PSAPUNDO is 100 % full

Hi!
During the planing and execution of ValidStruct job from DB13 I detected via tcode DB02 that my PSAPUNDO tablespace is 100% full.
The AutoExt parameter for this tablespace is set on "Off".
The parameter undo_retention is set to value "900". 
Question:
Should I take care about this issue and extend tablespace PSAPUNDO or decrease parameter undo_retention?
If yes, what is the preffered procedure to do this?
Thank you!

Hello Holger,
> Should I take care about this issue and extend tablespace PSAPUNDO or decrease parameter undo_retention?
Please take a look at metalink note #413732.1 ... every point of your question is answered there.
For metalink access please check sapnote #758563.
@ Madhusudan
> This depends on the Oracle version you are using. If you are using Oracle 10 then not to worry, PSAPUNDO will be auto managed.
What is the difference between Oracle 9i and Oracle 10g related to Holgers question.
Regards
Stefan

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