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Oracle Dba

Hi all,

i would like to know about the error SNAPSHOT TOO YOUNG ERROR and LIFE CYCLE OF SMON.

Regards
Girish Pandey
Mar 12 '08 #1
2 1341
Dave44
153 100+
Hi all,

i would like to know about the error SNAPSHOT TOO YOUNG ERROR and LIFE CYCLE OF SMON.

Regards
Girish Pandey
SMON is system monitor, it is responsible for system level functions checking the SCN numbers in all datafiles upon DB startup. If they dont read as they should then it is responsible for instance recovery. it updates various views.

never heard of snapshot too young... on the other hand snap shot too old error can occur when the underlying tables involved in a cursor are changed and the rollback segments used for the changes are overwritten by other new segments and so a consistent read state can no longer be maintained for the cursor.
Mar 13 '08 #2
debasisdas
8,127 Expert 4TB
Sorry dear

I had never heard of SNAPSHOT TOO YOUNG ERROR in my entire carrier.

Before posting such questions please refer some book and you should know what you are asking.
I am sure you heard it from some where and posted it here without second thought.

Please find more about SMON here and here . .
Mar 13 '08 #3

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