Re: Can you use UDS but NOT lock the data area?

[Scott Klement <klemscot@xxxxxxxxxxxx>]

On Wed, 2 Jul 2003, Booth Martin wrote:
>
> Scott, it should work to use the UDS so long as you also use the keyword
> DTAARA(*LDA).  The line below is copied straight from the manual.
>

Booth,

I thought the original poster wanted to read the data area without locking
it?!   If you code UDS, the compiler will automagically lock the data area
when the program starts.   If you also code DTAARA, then you can unlock
it if you wish -- but that's not the same thing as never locking it.

A common mistake that I've seen people make time & time again, is thinking
that in order to read a data area, you must code UDS.   So, they code it
with UDS, then do an IN (which is unnecessary, since the data has already
been read) then don't understand why it's locked...

If a different job has a lock on the data area, and then their program is
started up, it sits and waits for the lock...  which is often not what was
intended.

Therefore, I always tell people not to mix & match the DTAARA keyword and
UDS.   Use one or the other, your code is clear and your programs work
as expected.