Console logs disappear quickly When I debug any app (native or hybrid), the console device logs they appear in the logcat but after 2+ min they automatically cleared out by Eclipse - though my device does not go in sleep mode.

It becomes difficult for me to check the logs and every time I have to first copy the logs to a text editor and then checking the logs.

Is there any settings required in eclipse or device?
The reason it's cleared because the log has exceeded the maximum limit of displayed messages on LogCat. You can change the limit by following the answer on Stack Overflow:

The LogCat messages were simple getting cleared because the buffer had run out of space (receiving too many new messages), which is a simple setting change in Eclipse.
To fix, go to Window &gt; Preferences &gt; Android &gt; LogCat
and increase the limit for &quot;Maximum number of LogCat messages to buffer&quot;. Set it to 0 for unlimited size, or a really big number. But keep in mind, anything below 10000 fills up real fast.