Exactly, we use the same formula to monitor how "full" our catalogs are with
respect to aliases.
Kees.


"Larry Crilley" <[EMAIL PROTECTED]> wrote in message
news:<[EMAIL PROTECTED]>...
> I doubt this is documented anywhere.  The maximum number of alias
> entries is going to depend on the defined maxlrecl for the master
> catalog and the length of each alias.  Basically, all the aliases for a
> UCAT are kept in one record in the mastercat.  Assuming your master
> catalog has the maximum lrecl for catalogs, then your max lrecl is
> 32400.  From 32400, you will need to take out the length of the ICF
> connector name cell (typically 52 bytes), the length of the ownership
> cell (at least 20 bytes), and the length of the volume cell (typically
> 22 bytes).  Throw in a few extra bytes for some length indicators and
> this all adds up to about 100 bytes.  Thus, you are left with about
> 32300 for the length of all the alias entries.  Each alias entry will
> have a 2 byte length indicator followed by the actual alias padded with
> 1 extra byte.  
> 
> Using the above 'formula', if each alias is 8 bytes, then each alias
> entry will need 11 bytes in the master catalog record.  This gives you
> 2,936 maximum alias entries.
> 
> So, the actual number depends on the defined max lrecl of your master
> catalog and the length of each individual alias.
> 
> There are products out there that will read your catalogs (including the
> master), and alert you as to when any record is approaching the defined
> maxlrecl.  T-REX is one of those products.
> 
> Hope this helps.
> 
> Larry Crilley
> Dino-Software, LLC
> http://www.dino-software.com/
> 412-734-2853.
> 
> 
> 
> 
> -----Original Message-----
> From: IBM Mainframe Discussion List [mailto:[EMAIL PROTECTED]
> Behalf Of R.S.
> Sent: Wednesday, May 18, 2005 8:39 AM
> To: [email protected]
> Subject: ICF ALIAS limit
> 
> What is the limit for number of aliases in MCAT ?
> Is it documented ?
> -- 
> Radoslaw Skorupka
> Lodz, Poland
> 
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