—
— Purpose: Moves a SQL Profile from one statement to another.
–
Usage: This scripts prompts for four values.
—
— profile_name: the name of the profile to be attached to a new statement
—
— sql_id: the sql_id of the statement to attach the profile to
—
— category: the category to assign to the new profile
—
— force_macthing: a toggle to turn on or off the force_matching feature
—
— Description: This script is based on a script originally written by Randolf Giest.
— It’s purpose is to allow a statements text to be manipulated in whatever
— manner necessary (typically with hints) to get the desired plan. Then
— once a SQL Profile has been created on the new statement, it’s SQL Profile
— can be moved (or attached) to the orignal statement with unmodified text.
————————————————————————————————————————
accept profile_name –
prompt ‘Enter value for profile_name: ‘ –
default ‘X0X0X0X0’
accept sql_id –
prompt ‘Enter value for sql_id: ‘ –
default ‘X0X0X0X0’
accept category –
prompt ‘Enter value for category (DEFAULT): ‘ –
default ‘DEFAULT’
accept force_matching –
prompt ‘Enter value for force_matching (false): ‘ –
default ‘false’
—————————————————————————————-
—
— File name: profile_hints.sql
—
—————————————————————————————
—
set sqlblanklines on
declare
ar_profile_hints sys.sqlprof_attr;
cl_sql_text clob;
version varchar2(3);
l_category varchar2(30);
l_force_matching varchar2(3);
b_force_matching boolean;
begin
select regexp_replace(version,’..*’) into version from v$instance;
if version = ’10’ then
— dbms_output.put_line(‘version: ‘||version);
execute immediate — to avoid 942 error
‘select attr_val as outline_hints ‘||
‘from dba_sql_profiles p, sqlprof$attr h ‘||
‘where p.signature = h.signature ‘||
‘and name like (”&&profile_name”) ‘||
‘order by attr#’
bulk collect
into ar_profile_hints;
elsif version = ’11’ then
— dbms_output.put_line(‘version: ‘||version);
execute immediate — to avoid 942 error
‘select hint as outline_hints ‘||
‘from (select p.name, p.signature, p.category, row_number() ‘||
‘ over (partition by sd.signature, sd.category order by sd.signature) row_num, ‘||
‘ extractValue(value(t), ”/hint”) hint ‘||
‘from sqlobj$data sd, dba_sql_profiles p, ‘||
‘ table(xmlsequence(extract(xmltype(sd.comp_data), ‘||
‘ ”/outline_data/hint”))) t ‘||
‘where sd.obj_type = 1 ‘||
‘and p.signature = sd.signature ‘||
‘and p.name like (”&&profile_name”)) ‘||
‘order by row_num’
bulk collect
into ar_profile_hints;
end if;
/*
declare
ar_profile_hints sys.sqlprof_attr;
cl_sql_text clob;
begin
select attr_val as outline_hints
bulk collect
into
ar_profile_hints
from dba_sql_profiles p, sqlprof$attr h
where p.signature = h.signature
and name like (‘&&profile_name’)
order by attr#;
*/
select
sql_fulltext
into
cl_sql_text
from
v$sqlarea
where
sql_id = ‘&&sql_id’;
dbms_sqltune.import_sql_profile(
sql_text => cl_sql_text
, profile => ar_profile_hints
, category => ‘&&category’
, name => ‘PROFILE_’||’&&sql_id’||’_moved’
— use force_match => true
— to use CURSOR_SHARING=SIMILAR
— behaviour, i.e. match even with
— differing literals
, force_match => &&force_matching
);
end;
/
undef profile_name
undef sql_id
undef category
undef force_matching
