Setting up shared memory connection
Red Valsen, on IDS 7.30.UC2 / Solaris 2.6 x86, wanted a shared memory alias alongside a TLI connection and asked whether /etc/services needed an entry. Art S. Kagel said the shared memory service name is a dummy, not needed in /etc/services, but must not match any network service name of that server (poll storm). Jonathan Leffler said it only needs to be unique among olipcshm entries.
Auto-generated by Claude from the posts below — may be imperfect; read the full thread.
I'm using IDS 7.30.UC2 on Solaris 2.6 x86. I have an instance up and running using a tli connection. I would like to set up an alias to allow local users shared memory access. I have added another line in the sqlhosts file, and the alias and another NETTYPE in my onconfig file. Is it necessary to define another service in /etc/services for this connection method? If so, why is it necessary if the protocol in /etc/services will be defined as "tcp?" If not, what servicename do I reference in the sqlhosts file? Are there any other steps to take -- parameters which require modification -- before I reinitialize my instance? I've rtfm'ed looking for explanation of this -- or at least an example of multiple connection methods and corresponding file entries. Couldn't find it. If it's there, tell me where, too. tia
Did you add the DBSERVERALIASES line in the onconfig file? -- James Edmiston Quest Information Systems, Inc. www.questisinc.com
yes James Edmiston wrote: > Did you add the DBSERVERALIASES line in the onconfig file? > > -- > > James Edmiston > Quest Information Systems, Inc. > www.questisinc.com
Red Valsen wrote: > > I'm using IDS 7.30.UC2 on Solaris 2.6 x86. I have an instance up and > running using a tli connection. I would like to set up an alias to > allow local users shared memory access. I have added another line in > the sqlhosts file, and the alias and another NETTYPE in my onconfig > file. Is it necessary to define another service in /etc/services for > this connection method? If so, why is it necessary if the protocol in > /etc/services will be defined as "tcp?" If not, what servicename do I > reference in the sqlhosts file? Are there any other steps to take -- > parameters which require modification -- before I reinitialize my > instance? > > I've rtfm'ed looking for explanation of this -- or at least an example > of multiple connection methods and corresponding file entries. Couldn't > find it. If it's there, tell me where, too. The service name used for shared memory connections is a dummy. It does not have to be in /etc/services at all. There is just one caviat: DO NOT USE THE SAME SERVICENAME AS ANY OF THE NETWORK CONNECTIONS for that server. Doing so seems to cause a poll storm using up resources. You can use an actual service name used by ANOTHER server or you can use a dummy name like: shmservice Art S. Kagel
Red Valsen wrote: > > I'm using IDS 7.30.UC2 on Solaris 2.6 x86. I have an instance up and > running using a tli connection. I would like to set up an alias to > allow local users shared memory access. I have added another line in > the sqlhosts file, and the alias and another NETTYPE in my onconfig > file. Is it necessary to define another service in /etc/services for > this connection method? No. The name used just needs to be unique among the olipcshm services on the local host. > If so, why is it necessary if the protocol in > /etc/services will be defined as "tcp?" If not, what servicename do I > reference in the sqlhosts file? Typically, I use the same name as the main oltlitcp connection, but I don't think that is necessary. > Are there any other steps to take -- > parameters which require modification -- before I reinitialize my > instance? Apart from ensuring that your system resources are adequate (/etc/system), I don't think so. > I've rtfm'ed looking for explanation of this -- or at least an > example of multiple connection methods and corresponding file > entries. Couldn't find it. If it's there, tell me where, too. Sometime earlier this year I posted my sqlhosts file -- shortly before the disk got trashed. Try DejaNews (http://www.deja.com). Hmm, I'm not sure what to suggest as a way of reducing the number of postings. -- Jonathan Leffler (jleffler@informix.com, jleffler@earthlink.net) Guardian of DBD::Informix v0.60 -- see http://www.perl.com/CPAN #include <disclaimer.h>