Re: hosts.equiv and ESQL/C

Jaswant Bhardwaj (jaswant@highland.eng.octel.com) wrote: > There is a BIG bug in ESQL/C (version 5.01) of INFORMIX. > It requires that the 'user' host be listed in /etc/hosts.equiv > of the server(dbhost) even if it is listed in $HOME/.rhosts of the > user. If it is not listed, the ESQL/C routines will work > intermittently. Here is what happens if the host x is not listed > in /etc/hosts.equiv on server: On host x, user tries to run ESQL/C application and > he get the error > Error -956: The host is not listed in /etc/hosts of the remote host We have encountered this rather outrageous problem also. The problem has persisted for several years and is still in 5.03 UC1 which we are running. In our case, the symptoms would not appear if the client and server were on DIFFERENT subnets in our network. We filed a call, as listed below but never got a problem number assigned. Below is our log entry showing how we got worked around this for a user "prod". Ken Miles kenm@vcd.hp.com ------------------ > Placed call to Informix (Case #289068). > > The description for error -956 > "Client is not in /etc/hosts.equiv on the remote host." > > was NOT TRUE! Putting client in fully qualified form or with host > name only made no difference: > > hpvcp012.vcd.hp.com > hpvcp012 > > Remsh, rlogin etc. all worked fine. > > It turned out that the contents of the .rhost file for the user in question > caused the problem. For a user name of "prod", if we put the following line > into the prod .rhost file on the server the client could NOT CONNECT > if the client was on the same subnet as the server: > > hpvcp012 prod > > (If the client was on a different subnet the client would be able to connect). > > For a client on the same subnet if we put an entry into the .rhost file in > either of the following forms it will work: > > hvcp012.vcd.hp.com prod > or: > + prod