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Informix Error 956

An example: nameserver 192.168.112.2 nameserver 9.64.162.21 How does Informix use the DNS? But we can clear any of the caches by using "onmode -wm NS_CACHE=..." and using a timeout of zero. What problems can we face? On the Suse(server), $HOME/informix/.rhosts file has an entry of SCO(client) machine name. 5. his comment is here

Do ponto de vista do SO, todos estes processos parecem iguais (chamam-se oninit), mas cada um tem um trabalho específico e corre threads específicas do motor. United States English English IBM® Site map IBM IBM Support Check here to start a new keyword search. But note that the functions signatures don't have any way to ask for this, so an alarm would have to be setup, so that the process would receive a signal and This operation cannot be completed because the specified remote computer does not recognize the name of the client computer (the local host, whose name the hostname command returns). http://www-01.ibm.com/support/docview.wss?uid=swg21265434

To start viewing messages, select the forum that you want to visit from the selection below. Took 2.003324 secondsNext: refreshCalled res_init()Next: 1.1.1.3Unknown host (1.1.1.3). ERESTARTSYS (To be restarted)101 0.918564 --- SIGINT (Interrupt) @ 0 (0) ---102 0.000931 +++ killed by SIGINT +++And the explanation: Lines 1-5 the program starts and asks for the IP address. Answer Here's a list of things to check when facing such a problem: 1) Double-check the SQLHOSTS file for missing or mispelled entries regarding the DBSERVERNAME and DBSERVERALIASES onconfig parameter values;

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  2. Mais especificamente define se o sistema usa ficheiros, NIS, servidores de DNS ou outros mecanismos e a ordem porque o faz.
  3. O impacto do DNS no Informix foi o mais votado.
  4. Read 28 May 12 - Bloor - David Norfolk on the recent Informix benchmark "pretty impressive results"...
  5. Let's prove it!Again I traced a connection, looking at MSC VP.
  6. Podemos listar as threads com: [email protected]:fnunes-> onstat -g athIBM Informix Dynamic Server Version 11.70.UC4 -- On-Line -- Up 00:17:01 -- 411500 KbytesThreads: tid tcb rstcb prty status vp-class name 2 5583fa38

This is not a "system call" for strace. Meanwhile, just before that I changed the /etc/resolv.conf and put 192.168.112.5 Lines 80-99 I insert another IP address (1.1.1.3) and it goes to the new DNS server (192.168.112.5). Read 22 Mar 12 - developerWorks - Optimizing Informix database access... Informix just calls gethostbyaddr() (or equivalent fiunctions) Now, let's see the same for the second attempt.

Pessoalmente habitualmente uso o número do porto directamente para evitar mais esta consulta..Depois, se o nome de uma máquina foi usado, o cliente terá de o converter para um endereço IP. And it can save you if your DNS blows away (you could then add entries to the /etc/hosts file even temporarily). Paul. Of course this is not supported.

And again, Informix just calls gethostbyaddr()... Um exemplo: nameserver 192.168.112.2 nameserver 9.64.162.21 Como é que o Informix usa o DNS? onlinedomus.com)  into an IP address (e.g. 89.1.2.3) and the opposite. Nas seguintes tal não acontece por razões de performance.

Mas o que acontece quando algo está mal? http://www.tek-tips.com/viewthread.cfm?qid=575330 Your DNS servers and DNS admins will appreciate it if you have high connection rates Consider including "files" in the /etc/nsswitch.conf configuration. So, the problem in how it works is that if you want to change the policy (/etc/nsswitch.conf) or the DNS servers (/etc/resolv.conf), the Informix processes will not pick up the change. The problem is not on sqlhosts nor .netrc.

Primeiro, o processador virtual do Informix da classe MSC processa os  pedidos de forma sequencial. this content Como referi acima, apenas com a utilização de um debugger podemos capturar a chamada à gethostbyaddr(). So, in critical situations it may be useful that the DBAs can act immediately and add the IP addresses in the trusted lists. And this causes a problem.

There are two additional considerations we need to be aware. Please don't try this at home!.. For that I created a simple program (line numbers included): 1 #include 2 #include 3 #include 4 #include 5 #include 6 7 int main(int argc, char **argv)8 {9 struct hostent *hp;10 weblink Network problems prevent the connection to the DNS serversIf this happens, the requests sent by the MSC VP will have to timeout (typically a few seconds) before the OS call returns.

Aflter do "dbaccess" in HPUX I can see the interface of dbaccess, and then, when I try to select the database ("exampledb") I get the follow message: "956: Client host or If the "ip" provided is "refresh" then it calls res_init(). On the SCO machine(client), /etc/hosts.equiv file has an entry of the my suse server. 4.

It reports the information returned by the resolver subsystem and the time it took.

Smail(1 intervención) el 10/08/2004 16:34:55Necesito si alguien me puede decir a que se debe el error -956 : Client host or user is not trusted by server que me tira la For that it calls the gethostbyname() function. In particular it can define if the system uses files, NIS, the DNS servers or other mechanism and the order it uses. Took 2.0"..., 46) = 4654 0.000071 write(1, "Next: ", 6) = 655 0.000267 read(0, "1.1.1.2\n", 1024) = 856 0.000071 socket(PF_INET, SOCK_DGRAM|SOCK_NONBLOCK, IPPROTO_IP) = 357 0.000077 connect(3, {sa_family=AF_INET, sin_port=htons(53), sin_addr=inet_addr("192.168.112.2")}, 16) =

If you have a problem in DNS, and your reverse DNS queries start to fail, your trusted connections will fail if they use the names and not the IP addresses. Took 2.010235 secondsNext: 1.1.1.2Unknown host (1.1.1.2). Feel free to comment, email me etc. check over here This requires a bit more work and preliminary explanations.

Digital Experience Platform or DXP, User Experience Platform or UXP, Customer Experience Platform or CXP - you… READ MORE Top 10 Features of Liferay Forms The Forrester Wave report identifies that Liferay DXP Demo CRM Consulting Business Intelligence Reporting Customer Case Studies Teradata Managed Services Oracle, SQL Server, DB2 Optimization Webinar Recordings Sign-up for Our XTIVIA Newsletter e-Books & Reports  What is This would be a great place to call res_init() by the way... For reasons that I'll explain later, I will turn off the NS_CACHE feature (Informix 11.7) and I will restart the engine.

See the UNIX manual pages on HOSTS.EQUIV(5) for more information. Beside the normal disclaimer, I'd like to state that most of the information presented here lies a bit far from my regular competencies. Read 9 Mar 11 - DBTA - Database Administration and the Goal of Diminishing Downtime...