Informix Error Messages and Error Codes From Error 854
Informix Error Code -854 Back end not found. Or back end is busy.
In DOS, the application cannot establish a connection to the local INFORMIX-SE engine or to the INFORMIX-NET PC communications module.
The SE engine (for accessing a local database) or the INFORMIX-NET PC communications module (for accessing a remote database) must be loaded before trying to connect to it by means of, for example, a DATABASE statement. To load the SE engine, run PSTARTSQ. To load the INFORMIX-NET PC communications module, run REMSQL.
If the SE engine or the INFORMIX-NET PC communications module has previously been loaded, and you get this error message, either another application currently has a connection to the SE engine, or the INFORMIX-NET PC communications module (they can have only one connection at a time), or the current application encountered an internal error and lost the connection.
If another application has a connection to the SE engine or to the INFORMIX-NET PC communications module, you must first release that connection before you can connect the current application. If the other application is a 4GL or an ESQL/C program, that application releases its connection by executing a CLOSE DATABASE statement, calling the SQLEXIT( ) function, or exiting.
In extreme situations where an internal error has occurred, you must exit the application and kill the SE engine or the INFORMIX-NET PC communications module from the DOS command line. To kill the SE engine, run PSTARTSQ with the -T option. After you kill the SE engine, run PSTARTSQ with no options to reload it.To kill the INFORMIX-NET PC communications module, run SETNET with the -T option. After you kill the INFORMIX-NET PC communications module, run REMSQL to reload it.
This error message also might appear when a client Windows application uses the wrong .DLL file to connect to a database server across a network. Client Windows applications that work with INFORMIX-NET PC Version 4.1 (such as Version 4.1 ESQL/C) can also work with INFORMIX-NET for Windows Version 5.01. Check to see whether INFORMIX-NET PC Version 4.1 and INFORMIX-NET for Windows Version 5.01 reside on the same client computer concurrently. If so, check that Version 5.01 of the LDLLSQLW.DLL file appears in your PATH environment variable setting before Version 4.1 of the LDLLSQLW.DLL file. In addition, Version 4.1 of the LDLLSQLW.DLL file must not reside in the current directory, the Windows directory, the Windows \SYSTEM directory, or the directory that contains the executable file of the application that you are running.
Above are list of Informix Error Messages and Errors Codes or Status Codes or Exit Codes along with Error and Warning messages received while performing certain operation against Informix applications or related products.
What are Informix Error Messages?
All Informix messages returned by the Informix server are assigned an error code.
In general, each Informix error contains the following information:
• The Informix Error Code or Informix Error status
• The message text. This text is usually returned with the Error code. Some messages employ word substitution, where the word substituted represents the system-replacement of a term more specific to the occurrence.
• An explanation of how the error may have occurred.
Hope this was helpful.
Information about Informix Error Codes or Status Codes or Exit Codes and Error Messages on Windows, Linux Operating Systems.