Programmer's Guide to the Pro*Ada Precompiler | ![]() Library |
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The addition of the UNSAFE_NULL option eases migration from Oracle Version 6 to Oracle7. If you are upgrading to Oracle7 and use DBMS=V6 when precompiling, you will be unaffected by the addition of this option. Precompiler applications using DBMS=V6 maintain full compatibility with Oracle v6.
The UNSAFE_NULL option has no effect on host variables in an embedded PL/SQL block. In that case, you must use indicator variables to avoid ORA-01405 errors.
For more information, see the section "Fetching Nulls Without Indicator Variables" .
To enable tasking in your program, you must enable multi-threading. Do this by coding the statement
EXEC SQL ENABLE THREADS
in your main Pro*Ada program, before any calls are made to subprograms that use tasking. When you precompile your Pro*Ada sources, you also must use the command-line option THREADS, specifying the value YES. For example
proada my_file ... THREADS=YES
See the section "Tasking" for more information.
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