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With z/OS 1.2 and later, there are several new IBM TCP resolver
configuration directives.  One directive that affects SAS is the SEARCH
directive.  This new directive is intended to replace the old
DOMAIN/DOMAINORIGIN directive, and the two directives are mutually
exclusive.  If both are coded, then the one that appears last will
override the other.

Any z/OS 1.2 and later site making use of the new SEARCH directive, must
also include the DOMAIN/DOMAINORIGIN directive in order for the SAS/C
resolver to work correctly.  An alternate resolution is to run SAS with
the SAS/C Transient library V7.50.  Please refer to SAS note  #010071 
to obtain the SAS/C Transient library V7.50.

For SAS applications using TCP/IP to run successfully, the DOMAIN
directive should be included in the resolv.conf file (or TCPDATA file)
first before the SEARCH directive.  For the IBM resolver(s), the SEARCH
directive will override the DOMAIN directive while the SAS/C resolver
will ignore the SEARCH directive and use the DOMAIN/DOMAINORIGIN
directive, and both resolvers will be happy.

Attempting to use the SEARCH directive only and not the
DOMAIN/DOMAINORIGIN  will result in the following message:

   LSCX904 **** WARNING **** ERRNO = EHOSTUNREACH
   Generated in GHBN called from  WQSHOST(DWQSHOS), offset 000074
   Unexpected failure in sendto, reason code 00000291.

There are other issues relating to the new TCP/IP directives, which are
being investigated at this time.

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