= doc.FAQ.MyApplicationsFailToConnectAfterIUpgradedMy1x3xDriversTo4x5xWhatDoIDo

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*User creates a JDBC connection URL. For example: 
{{{
jdbc:openlink://localhost:5000/SVT=Ingres II/DATABASE=iidbdb/UID=ingres/PWD=ingres/JDBCAGENT=jodbc 
}}}
 
*The Broker associates all JDBC connection attempts with one of the JDBC Domains that appear in the [Domain] section of the Session Rules Book (oplrqb.ini). For example: 
{{{
[Domain Aliases] jodbc = jodbc judbc = judbc jdbc = jdbc 
}}}
 
*The Broker uses the Domain Alias to resolve the connection using one of the JDBC Mapping Rules from the [Mapping Rules] section of oplrqb.ini. For example: 
{{{
[Mapping Rules] jodbc:*:*:java:*:*:* = accept jodbc_client judbc:*:*:java:*:*:* = accept judbc_client jdbc:*:*:java:*:*:* = accept jdbc_client *:*:*:java:*:*:* = accept judbc_client 
}}}
 
*The Mapping Rules associate the connection attempt with a JDBC agent configuration section. For example: 
{{{
[jodbc_client] Program = jodbc_sv.exe CommandLine = ;+debug ReUse = never 
}}}
 
*The agent configuration section controls which JDBC agent is spawned to service the connection. In the above instance, jodbc_sv.exe is spawned.  
*The JDBC agent spawns the database agent that corresponds to the SVT parameter of the JDBC connection URL. The following sections of the Rules Book shows how SVT=Ingres II causes the JDBC agent to spawn the oig2_sv database agent: 
{{{
Domain Aliases] Ingres II = oig2 [Mapping Rules] oig2:*:*:*:*:*:* = reject The Ingres II Database Agent is not configured [generic_oig2] Program = oig2_sv.exe Environment = INGRES_II OpsysLogin = Yes ReUse = never 
}}}
 
{{{
jdbc:openlink://localhost:5000/DSN=My Ingres Data Source/UID=ingres/PWD=ingres 
}}}


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