Fungsi di bawah ini menggantikan variabel bind dengan literal terbaru, menggunakan data dari GV$SQL_BIND_CAPTURE. Metadata pengikatan Oracle tidak selalu tersedia, sehingga fungsi di bawah ini mungkin tidak berfungsi dengan semua kueri.
Buat fungsi:
create or replace function get_sql_with_literals(p_sql_id varchar2) return clob authid current_user is
/*
Purpose: Generate a SQL statement with literals, based on values in GV$SQL_BIND_CAPTURE.
This can be helpful for queries with hundreds of bind variables (or cursor sharing),
and you don't want to spend minutes manually typing each variable.
*/
v_sql_text clob;
v_names sys.odcivarchar2list;
v_values sys.odcivarchar2list;
begin
--Get the SQL_ID and text.
--(Use dynamic SQL to simplify privileges. Your user must have access to GV$ views,
-- but you don't need to have them directly granted to your user, role access is fine.)
execute immediate
q'[
select sql_fulltext
from gv$sql
--There may be multiple rows, for clusters or child cursors.
--Can't use distinct with CLOB SQL_FULLTEXT, but since the values will be the same
--we can pick any one of the rows.
where sql_id = :p_sql_id
and rownum = 1
]'
into v_sql_text
using p_sql_id;
--Try to find the binds from GV$SQL_MONITOR. If the values exist, this is the most accurate source.
execute immediate
q'[
--Get the binds for the latest run.
select
case
when name like ':SYS_%' then ':"' || substr(name, 2) || '"'
else name
end name,
case
when dtystr like 'NUMBER%' then nvl(the_value, 'NULL')
when dtystr like 'VARCHAR2%' then '''' || the_value || ''''
when dtystr like 'DATE%' then 'to_date('''||the_value||''', ''MM/DD/YYYY HH24:MI:SS'')'
--From: https://ardentperf.com/2013/11/19/convert-rawhex-to-timestamp/
when dtystr like 'TIMESTAMP%' then
'to_timestamp('''||
to_char( to_number( substr( the_value, 1, 2 ), 'xx' ) - 100, 'fm00' ) ||
to_char( to_number( substr( the_value, 3, 2 ), 'xx' ) - 100, 'fm00' ) ||
to_char( to_number( substr( the_value, 5, 2 ), 'xx' ), 'fm00' ) ||
to_char( to_number( substr( the_value, 7, 2 ), 'xx' ), 'fm00' ) ||
to_char( to_number( substr( the_value, 9, 2 ), 'xx' )-1, 'fm00' ) ||
to_char( to_number( substr( the_value,11, 2 ), 'xx' )-1, 'fm00' ) ||
to_char( to_number( substr( the_value,13, 2 ), 'xx' )-1, 'fm00' ) ||
''', ''yyyymmddhh24miss'')'
else 'Unknown type: '||dtystr
end the_value
from
(
select xmltype.createXML(binds_xml) binds_xml
from
(
select binds_xml, last_refresh_time, max(last_refresh_time) over () max_last_refresh_time
from gv$sql_monitor
where sql_id = :p_sql_id
and binds_xml is not null
)
where last_refresh_time = max_last_refresh_time
and rownum = 1
) binds
cross join
xmltable('/binds/bind' passing binds.binds_xml
columns
name varchar2(128) path '@name',
dtystr varchar2(128) path '@dtystr',
the_value varchar2(4000) path '/'
)
--Match longest names first to avoid matching substrings.
--For example, we don't want ":b1" to be matched to ":b10".
order by length(name) desc, the_value
]'
bulk collect into v_names, v_values
using p_sql_id;
--Use gv$sql_bind_capture if there was nothing from SQL Monitor.
if v_names is null or v_names.count = 0 then
--Get bind data.
execute immediate
q'[
select
name,
--Convert to literals that can be plugged in.
case
when datatype_string like 'NUMBER%' then nvl(value_string, 'NULL')
when datatype_string like 'VARCHAR%' then '''' || value_string || ''''
when datatype_string like 'DATE%' then 'to_date('''||value_string||''', ''MM/DD/YYYY HH24:MI:SS'')'
--TODO: Add more types here
end value
from
(
select
datatype_string,
--If CURSOR_SHARING=FORCE, literals are replaced with bind variables and use a different format.
--The name is stored as :SYS_B_01, but the actual string will be :"SYS_B_01".
case
when name like ':SYS_%' then ':"' || substr(name, 2) || '"'
else name
end name,
position,
value_string,
--If there are multiple bind values captured, only get the latest set.
row_number() over (partition by name order by last_captured desc nulls last, address) last_when_1
from gv$sql_bind_capture
where sql_id = :p_sql_id
)
where last_when_1 = 1
--Match longest names first to avoid matching substrings.
--For example, we don't want ":b1" to be matched to ":b10".
order by length(name) desc, position
]'
bulk collect into v_names, v_values
using p_sql_id;
end if;
--Loop through the binds and replace them.
for i in 1 .. v_names.count loop
v_sql_text := replace(v_sql_text, v_names(i), v_values(i));
end loop;
--Return the SQL.
return v_sql_text;
end;
/
Jalankan fungsi:
Oracle hanya menangkap instance pertama dari variabel bind. Jalankan pernyataan ini sebelum menjalankan prosedur untuk menghapus data pengikatan yang ada. Hati-hati menjalankan pernyataan ini dalam produksi, ini dapat memperlambat sistem untuk sementara karena kehilangan paket yang di-cache.
alter system flush shared_pool;
Sekarang temukan SQL_ID. Ini bisa rumit, tergantung pada seberapa generik atau unik SQL itu.
select *
from gv$sql
where lower(sql_fulltext) like lower('%unique_string%')
and sql_fulltext not like '%quine%';
Terakhir, masukkan SQL ke dalam prosedur dan itu akan mengembalikan kode dengan literal. Sayangnya SQL kehilangan semua pemformatan. Tidak ada cara mudah untuk mengatasi ini. Jika ini masalah besar, Anda berpotensi membangun sesuatu menggunakan PL/Scope untuk mengganti variabel dalam prosedur, tetapi saya merasa itu akan sangat rumit. Semoga IDE Anda memiliki code beautifier.
select get_sql_with_literals(p_sql_id => '65xzbdjubzdqz') sql
from dual;
Contoh lengkap dengan prosedur:
Saya memodifikasi kode sumber Anda dan menambahkan pengidentifikasi unik sehingga kueri dapat ditemukan dengan mudah. Saya menggunakan petunjuk karena kueri yang diuraikan tidak menyertakan komentar biasa. Saya juga mengubah tipe data untuk menyertakan string dan tanggal untuk membuat contoh lebih realistis.
drop table test1 purge;
create table test1(col1 number, col2 varchar2(100), col3 date);
create or replace procedure test_procedure is
C_Constant constant date := date '2000-01-01';
v_output1 number;
v_output2 varchar2(100);
v_output3 date;
CURSOR cFunnyCursor (
v1 NUMBER,
v2 VARCHAR2
) IS
SELECT /*+ unique_string_1 */ * FROM TEST1
WHERE col1 = v1
AND col2 != v2
AND col3 = C_CONSTANT;
begin
open cFunnyCursor(3, 'asdf');
fetch cFunnyCursor into v_output1, v_output2, v_output3;
close cFunnyCursor;
end;
/
begin
test_procedure;
end;
/
select *
from gv$sql
where lower(sql_fulltext) like lower('%unique_string%')
and sql_fulltext not like '%quine%';
Hasil:
select get_sql_with_literals(p_sql_id => '65xzbdjubzdqz') sql
from dual;
SQL
---
SELECT /*+ unique_string_1 */ * FROM TEST1 WHERE COL1 = 3 AND COL2 != 'asdf' AND COL3 = to_date('01/01/2000 00:00:00', 'MM/DD/YYYY HH24:MI:SS')
