Resize SGA using OEM

Oracle 10
Win 2k3

Hi,

There are 3 instances, two of which have the SGA max size set to 276MB.  I would like to reduce this to 160 so in OEM I changed the value, clicked apply and then restarted the server but when it comes back up it says 276MB again.  What am I missing?

thanks in advance
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djguvnorAsked:
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actonwangCommented:
change sga_max_size in pfile then is sqlplus issue:
   create spfile from pfile
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actonwangCommented:
you can not change "sga_max_size" using "alter system ..." so you have to go from pfile.
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