# Using Vacuumdb  in PostgreSQL

I read in the PostgreSQL docs that vacuumdb or vacuum should be used on the databases every day. I have been running it manually the last couple of days and it has made a difference on query response times. I highly recommend using it.  
  
To vacuum one database from the command line.  
  
  

**vacuumdb -d MyDB -v  -z -U postgres** 

  
  
  
To vacuum one database from the command line.  
  
  
  

**vacuumdb -a -v  -z -U postgres** 

  
  
\-d = database name  
\-v = verbose output  
\-z = analyze  
\-U = username  
\-a = vacuum all databases