Timed out error while Oracle pulls data from windchill

Windchill version - 12.1

Oracle version - R12

on premise system - yes

Hello, 

Query 1 :::>>>SELECT A0.*
 FROM ext.thermoking.publish.PLMItemOut A0
WHERE (A0.changeId >= 94842397) AND ((A0.plantcode = 'VIG')) AND (ROWNUM <= 300)
 ORDER BY A0.changeId
 joins=null
 useBind=true [94842397, VIG, 300]

This is the query I am using