title: ORA -12953: The request exceed the maximum allowed database size of 11GB
body: <p>We have oracle express edition 11g i.e. ORACLE XE 64bit. There is 10GB available space in the database. But system tablespace is 98% full, there are 2 system tabalespaces. 
  When we (our startup team) try to ADD or RESIZE the datafile or tablespace using ALTER command we get following error:</p>
  
  <p>ORA -12953: The request exceed the maximum allowed database size of 11GB</p>
  
  <p>What should be done to add or resize the datafile?</p>
  
  <p><a href="https://i.stack.imgur.com/D2iPF.jpg" rel="noreferrer"><img src="https://i.stack.imgur.com/D2iPF.jpg" alt="error"></a></p>