pg_dbinfo
Name
pg_dbinfo -- returns a list of current open connection/result handles
Synopsis
pg_dbinfo connections|results ?conn?
Description
   pg_dbinfo returns a list of connection\result handles that are currently open. The first argument is either connections or results. If the first argument is results, then a second argument needs to be present, specifyin the connection.
  
Arguments
- connections|results
-       Either specify connections if you want the connection handles, or results if you want the result handles.
      
- conn
-       The handle of the connection, if results if specified for the first argument.
      
Return Value
  A Tcl list of connection handle names