The general format is:
CALL [schema.] item_to_call
CALL [schema.] [package.] item_to_call [INTO :host_variable [[INDICATOR] :indicator_var] ]
CALL [schema.] [type.] item_to_call [INTO :host_variable [[INDICATOR] :indicator_var] ]
item_to_call:function [@dblink] (expr,...)
procedure [@dblink] (expr,...)
method [@dblink] (expr,...)
indicator_var:Specify the value or condition of the host variable.
Example 1:
CALL my_procedure(3, 4)