@Abdul Saboor Try to inncrease memory on your mappers. Take a look at mapreduce.map.memory.mb, mapreduce.reduce.memory.mb, mapreduce.map.java.opts and mapreduce.reduce.java.opts. In the below example I have sent it to 1GB, please substitute the values according to your environment sqoop import -D mapreduce.map.memory.mb=1024 -D mapreduce.map.java.opts=-Xmx768m --connect jdbc:oracle:thin:@oradbhost:15xx:DB --table test --username SYSTEM -P -m 1 Revert ... View more

@Bill Brooks That error is due to the timeout setting you can alter that by adding the server.startup.web.timeout property (measured in seconds) to /etc/ambari-server/conf/ambari.properties you can change the timeout to something like this: server.startup.web.timeout=120 Incidentally, the ambari could be accessible have you tried accessing the http://ambari-server:8080 ... View more