Anonymous block are created on client and subprograms are stored on server.

It is possible to call subprograms from anonymous block.

Hi

Ananymous is also PL/SQL block but it is not named. So that these are not stored server for further reference. We can name the anonymous but still we can use withing the sub-program. Subprogram is a named PL/SQL block and will be stored in server. This is avaialble for reference.

Procedure can be called from anonymous block and reverse is not possible.

Regards
Ravi

dont confuse subprogram with stored procedure.

both anonymous block and subprogram are executed on the server. ALL pl/sql and SQL are executed on the server (ie by ORACLE). The anonynmous block is unnamed while the subprogram is named and can be called from the anonymous block and passed arguments as well. both the anonymous block and the named pl/sql subprogram can call external programs (like a C) program as well.