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Hi folks,
I have a CP (CP-40) that has its control database corrupted when a person
answered Yes when presented with the "Database locked. Override?" dialogue
box.
A little background: I schedule a weekly cron job to perform SaveAll on all
of our CPs using the ICCAPI save_all command. As luck would have it, this
person was called in on a Sunday to fix a sequence problem, and he tried to
open a CIOCFG session on this CP while the ICCAPI save_all was running. When
presented with the "Database locked. Override?" question, he didn't hesitate
long, reasoning that it was Sunday and nobody would be working on that CP,
must be a mistake. Once in the control session, he still couldn't connect to
the CP so he rebooted it.
Since then, I have not been able to perform a good SaveAll for this CP.
Using the CIOCFG interface the SaveAll appears to run successfully, but I
can't perform a LoadAll with the resulting disk (to an off-line CP), I keep
getting "Invalid block type" error for each of the compounds in this CP.
Using the ICCAPI save_all command always resulted in a failure message with
the following text in the /tmp/output* files (at different times after
trying different things to mitigate the problem):
04AW01# more /tmp/output*
FAIL 3 save 20CP02!: Wed Mar 28 16:27:01 2001 -8 Save cmd: no path name
arg
04AW01# more /tmp/output*
FAIL 2 getorder 20CP02!: Thu Mar 29 15:52:50 2001 -15 Get compound order
cmd
: ICCget error: class= 20 error= 4 text= load_wrk: fread error
04AW01# more /tmp/output*
FAIL 4 save 20CP02!20CP02_STA: Fri Mar 30 09:08:34 2001 -8 Save cmd: no
path
name arg
BTW, I can do an upload for this CP and the workfile appears to be in good
condition (at least good enough so that I can see all the compounds, blocks,
and parameters while in a CIOCFG session). And the CP is still running okay
as we speak.
Questions:
1. What are my options in getting a good SaveAll for this CP?
2. If I have no option, would initializing/rebooting/reloading it with a
good SaveAll (from 2 weeks back) get me out of this jam?
3. Has anybody encountered problem similar to this, and what's your remedy?
Thanks for any thought and help.
Duc
--
Duc M. Do
Process Control Systems
Dow Corning, Carrollton Plant
Carrollton, KY, US
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