And apparently there are a lot of questions about how Informix authenticates and establishes user connections.I will try go give a generic overview on these subjects. The database system administrator can see the real problem. Either your server is not running or you have your client SQLHOSTS points to the wrong server or port-930 Cannot connect to database server servername.Typically the client cannot obtain the server Even in the official documentation, the administrator guide, is written:To determine whether a client is trusted, execute the following statement on the client computer: rlogin hostname If you log in successfully
Meaning we have not only the user id, but also it's secret key.These connections are used mostly in applications that use JDBC, ODBC, .NET, PHP (PDO), Perl (DBI) etc. By default, the /etc/shadow permissions are 600, owned by user root, and not readable by user informix. JackLiNew memory grant query hint MIN_GRANT_PERCENT came to rescue June 9, 2016In SQL Server 2012 SP3, we made supportability improvements in the memory grant space. And this error occur on connection to database.
When does this error occur ? For more information about each one consult the documentation or use "finderr errorcode":-908 Attempt to connect to database server (servername) failed.Usually means some problem on the TCP level. The way it works is exactly the same as the "r" services (rshell, rcmd, rlogin).The configuration is done using the network connectivity files, /etc/hosts.equiv and ~/.rhostsNon trusted connectionsThese connections are the Error 651 In this situation the trust configuration is done entirely through SQL instructions.
I appreciate any comments, corrections and topic sugestions. Unmount and mount the file system where INFORMIX is installed with default settings. in your particular case...SYSTEM is probably a windows machine... Let's see the list of sessions:[email protected]:informix-> onstat -uIBM Informix Dynamic Server Version 11.50.UC2 -- On-Line -- Up 09:57:30 -- 88064 KbytesUserthreadsaddress flags sessid user tty wait tout locks nreads nwrites4780c018 ---P--D
The database server does not accept (or cannot find) your account password. Forum New Posts Today's Posts FAQ Calendar Forum Actions Mark Forums Read Quick Links View Site Leaders dBforums Database Server Software Informix Error -951 If this is your first visit, be This message appears with Version 6.0 and later. I just explained the privileges because we need to go through two steps for establishing a connection:First Informix has to make sure we are who we pretend to be.
In general, each Informix error contains the following information: • The Informix Error Code or Informix Error status • The message text. http://www-01.ibm.com/support/docview.wss?uid=swg21607817 Use pwconv and pwunconv utilities to add people to the system and create the /etc/passwd file as needed. Informix Odbc Incorrect Password Or User We have a session, on behalf of user "fnunes" but the "Current Database" is not defined. Informix Sql Error Change the permissions on /etc/shadow so that user informix can read it.
The ideas and opinions expressed in this blog are personal and in no way represent IBM positions, strategy or opinions. this content This can be accomplished with 'chmod 644 /etc/shadow' done as root. Informix also doesn't require the user to be able to establish a session (ssh or telnet for example) on the database server at the OS level. This message appears with Version 6.0 and later. Informix Allow Remote Connections
Informix Tools Loading... You can use this file so specify a user and password, per host that you want to connect. There are additional columns related memory grants in sys.dm_exec_query_stats (https://support.microsoft.com/en-us/kb/3107398) and query_memory_grant_usage extended events to help troubleshoot memory grant issues.... weblink Advertisement dBforums Brief Subscribe to dBforums Brief to receive special offers from dBforums partners and sponsors Top Helpers healdem - 59 mark.b - 55 Pat Phelan - 54 ranman256 - 23
These include:Single sign-on (introduced in IDS 11.50)Password encryptionSSL connectionsThese topics may be covered in future articles. But we have another situation where we must establish trusts between systems. Are you running under unix(which type/version) or windows (which type/version ?
In particular, you may found explicit instructions to not use the ~/.rhosts file.The main reasons for these are two facts:These files are not specific for Informix, and in fact they were I'm test in the server machine (WIN2000). Similar error messages are repeating frequently within a second, these will fill up the message logs file and filesystem. #- Informix message logs -# 10:22:45 listener-thread: err = -951: oserr = 0: Document information More support for: Informix Servers Software version: 11.5, 11.7, 12.1 Operating system(s): AIX, Linux Reference #: 1607817 Modified date: 2013-07-22 Site availability Site assistance Contact and feedback Need support?
This makes the informix user independent of the system administrator for configuring the trusts, and additionally doesn't interfere with "r" services if they're in useThere is another security option that defines Thanks, SQLServerF1 Team Information about Informix Error Codes or Status Codes or Exit Codes and Error Messages on Windows, Linux Operating Systems. I'm testing with dbaccess (in connection tab) and remote connection (ODBC). check over here I haven't yet mentioned the .netrc file...
JackLiWhy am I getting NULL values for query_plan from sys.dm_exec_query_plan? If you setup the file and try to make a trusted connection you'll instead make a non-trusted connection. It could probably accept connections from users not recognized by the OS (either authenticated internally or with PAM or both) and have some parameter to define a default user for the SQLServerF1 SQLServerF1 - In-Depth Blogs on SQL Server, Information about SQL Server Conferences and Events, Frequently asked questions, SQL Server Trainings Home SQL Server FAQ SQL Server Errors SQL Server Events
Stuff like that. The connection authentication will follow the rules for implicit connections, or will use a different authentication mechanism if server "B" is setup with PAM authentication (more on this later)Non trusted connectionsWe rws Reply With Quote 09-06-02,15:46 #5 jlturco View Profile View Forum Posts Registered User Join Date Aug 2002 Location Quilmes Posts 3 Help... It may be necessary to remove the Informix registry entries and remove and recreate the user informix and group Informix-Admin.
Several symptoms can cause such behaviour: SQLHOSTS file mispelled entries; DBSERVERNAME or DBSERVERALIASES onconfig parameters have no related entries in the SQLHOSTS file; NIS or LDAP servers misconfiguration or maintenance; INFORMIXDIR ps -ef | grep oninit lists 'oninit' processes as owned by informix and not root. I'll point out a few less known aspects of Informix authentication.This article in no way tries to substitute the official documentation, but I hope this can be used as a concentrated