%META:TOPICPARENT{name="ConfigureTroubleshootDBMSsForDataAccess"}%
=Pre-Requisites for Connections to Informix=

==Basic DBMS & DBMS Version Support==

* [[Do OpenLink drivers connect to Informix?]]  
* [[WhichVersionsOfInformixAreSupportedByOpenLinkDrivers|Informix version support]]  
* [[HowCanIDetectMyInformixDBMSVersion|Detecting the Informix DBMS version]]  

==Database Native Client Requirements==

* [[WhatIsTheInformixNativeClient|Understanding the Informix native client]]  
* [[WhenDoINeedTheInformixNativeClient|When do I need the Informix native client?]]  
* [[WhereCanIGetTheInformixNativeClientAkaInformixConnectInformix-NetI-Net |Obtain the Informix native client (also known as "Informix Connect", "Informix-Net", and "I-Net")]]  
* [[HowDoIConfigureTheInformixNativeClient|Configure the Informix native client]]  

==Key Database Native Variables (Set Before <nop>OpenLink Install)==

* [[WhatValueDoesTheINFORMIXDIREnvironmentVariablePass|INFORMIXDIR]]  
* [[WhatValueDoesTheINFORMIXSERVEREnvironmentVariablePass|INFORMIXSERVER]]  

==Database Native Settings You Need to Know==

* [[HowCanIFindMyInformixInstanceName|Identify the Informix instance name]]  
* [[HowCanITellIfInformixIsStartedInSocketsOrSharedMemory|Identify the Informix startup mode (i.e., sockets or shared memory)]]  
* [[HowCanIFindMyInformixTcpServiceName|Identify the Informix tcp service name]]  
* [[HowCanIFindMyInformixTcpPortNumber|Identify the Informix tcp port number]]  
* [[HowCanIFindMyInformixDatabaseServerHostnameOrIPAddress|Identify the Informix database server hostname or IP address]]  
* [[Identify the Informix database name]]  

==Database Configuration for Unicode==

* [[InformixUnicodeConfig|Unicode Configuration]]

==Database Configuration for XA Support==

* [[InformixConfigXASupport|XA Configuration]]