That looks like a Postgres configuration problem.  EOF is able to load the 
adaptor, plugin, and driver:

INFO er.transaction.adaptor.ConnectionAnalyzer - Trying to create JDBCAdaptor...
INFO er.transaction.adaptor.ConnectionAnalyzer - Successfully created adaptor 
er.extensions.jdbc.ERXJDBCAdaptor

INFO er.transaction.adaptor.ConnectionAnalyzer - Trying to create plugin...
INFO er.transaction.adaptor.ConnectionAnalyzer - Created plugin 
com.webobjects.jdbcadaptor.PostgresqlPlugIn

INFO er.transaction.adaptor.ConnectionAnalyzer - Trying to load JDBC driver 
org.postgresql.Driver...
INFO er.transaction.adaptor.ConnectionAnalyzer - Successfully loaded JDBC 
driver org.postgresql.Driver
INFO er.transaction.adaptor.ConnectionAnalyzer - JDBC driver and plugin are 
loaded,

That and a valid user and password are all that EOF should need.

So it is going to be something like the user name and password are not setup, 
or connections are not allowed from that host, or the database is not running, 
or maybe a networking problem.  Some of those seem unlikely if your database is 
really on the same localhost machine.

Chuck




From: 
<webobjects-dev-bounces+chill=gevityinc....@lists.apple.com<mailto:webobjects-dev-bounces+chill=gevityinc....@lists.apple.com>>
 on behalf of Kwasi O-Ahoofe <koa...@icloud.com<mailto:koa...@icloud.com>>
Date: Tuesday, January 5, 2016 at 1:17 PM
To: "webobjects-dev@lists.apple.com<mailto:webobjects-dev@lists.apple.com>" 
<webobjects-dev@lists.apple.com<mailto:webobjects-dev@lists.apple.com>>
Subject: er.transaction.adaptor.Exceptions - Database Exception occured: 
java.lang.IllegalStateException: _obtainOpenChannel -- 
com.webobjects.eoaccess.EODatabaseContext


I am 'stomped' and 'dead in the water' for this... I have run out of ideas on 
how to resolve the exception below. PS: I can't seem to generate SQL from 
Entity Modeler either..!! [Sorry for lengthy output..]

Running Mac OS X 10.11.2 & WOLips v44 & v 3.7:



Jan 05 10:31:00 ProjectComplianceWonder[65215] WARN NSLog - An exception 
occurred while trying to open a channel: N/A
Jan 05 10:31:00 ProjectComplianceWonder[65215] INFO 
er.transaction.adaptor.Exceptions - Database Exception occured: 
java.lang.IllegalStateException: _obtainOpenChannel -- 
com.webobjects.eoaccess.EODatabaseContext 
com.webobjects.eoaccess.EODatabaseContext@2421cc4: failed to open database 
channel. Check your connection dictionary, and ensure your database is 
correctly configured.
Jan 05 10:31:01 ProjectComplianceWonder[65215] INFO 
er.extensions.eof.ERXDatabaseContextDelegate - KOA_ContractCompliance_Prod10g: 
{plugin = "Postgresql"; username = "contractmonitor"; driver = 
"org.postgresql.Driver"; password = "<password deleted for log>"; URL = 
"jdbc:postgresql://localhost:5432/contractmonitor"; }
Jan 05 10:31:01 ProjectComplianceWonder[65215] INFO 
er.transaction.adaptor.ConnectionAnalyzer - Checking JDBC connection with 
information {plugin = "Postgresql"; username = "contractmonitor"; driver = 
"org.postgresql.Driver"; password = "<password deleted for log>"; URL = 
"jdbc:postgresql://localhost:5432/contractmonitor"; }
Jan 05 10:31:01 ProjectComplianceWonder[65215] INFO 
er.transaction.adaptor.ConnectionAnalyzer - Trying to create JDBCAdaptor...
Jan 05 10:31:01 ProjectComplianceWonder[65215] INFO 
er.transaction.adaptor.ConnectionAnalyzer - Successfully created adaptor 
er.extensions.jdbc.ERXJDBCAdaptor
Jan 05 10:31:01 ProjectComplianceWonder[65215] INFO 
er.transaction.adaptor.ConnectionAnalyzer - Trying to create plugin...
Jan 05 10:31:01 ProjectComplianceWonder[65215] INFO 
er.transaction.adaptor.ConnectionAnalyzer - Created plugin 
com.webobjects.jdbcadaptor.PostgresqlPlugIn
Jan 05 10:31:01 ProjectComplianceWonder[65215] INFO 
er.transaction.adaptor.ConnectionAnalyzer - Trying to load JDBC driver 
org.postgresql.Driver...
Jan 05 10:31:01 ProjectComplianceWonder[65215] INFO 
er.transaction.adaptor.ConnectionAnalyzer - Successfully loaded JDBC driver 
org.postgresql.Driver
Jan 05 10:31:01 ProjectComplianceWonder[65215] INFO 
er.transaction.adaptor.ConnectionAnalyzer - JDBC driver and plugin are loaded, 
trying to connect...
Jan 05 10:31:01 ProjectComplianceWonder[65215] INFO 
er.transaction.adaptor.ConnectionAnalyzer - Error: Exception thrown while 
connecting.
Check exception message carefully.
Jan 05 10:31:01 ProjectComplianceWonder[65215] ERROR 
er.transaction.adaptor.ConnectionAnalyzer - No connection.
Jan 05 10:31:01 ProjectComplianceWonder[65215] INFO 
er.extensions.appserver.ERXApplication -
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