Previously Compiled P/L SQL Now Freezes in SQL Developer - sql

Question

I am at a complete loss as to where my issue is. Earlier on I wrote a procedure that compiled fine, however now I notice that if I take the exact code (even copy/paste from the procedure itself), and try to run it again, SQL Developer essentially freezes and it never compiles.
The SQL itself is certainly not the cleanest, and I am aware that I've made it a little more complex than a better programmer would, however if it compiled earlier it should compile again, no? Below is the P/L SQL in case that may help...
create or replace PROCEDURE insert_comments AS
v_blob BLOB; v_record number;
BEGIN
SELECT blob_content INTO v_blob from xlsx_files;
for x in
(select id into v_record from
(SELECT to_number(id) id, name FROM
(WITH xlsx AS
(SELECT
ROW_NR,
COL_NR,
CASE CELL_TYPE
WHEN 'S'
THEN STRING_VAL
WHEN 'N'
THEN TO_CLOB(NUMBER_VAL)
WHEN 'D'
THEN TO_CLOB(TO_CHAR(DATE_VAL, 'DD-MON-YYYY'))
ELSE
TO_CLOB(FORMULA)
END CELL_VAL
FROM
(SELECT * FROM
TABLE(as_read_xlsx_clob.read(v_blob ))
--as_read_xlsx_clob is a function from the As_read_XLSX_CLOB package
)
)
/*The below statement works as a roundabout way of pivoting
the table. Since the data in the file may contain CLOBs, you
can't use the PIVOT function since CLOBs do not support
aggregation. I have commented out the original SQL that used
PIVOT*/
SELECT id_table.id, name_table.name FROM
(SELECT row_nr, cell_val id FROM
(SELECT * FROM xlsx WHERE row_nr > 1) id_table
where id_table.col_nr=1
) id_table
inner join
(SELECT row_nr, cell_val name FROM
(SELECT *
FROM xlsx
--PIVOT (MAX(TO_CHAR(CELL_VAL))
FOR COL_NR IN (1 AS ROW_WID,2 AS NAME)
) ad
WHERE row_nr >1
) name_table
where name_table.col_nr = 2
) name_table
ON id_table.row_nr = name_table.row_nr
)
)
)
loop
v_record := x.id;
INSERT INTO comment_test(id, name)
(SELECT to_number(id) id, name
FROM
(WITH xlsx AS
(SELECT
ROW_NR,
COL_NR,
CASE CELL_TYPE
WHEN 'S'
THEN STRING_VAL
WHEN 'N'
THEN TO_CLOB(NUMBER_VAL)
WHEN 'D'
THEN TO_CLOB(TO_CHAR(DATE_VAL, 'DD-MON-YYYY'))
ELSE TO_CLOB(FORMULA)
END CELL_VAL
FROM
(SELECT * FROM
TABLE(as_read_xlsx_clob.read(v_blob ))
--as_read_xlsx_clob is a function from the As_read_XLSX_CLOB package
)
)
/*The below statement works as a roundabout way of
pivoting the table. Since the data in the file may
contain CLOBs, you can't use the PIVOT function since
CLOBs do not support aggregation. I have commented out
the original SQL that used PIVOT*/
SELECT id_table.id, name_table.name FROM
(SELECT row_nr, cell_val id FROM
(SELECT * FROM xlsx WHERE row_nr > 1) id_table
where id_table.col_nr=1
) id_table
inner join
(SELECT row_nr, cell_val name FROM
(SELECT *
xlsx
--PIVOT (MAX(TO_CHAR(CELL_VAL))
FOR COL_NR IN (1 AS ROW_WID,2 AS NAME)
) ad
WHERE row_nr >1
) name_table
where name_table.col_nr = 2
) name_table
ON id_table.row_nr = name_table.row_nr)
where to_number(id) = v_record
);
end loop;
delete from xlsx_files;
END;

Answer 1

Per William Robertson's comments, the issue was there was another session which was using the procedure. This session was killed and I was able to recompile.