RPC calls to stored procedures with array parameters – PB Docs 2019

If your application performs a remote procedure call (RPC) that
passes an array parameter to an Oracle stored procedure, the array size
in the stored procedure must not be zero. If the array size is
uninitialized (has no size), the PBVM returns an error.

For Oracle 18c and 19c, the string array parameter can only be the
VarChar type and VarChar2 type, and cannot be the NVarChar2, Char, or
NChar type.

For Oracle 18c and 19c, the date array parameter can only be the
Date type (cannot be the DateTime type).