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Purpose of position counter in EODC

Archives: Power Management Systems

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sesa270337
Schneider Alumni (Retired)
Schneider Alumni (Retired)
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Purpose of position counter in EODC

Hi,

This might be late, but I want to know the purpose of position counter in EODC. I know that it is used by the jobs to retrieve data and can also be used to extract historical data, but I want to know how it works (in detail) and how it is initialized (how to set the initial value).

A document on that would also be helpful.

Thanks,

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sesa64390_bridg
Lieutenant Lieutenant
Lieutenant
0 Likes
1
347

Re: Purpose of position counter in EODC

Hi Allan,

The position counter in EODC is sometimes used in data processing and sometimes not. So it would depend on what tasks you are using (ie what are you extracting from).

For ION E or SPM 7 the position counters are used to figure out where EODC last processed to and then it will pick up again from that spot. It's similar when using the delimited file extract (the position counter is used to remember what the last date/time and value was).

In the case of some of the files the need to just do a 'clear pass through' without any position counters was needed. For the EGX300 [EMIS] Task we took out the reliance on the position counters as this didn't give any benefit (the files needed to be converted and the order in which they came is not important as there is no data edit function on the EGX and the EGX has the ability to re-send it's entire data log if needed).

When you initialize EODC it reads the file or database you are referencing and then it will initialize against the first value in that file/DB. You can manually edit the position counter.

Each of the EODC user guides usually has a section on the position counters and how they are used. Please see the specific user guide for details.

Why are you needing to manually alter the position counters? There may be an easier way to address whatever issue you have if you describe the issue?

Thanks

Colin

See Answer In Context

4 Replies 4
Matt_Curry
Administrator Administrator
Administrator
0 Likes
1
347

Re: Purpose of position counter in EODC

Hi Allan,

Just wondering if you meant for this to go in the Energy Operation area or not.  Just noticed that it went in your own discussion area.

Cheers,

Matt

sesa270337
Schneider Alumni (Retired)
Schneider Alumni (Retired)
0 Likes
0
347

Re: Purpose of position counter in EODC

Oh yes Matt..!! Moving it to Energy Operation area..

sesa64390_bridg
Lieutenant Lieutenant
Lieutenant
0 Likes
1
348

Re: Purpose of position counter in EODC

Hi Allan,

The position counter in EODC is sometimes used in data processing and sometimes not. So it would depend on what tasks you are using (ie what are you extracting from).

For ION E or SPM 7 the position counters are used to figure out where EODC last processed to and then it will pick up again from that spot. It's similar when using the delimited file extract (the position counter is used to remember what the last date/time and value was).

In the case of some of the files the need to just do a 'clear pass through' without any position counters was needed. For the EGX300 [EMIS] Task we took out the reliance on the position counters as this didn't give any benefit (the files needed to be converted and the order in which they came is not important as there is no data edit function on the EGX and the EGX has the ability to re-send it's entire data log if needed).

When you initialize EODC it reads the file or database you are referencing and then it will initialize against the first value in that file/DB. You can manually edit the position counter.

Each of the EODC user guides usually has a section on the position counters and how they are used. Please see the specific user guide for details.

Why are you needing to manually alter the position counters? There may be an easier way to address whatever issue you have if you describe the issue?

Thanks

Colin

sesa270337
Schneider Alumni (Retired)
Schneider Alumni (Retired)
0 Likes
0
347

Re: Purpose of position counter in EODC

Thanks Colin for the information. I was trying to import historical data from a d/b and also trying out custom queries for OLEDB extract task..!!