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unix sequence versus oracle [message #186705] Wed, 09 August 2006 02:56 Go to next message
mape
Messages: 241
Registered: July 2006
Location: Slovakia
Senior Member
Hello

How to create sequence in unix just like for instance oracle sequences?

I need to create unix file of file naming convention

file_<sequence>.txt
where sequence is number start with 1 increment by 1.

The next created file would be file_002.txt and so.

Thanks

Re: unix sequence versus oracle [message #187723 is a reply to message #186705] Tue, 15 August 2006 03:04 Go to previous message
Jai Vrat Singh
Messages: 205
Registered: September 2002
Location: Singapore
Senior Member
There is nothing like OS( e.g UNIX) sequence. But to emulate, you can create a file which will act as a shared memory(area) for all processes accessing it. Take a lock on file, read the data in it, use it increament the data write in file and unclock it. Be careful while locking and unlocking. Poor impelmentation may cause deadlocks.
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