Trying to find pl/sql that will show you what script is running

Question

I'm looking for a way, inside sql, to find the name of an executing/running script from inside the script itself.
For example, I have a master script called run.sql with these contents:
@@a.sql
@@b.sql
exit
A.sql has these contents:
spool a.log
select ora_database_name from dual;
spool off;
B.sql has these contents:
spool b.log
select sys_context('userenv','current_schema') from dual;
spool off;
Is there a way in A.sql and B.sql to (dynamically) find out the name of the script? E.g.
A.sql:
select script_name into script from dual;
spool script.log
Where "script_name" is the actual code or variable or whatever to find out what the script is called.
Some variables such as database_name, current_schema, etc can be found dynamically (on-the-fly), but is there a way to do this with the script that's running (short of hunting from v$session and trimming the sql_text, or hard-coding the name in the spool command)?
Also, if you're in sqlplus and you "get a.sql" (into the buffer) then you can save or list, or whatever, and it implicitly knows what script you're referring to. Is this value stored in some sort of variable anywhere?
This sort of thing is easy to do in unix shell commands, but is there a way to do this in Oracle?

Answer 1

The only way to do that is to write better SQL. For example:
echo off
INSERT /* script name = myinserts.sql */ INTO t1 SELECT * FROM t2;
SELECT /* script executing is myscript.sql */ col1, col2, col3
FROM mytable;with labelled statements.
Then you can find the answer by looking in numerous places in the dynamic performance views such as V$SQL.
Another technique is to use calls to DBMS_APPLICATION_INFO.SET_MODULE, SET_ACTION, and SET_CLIENTINFO to poke the information into V$SESSION
http://www.morganslibrary.org/reference/dbms_applic_info.html