NIO on Solaris lost selection key

Using non-blocking NIO on Solaris 8, when I have read from a channel and switch to writing using key.interestOps(SelectionKey.OP_WRITE) the next time I attempt a select call there are no keys returned.
The exact same code running on Win XP works fine.
Are there known issues with this on Solaris? Any known workarounds?
Any thoughts where my keys are going?
Regards
Paul

Solved: It was related to a locking problem in the selector - apparently Windows is not being as strict as Solaris...

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Hi,
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I want to know the difference between Field Selection Keys AKTH, ME21, and ME21N.
I have observed during Testing that, AKTH and ME21N are almost the same.
But, I like to know the difference.
Which is to be used when?
Please give suitable suggestions in this regard.
Thanks in advance.
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Srinivasa M.S
+91-9910077829

Hi,
Go through following information.
Field selection key: -
You should not delete the field selection keys listed below, which the dialog program uses for control purposes, otherwise the dialog may terminate during processing:
1. Field selection key: transaction
The field selection key that corresponds to the transaction code: for example, field selection key ME22 for the transaction "Change Purchase Order". For the Enjoy Purchase Order transactions (creating, changing, displaying), there is only field selection key ME21N.
2. Field selection key: activity type
Is set from the activity type as follows:
AKTH    In creation mode
AKTV    In change mode
AKTA    In display mode
AKTE    With PO extension
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3. Field selection key: purchasing document type
The field selection key that you have assigned to the document type for the purchasing document. For example, field selection key UBF is assigned to document type UB, which is used for stock transfer orders (within a company code). In this key, the fields Price and Price unit are suppressed.
4. Field selection key: item category/document category
This is determined from the item and document categories as follows: The first two characters consist of the letters 'PT', the third character of the item category (internal representation), and the fourth of the document category:
A   for RFQs,
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F   for purchase orders
K   for contracts
L   for scheduling agreements
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Field selection key: function authorization/release status
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Field selection key: subitem/creation indicator
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SAP Recommendation: -
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Hi,
I have a query regarding Field Selection Key.
When we go to Field Selection Screen connected to Purchase Order, we can find so many Field Selection Keys viz., $$$$, $$$2, AKTH, ME21N, etc.
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Please guide me in this regard by giving proper suggestions in this regard.
Thanks in advance.
Thanks & Regards,
Srinivasa M.S
+91-9910077829

Hi Karthik,
Thanks for your valuable information.
I like to know few more things.
1) Is it possible to create our own Field Selection Key?
2) If you observe the list of Field Selection Keys related to Purchase Order Screen, you can see that there are Field Selection Keys by name ME21N, ME21, AKTH, etc.
If the Field Selection Keys are predefined by SAP, it is OK. But, if there is an option to create our own Field Selection Key, then what is the procedure to do the same?
It seems that ME21N, ME21, and AKTH are used for Create Purchase Order Screen.
There are also keys ME22N and ME23N used for Change Purchase Order Screen and Display Order Screen.
I am little bit confused about this.
We are linking the Field Selection Keys to the Document Types.
But, I think it is only for create Purchase Order Screen. Please correct, if I am wrong.
Also, I like to know how we are linking the Field Selection Keys related to Change Purchase Order Screen and Display Purchase Order Screen?
Please clarify all my doubts by giving proper suggestions.
Thanks in advance.
Thanks & Regards,
Srinivasa M.S
+91-9910077829

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We have defined two different ZFK1, ZFK2 Custom Field selection keys for payterms & GR/IR Indicators in Purchase order .
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Regards

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NIO on Solaris lost selection key

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