Using Logback classic 1.0.6 (slf4j 1.6.5)
Running on a Weblogic server 10.3.5.

I just added the DBAppender and have some unusual errors that get generated.




My append statement works fine and it does log entries to the database:
       <appender name="DataBase" class="ch.qos.logback.classic.db.DBAppender">
             <connectionSource class="ch.qos.logback.core.db.JNDIConnectionSource">
                    <param name="jndiLocation" value="UCS_DS." />
             </connectionSource>
       </appender>

Weblogic reports the following about the datasource creation (This pool on my local machine starts at 6 and grows by 2 up to 40 connections):

<BEA-001177> <Creating Connection Pool named UCS_DS, URL = jdbc:oracle:thin:@localhost:1521:XE, Properties = user=logback;.> 
<BEA-000626> <Free resources in pool "UCS_DS" will be tested every "120" seconds.> 
<BEA-001066> <Delaying 6 seconds before making a UCS_DS pool connection.> 
<BEA-001516> <Connection Pool "UCS_DS" connected to Database: "Oracle", Version: "Oracle Database 10g Express Edition Release 10.2.0.1.0 - Production".> 
<BEA-001517> <Connection Pool "UCS_DS" using Driver: "Oracle JDBC driver", Version: "11.2.0.2.0".> 
<BEA-001066> <Delaying 6 seconds before making a UCS_DS pool connection.> 
<BEA-001066> <Delaying 6 seconds before making a UCS_DS pool connection.> 
<BEA-001066> <Delaying 6 seconds before making a UCS_DS pool connection.> 
<BEA-001066> <Delaying 6 seconds before making a UCS_DS pool connection.> 
<BEA-001066> <Delaying 6 seconds before making a UCS_DS pool connection.> 
<BEA-000628> <Created "6" resources for pool "UCS_DS", out of which "6" are available and "0" are unavailable.> 
<BEA-001124> <Created Connection Pool named UCS_DS.> 
<BEA-001174> <Creating Data Source named UCS_DS, JNDI Name = UCS_DS.> 
<BEA-001512> <Data Source UCS_DS has been successfully created.> 

But this error is thrown quite frequently.

20:38:56,700 |-ERROR in ch.qos.logback.classic.db.DBAppender[DataBase] - problem appending event java.sql.SQLException: Cannot call commit when using distributed transactions at java.sql.SQLException: Cannot call commit when using distributed transactions
        at      at weblogic.jdbc.wrapper.JTAConnection.commit(JTAConnection.java:355)
        at      at ch.qos.logback.core.db.DBAppenderBase.append(DBAppenderBase.java:116)
        at      at ch.qos.logback.core.UnsynchronizedAppenderBase.doAppend(UnsynchronizedAppenderBase.java:88)
        at      at ch.qos.logback.core.spi.AppenderAttachableImpl.appendLoopOnAppenders(AppenderAttachableImpl.java:48)
        at      at ch.qos.logback.classic.Logger.appendLoopOnAppenders(Logger.java:282)
        at      at ch.qos.logback.classic.Logger.callAppenders(Logger.java:269)
        at      at ch.qos.logback.classic.Logger.buildLoggingEventAndAppend(Logger.java:470)
        at      at ch.qos.logback.classic.Logger.filterAndLog_0_Or3Plus(Logger.java:424)
        at      at ch.qos.logback.classic.Logger.info(Logger.java:628)