:"SYS_B_05") A_1,
> ROUND(A_2/:"SYS_B_06") A_2, ROUND(A_3/:"SYS_B_07") A_3, ROUND(A_4
> 
> /:"SYS_B_08") A_4, ROUND(A_5/:"SYS_B_09") A_5, LOG_NO, AE, ADVR,
> AGNC, OFFICE, POB_ID, POB_CREATE_DT, POB_STAT  From (SE
> 
> LECT
>
DECODE(YEAR,:"SYS_B_10",NVL((DECODE(QTR,:"SYS_B_11",NVL(CURR_GOAL,:"SYS_B_12"))),:"SYS_B_13"),:"SYS_B_14")
> G_1,DECO
> 
>
DE(YEAR,:"SYS_B_15",NVL((DECODE(QTR,:"SYS_B_16",NVL(CURR_GOAL,:"SYS_B_17"))),:"SYS_B_18"),:"SYS_B_19")
> G_2,DECODE(YEAR,:
> 
>
"SYS_B_20",NVL((DECODE(QTR,:"SYS_B_21",NVL(CURR_GOAL,:"SYS_B_22"))),:"SYS_B_23"),:"SYS_B_24")
> G_3,DECODE(YEAR,:"SYS_B_25
> 
>
",NVL((DECODE(QTR,:"SYS_B_26",NVL(CURR_GOAL,:"SYS_B_27"))),:"SYS_B_28"),:"SYS_B_29")
> G_4,DECODE(YEAR,:"SYS_B_30",NVL((DE
> 
>
CODE(QTR,:"SYS_B_31",NVL(CURR_GOAL,:"SYS_B_32"))),:"SYS_B_33"),:"SYS_B_34")
> G_5,DECODE(YEAR,:"SYS_B_35",NVL((DECODE(QTR,
> 
> :"SYS_B_36",NVL(CURR_ACCRUAL,:"SYS_B_37"))),:"SYS_B_38"),:"SYS_B 
> ~ 
> 
> But I havn't figured out why query duration and SCN is shown any
> ideas? ... what is the significance? Oracle 9202, RAC 
> 
> TIA 
> Raj 
>
--------------------------------------------------------------------------------
> 
> Rajendra dot Jamadagni at nospamespn dot com 
> All Views expressed in this email are strictly personal. 
> QOTD: Any clod can have facts, having an opinion is an art ! 
> *********************************************************************
> 
> ---------------------------------
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