title: oracle regexp_replace - remove space between specific words
body: <p>Need some help in regexp_replace with Oracle. 
  I have some names where the middle name initials are separated with Space. I have to remove that space only.</p>
  
  <p>John E. W. Doe       --> John E.W. Doe<br>
  Jane W. B. Dane, Jr. --> Jane W.B. Dane, Jr. </p>