JDBC Bound variable limit for sql queries

Question

I need to know if there is a limit on the no of variables that can be bound using a prepared Statement ?
And somebody insisted that the bound variable limit is only when the variables belong to certain types of operators eg:
A query like this :
select * from table where column in(?, ?, ?.....)
cannot have more than 1000 variables but
a query like this
select * from table where column in(?, ?, ?) and column1=? and column2=? and column3=? ... and so on ..... can have more than 1000 bound variables ?
Also is this dependent on the driver or inherent to Oracle versions ?

Answer 1

Per the Oracle documentation:
Stage 5: Bind Any Variables At this point, Oracle knows the meaning of the SQL
statement but still does not have enough information to run the statement. Oracle
needs values for any variables listed in the statement; in the example, Oracle needs a
value for department_id. The process of obtaining these values is called binding
variables.
A program must specify the location (memory address) where the value can be found.
End users of applications may be unaware that they are specifying bind variables,
because the Oracle utility can simply prompt them for a new value.
Because you specify the location (binding by reference), you need not rebind the
variable before reexecution. You can change its value and Oracle looks up the value on
each execution, using the memory address.
bind variables are stored in the PGA if running a dedicated server. Shared servers use the SGA. The PGA is fixed and OS specific.