ON COMMIT FAST MViews seems to be less than bulletproof

This is on Oracle9i Enterprise Edition Release 9.2.0.6.0 - 64bit
Production

 

From the Alert Log we see:

 

 

Fri Jun 15 10:49:03 2007

Following on-commit snapshots not refreshed :

DEALNET.BROWSER_MV_INFO

DEALNET.BROWSER_MV_STATUS

Fri Jun 15 10:49:41 2007

Following on-commit snapshots not refreshed :

DEALNET.BROWSER_MV_INFO

DEALNET.BROWSER_MV_STATUS

Fri Jun 15 11:52:56 2007

Following on-commit snapshots not refreshed :

DEALNET.BROWSER_MV_INFO

DEALNET.BROWSER_MV_STATUS 

 

 

I've googled this and I find a lot of posts asking what causes this but
not a lot of posts for what causes this and how to prevent it. Can
anyone point me to a cause? 

 

TIA,

Mark

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