ORACLE High SQL Version Counts - Script

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create or replace view SQL_SHARED_CURSOR
as select * from sys.v$sql_shared_cursor;


create or replace view h$pseudo_cursor as
select Pseudo_cursor, sql_id,obj_id hex_obj_id
     ,obj# object_id, u.name owner, o.name object_name
     ,address,hash_value,SHARABLE_MEM,parse_calls,VERSION_COUNT,is_obsolete
from (select distinct
             KGLNAOBJ Pseudo_cursor,kglobt03 sql_id
        ,KGLHDPAR address,KGLNAHSH hash_value
        ,KGLOBHS0+KGLOBHS1+KGLOBHS2+KGLOBHS3+KGLOBHS4+KGLOBHS5+KGLOBHS6 SHARABLE_MEM
        ,KGLOBT12 parse_calls
        ,KGLHDEXC executions
        ,KGLOBCCC VERSION_COUNT
        ,decode(kglobt33, 1, 'Y', 'N') is_obsolete
        ,substr(KGLNAOBJ
               ,instr(KGLNAOBJ,'_',1,3)+1
               ,instr(KGLNAOBJ,'_',1,4)-instr(KGLNAOBJ,'_',1,3)-1) obj_id
       ,(case when
         replace(translate(substr(upper(KGLNAOBJ)
                                 ,instr(KGLNAOBJ,'_',1,3)+1
                                 ,instr(KGLNAOBJ,'_',1,4)
                                  -instr(KGLNAOBJ,'_',1,3)-1)
                          ,'0123456789ABCDEF','................')
                ,'.') is null then 'Y' else 'N' end) is_safe_to_compare
            from x$kglob) k
   , obj$ o, user$ u
where obj#=decode(is_safe_to_compare,'Y',to_number(obj_id,'xxxxxxxxxx'),0)
   and o.owner#=u.user#;

Create or replace view H$PARAMETER
as
select a.ksppinm  NAME,
     a.ksppdesc DESCRIPTION,
     b.ksppstvl SESSION_VALUE,
     c.ksppstvl SYSTEM_VALUE
from x$ksppi a, x$ksppcv b, x$ksppsv c
where a.indx = b.indx and a.indx = c.indx;


create or replace function debug_version_rpt return DBMS_DEBUG_VC2COLL PIPELINED is
v_status number;
v_info varchar2(32767);
begin
loop
  v_status := dbms_pipe.receive_message('version_rpt',0);
  if v_status = 0 then
   dbms_pipe.unpack_message(v_info);
   pipe row (v_info);
  else
   return;
  end if;
end loop ;
end;
/

create or replace function version_rpt(p_sql_id varchar2 default null,p_hash number default null,p_debug char default 'N') return DBMS_DEBUG_VC2COLL PIPELINED is
type vc_arr is table of varchar2(32767) index by binary_integer;
type num_arr is table of number index by binary_integer;

v_version varchar2(100);
v_instance varchar2(100);
v_colname vc_arr;
v_Ycnt num_arr;
v_count number:=-1;
v_no number;
v_all_no number:=-1;

v_query varchar2(4000);
v_sql_where varchar2(4000):='';
v_sql_where2 varchar2(4000):='';
v_sql_id varchar2(15):=p_sql_id;
v_addr varchar2(100);
V_coladdr varchar2(100);
v_hash number:=p_hash;
v_mem number;
v_parses number;
v_execs number;
v_value varchar2(100);

theCursor number;
columnValue char(1);
status number;

v_driver varchar2(1000);
TYPE cursor_ref IS REF CURSOR;
vc cursor_ref;

v_bind_dumped boolean:=false;
v_auth_dumped boolean:=false;

           v_phv num_arr;
          v_phvc num_arr;

procedure debugme(p_info varchar2) is
v_st number;
begin
if p_debug='Y' then
  dbms_pipe.pack_message(p_info);
  v_st := dbms_pipe.send_message('version_rpt',5);
  if v_st=1 then dbms_pipe.purge('version_rpt'); end if;
end if;
end;

BEGIN
if p_debug='Y' then
  status:=DBMS_PIPE.CREATE_PIPE ( pipename=>'version_rpt',maxpipesize=>1024*1024);
  if status<>0 then pipe row ('Cannot debug'); return; end if;
end if;
debugme('instance version');

select version,'Host: '||HOST_NAME||' Instance '||INSTANCE_NUMBER||' : '||INSTANCE_NAME
  into v_version , v_instance from v$instance;

debugme('build v$sqlarea query for '||v_sql_id||' '||v_hash);

/*
    This aggregate query is in the cases where
    1) So many versions of the same SQL that many parents have been obsoleted.
    2) there are more than 1 SQL with the same hash value or sql_id (very rare)
*/

v_query:='select '|| case when v_version  like '9%' then '(NULL)' else '(sql_id)' end ||'  sql_id,'
        ||  'max(sql_text) query,'
        ||  'max(hash_value) hash,'
        ||  'max(rawtohex(ADDRESS)) addr,'
        ||  'sum(SHARABLE_MEM) SHARABLE_MEM,'
        ||  'sum(PARSE_CALLS) PARSE_CALLS,'
        ||  'sum(EXECUTIONS) EXECUTIONS'
        ||  ' from v$sqlarea where'
        || case when v_sql_id is not null then ' sql_id=:v_sql_id' else ' hash_value=:v_hash' end
        || ' group by '|| (case when v_version like '9%' then 'NULL' else 'sql_id' end);

debugme(v_query);
if v_sql_id is not null then
  open vc for v_query using v_sql_id;
else
  open vc for v_query using v_hash;
end if;

debugme('Successful open cursor');

PIPE ROW('Note:438755.1 Version Count Report Version 3.2.5 -- Today''s Date '||to_char(sysdate,'dd-mon-yy hh24:mi')) ;
PIPE ROW('RDBMS Version :'||v_version||' '||v_instance);


    debugme('fetch '||v_sql_id||' '||v_hash);
    fetch vc into v_sql_id, v_query,v_hash,v_addr,v_mem,v_parses,v_execs;
    if vc%notfound then
    /* This execption could mean 2 things
       1) The user gave a wrong SQLID
       2) The SQLID belongs to a pseudo cursor.

       if 2) then the info will not be in v$sqlarea so will try h$pseudo_cursor.
       I do not query h$pseudo_cursor from the start to avoid as much as possible to access x$ views directly
       due to their mutex and latch restrictions and to take advantage of any optimizations done in v$sqlarea.
    */   
     debugme('not found - alternate');
     v_query:= replace(v_query,'v$sqlarea','H$PSEUDO_CURSOR');
     v_query:= replace(v_query,'sql_text','Pseudo_cursor||''(PseudoCursor of ''||owner||''.''||object_name||'')''');
     debugme(v_query);

     close vc;
     if v_sql_id is not null then
      open vc for v_query using v_sql_id;
     else
      open vc for v_query using v_hash;
     end if;
     fetch vc into v_sql_id, v_query,v_hash,v_addr,v_mem,v_parses,v_execs;
     if vc%notfound then
      return; /* Sorry, really is not in the library cache. */
     end if;
    end if;
    close vc;


    debugme('Header');
     v_colname.delete;
     v_Ycnt.delete;
     v_count:=-1;
     v_no:=0;
     v_all_no:=-1;

         PIPE ROW('==================================================================');
         PIPE ROW('Addr: '||v_addr||'  Hash_Value: '||v_hash||'  SQL_ID '||v_sql_id);
         PIPE ROW('Sharable_Mem: '||v_mem||' bytes   Parses: '||v_parses||'   Execs:'||v_execs);
         PIPE ROW('Stmt: ');

         for i in 0 .. trunc(length(v_query)/64)+1 loop
          debugme('Print query line '||i);
          PIPE ROW(i||' '||substr(v_query,1+i*64,64));
         end loop;

          debugme('Fetch SQL_SHARED_CURSOR columns');

          SELECT COLUMN_NAME,0 bulk collect into v_colname,v_Ycnt
           from cols
          where table_name='SQL_SHARED_CURSOR'
            and CHAR_LENGTH=1
         order by column_id;

         v_query:='';
         debugme('Build Select List');
         for i in 1 .. v_colname.count loop
          v_query:= v_query ||','|| v_colname(i);
         end loop;

         debugme('Build Where');

          if v_version like '9%' then
           v_sql_where:=' WHERE ADDRESS=HEXTORAW('''||V_ADDR||''')';
           v_sql_where2:=' WHERE KGLHDPAR=HEXTORAW('''||V_ADDR||''')';
          elsif v_sql_id is not null then
           v_sql_where:=' WHERE SQL_ID='''||v_sql_id||'''';
           v_sql_where2:=v_sql_where;
          else
           v_sql_where:=' WHERE ADDRESS=HEXTORAW('''||V_ADDR||''')';
           v_sql_where2:=v_sql_where;
          end if;

         debugme('Build Query');
         v_query:= 'SELECT '||substr(v_query,2) || ' FROM SQL_SHARED_CURSOR ';

         v_query:=v_query||v_sql_where2;

         debugme(substr(v_sql_where2,-80));

         debugme('Open Query');
         begin
          theCursor := dbms_sql.open_cursor;
          sys.dbms_sys_sql.parse_as_user(C=>theCursor,STATEMENT=> v_Query, LANGUAGE_FLAG=>dbms_sql.native ,USERID=>0);

          for i in 1 .. v_colname.count loop
           dbms_sql.define_column( theCursor, i, columnValue, 8000 );
          end loop;

          status := dbms_sql.execute(theCursor);

          debugme('Initiate Fetch');
          while (dbms_sql.fetch_rows(theCursor) >0) loop
           v_no:=0;
           v_count:=v_count+1;
           debugme('Fetch row '||v_count);
           for i in 1..v_colname.count loop
            dbms_sql.column_value(theCursor, i, columnValue);
--            debugme('Decode row '||v_count||' column '||i);
            if columnValue='Y' then
             v_Ycnt(i):=v_Ycnt(i)+1;
            else
             v_no:=v_no+1;
            end if;
           end loop;

           if v_no=v_colname.count then
            v_all_no:=v_all_no+1;
           end if;
          end loop;
          dbms_sql.close_cursor(theCursor);
         end;

         debugme('Version summary');
         PIPE ROW('');
         PIPE ROW('Versions Summary');
         PIPE ROW('----------------');
         for i in 1 .. v_colname.count loop
          if v_Ycnt(i)>0 then
           PIPE ROW(v_colname(i)||' :'||v_Ycnt(i));
          end if;
         end loop;
         If v_all_no>1 then
          PIPE ROW('Versions with ALL Columns as "N" :'||v_all_no);
         end if;
         PIPE ROW(' ');
         PIPE ROW('Total Versions:'||v_count);

         PIPE ROW(' ');
         PIPE ROW('~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ ');
         V_value:=NULL;
         v_query:='select max(SYSTEM_VALUE) into :v_value from h$parameter where name=''cursor_sharing'' ';
         execute immediate v_query into v_value;
         if v_value is not null then
          PIPE ROW('cursor_sharing = '||v_value);
         end if;
                 
          V_NO:=NULL;
          v_query:='select max(SYSTEM_VALUE) into :v_no from h$parameter where name=''_cursor_obsolete_threshold'' ';
          execute immediate v_query into v_no;
          if v_no is not null then
           PIPE ROW('_cursor_obsolete_threshold = '||v_no||' (See Note:10187168.8)');
          end if;

         PIPE ROW('~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ ');

         PIPE ROW(' ');

         v_phv.delete;
         v_phvc.delete;

         debugme('PHV');
         v_query:='select plan_hash_value,count(*) from v$sql '||v_sql_where||' group by plan_hash_value';

         execute immediate v_query bulk collect into  v_phv,v_phvc;

         PIPE ROW('Plan Hash Value Summary');
         PIPE ROW('-----------------------');
         PIPE ROW('Plan Hash Value Count');
         PIPE ROW('=============== =====');
         for i in 1 .. v_phv.count loop
          PIPE ROW(to_char(v_phv(i),'99999999999999')||' '||to_char(v_phvc(i)));
         end loop;
         PIPE ROW(' ');


  for i in 1 .. v_colname.count loop
   debugme('Diag for '||v_colname(i)||' Ycnt:'||v_Ycnt(i));
   if v_Ycnt(i)>0 then

    PIPE ROW('~~~~~~~~~~~~~~'||rpad('~',length(v_colname(i)),'~'));
    PIPE ROW('Details for '||v_colname(i)||' :');
    PIPE ROW('');
    if ( v_colname(i) like '%BIND%')
            or  (v_version like '11.1%' and v_colname(i)='ROW_LEVEL_SEC_MISMATCH') then
     if v_bind_dumped=true then -- Dump only once
      PIPE ROW('Details shown already.');
     else
      v_bind_dumped:=true;
      if v_version like '9%' then
       PIPE ROW('No details for '||v_version);
      else
       PIPE ROW('Consolidated details for BIND* columns:');
       PIPE ROW('BIND_MISMATCH,USER_BIND_PEEK_MISMATCH,BIND_UACS_DIFF,BIND_LENGTH_UPGRADEABLE,etc and');
       PIPE ROW('BIND_EQUIV_FAILURE (Mislabled as ROW_LEVEL_SEC_MISMATCH BY bug 6964441 in 11gR1)');
       PIPE ROW('');
       declare
        v_position num_arr;
        v_maxlen num_arr;
        v_minlen num_arr;
        v_dtype num_arr;
        v_prec num_arr;
        v_scale num_arr;
        v_n num_arr;
        v_bg char(3);
        v_bgflag char(1):='N';

       begin
        v_query:='select position,min(max_length),max(max_length),datatype,precision,scale,count(*) n'
               ||' from v$sql_bind_capture where sql_id=:v_sql_id'
               ||' group by sql_id,position,datatype,precision,scale'
               ||' order by sql_id,position,datatype,precision,scale';

        EXECUTE IMMEDIATE v_query
        bulk collect into v_position, v_minlen, v_maxlen , v_dtype ,v_prec ,v_scale , v_n
        using v_sql_id;

        PIPE ROW('from v$sql_bind_capture');
        PIPE ROW('COUNT(*) POSITION MIN(MAX_LENGTH) MAX(MAX_LENGTH) DATATYPE BIND GRADUATION (PRECISION,SCALE)');
        PIPE ROW('======== ======== =============== =============== ======== =============== =================');
        for c in 1 .. v_position.count loop
         v_bg:=(case when v_maxlen(c)>v_minlen(c) then 'Yes' else 'No' end);
         v_bgflag:=(case when v_bg='Yes' and v_n(c)>99 then 'Y' end);
         PIPE ROW( to_char(v_n(c),'9999999')||' '||to_char(v_position(c),'9999999')||' '|| to_char(v_minlen(c),'99999999999999')
                  ||' '|| to_char(v_maxlen(c),'99999999999999')
                  ||' '|| to_char(v_dtype(c),'9999999')
                  ||'     '||v_bg
                  ||'          ('|| v_prec(c)||','||v_scale(c)||')'                 
                 );
        end loop;

        if ( v_bgflag='Y' ) then
         PIPE ROW ('The above table shows binds with 100+ versions in the same position with different MAX_LENGTHs.');
         PIPE ROW ('See "Add event to improve cursor sharability on BIND_LENGTH_UPGRADEABLE" ');
        end if;

        if v_version not like '10%' and v_version not like '9%' then
         v_query:='select sum(decode(IS_OBSOLETE,''Y'', 1, 0)),sum(decode(IS_BIND_SENSITIVE ,''Y'',1, 0))'
                ||',sum(decode(IS_BIND_AWARE,''Y'',1,0)),sum(decode(IS_SHAREABLE,''Y'',1,0))'
                ||' from v$sql where sql_id = :v_sql_id';

         EXECUTE IMMEDIATE v_query
         bulk collect into v_position, v_minlen, v_maxlen , v_dtype
         using v_sql_id;

         PIPE ROW('');
         PIPE ROW('SUM(DECODE(column,Y, 1, 0) FROM V$SQL');
         PIPE ROW('IS_OBSOLETE IS_BIND_SENSITIVE IS_BIND_AWARE IS_SHAREABLE');
         PIPE ROW('=========== ================= ============= ============');
         for c in 1 .. v_position.count loop
          PIPE ROW(to_char(v_position(c),'9999999999')||' '|| to_char(v_minlen(c),'9999999999999999')
                  ||' '|| to_char(v_maxlen(c),'999999999999')
                  ||' '|| to_char(v_dtype(c),'99999999999'));
         end loop;
        end if;
       end;
      end if;
     end if;
    elsif v_colname(i) ='OPTIMIZER_MODE_MISMATCH' then
      for c in (select OPTIMIZER_MODE,count(*) n from v$sql where hash_value=v_hash group by OPTIMIZER_MODE) loop
       PIPE ROW(c.n||' versions with '||c.OPTIMIZER_MODE);
      end loop;
    elsif v_colname(i) ='OPTIMIZER_MISMATCH' then
      if v_version like '9%' then
       PIPE ROW('No details available for '||v_version);
      else
       declare
        v_param vc_arr;
        v_value vc_arr;
        v_n num_arr;
       begin
        v_query:='select o.NAME,o.VALUE ,count(*) n '
                   ||'from V$SQL_OPTIMIZER_ENV o,sql_shared_cursor s '
                   ||'where ISDEFAULT=''NO'' '
                   ||'  and OPTIMIZER_MISMATCH=''Y'' '
                   ||'  and s.sql_id=:v_sql_id '
                   ||'  and o.sql_id=s.sql_id '
                   ||'  and o.CHILD_ADDRESS=s.CHILD_ADDRESS '
                   ||' group by o.NAME,o.VALUE ';
        EXECUTE IMMEDIATE v_query
        bulk collect into v_param,v_value,v_n using v_sql_id ;

        for c in 1 .. v_n.count  loop
         PIPE ROW(v_n(c)||' versions with '||v_param(c)||' = '||v_value(c));
        end loop;
       end;
      end if;
    elsif v_colname(i) ='AUTH_CHECK_MISMATCH' then
       declare
        v_pusr num_arr;
        v_pschid num_arr;
        v_pschname vc_arr;
        v_n num_arr;
       begin

        if v_version like '9%' then
         v_query:='select  PARSING_USER_ID, PARSING_SCHEMA_ID, ''n/a'' ,count(*) n from  v$sql '
                 ||v_sql_where
                 ||' group by PARSING_USER_ID, PARSING_SCHEMA_ID,''n/a''';
        else
         v_query:='select  PARSING_USER_ID, PARSING_SCHEMA_ID, PARSING_SCHEMA_NAME ,count(*) n from  v$sql '
                 ||v_sql_where
                 ||' group by PARSING_USER_ID, PARSING_SCHEMA_ID, PARSING_SCHEMA_NAME';
        end if;
        EXECUTE IMMEDIATE v_query
        bulk collect into v_pusr,v_pschid,v_pschname,v_n;

        PIPE ROW('  # of Ver PARSING_USER_ID PARSING_SCHEMA_ID PARSING_SCHEMA_NAME');
        PIPE ROW('========== =============== ================= ===================');
        for c in 1 .. v_n.count loop
         PIPE ROW(to_char(v_n(c),'999999999')|| TO_CHAR(v_pusr(c),'9999999999999999')|| to_char(v_pschid(c),'99999999999999999')||' '||v_pschname(c));
        end loop;
       end;
    elsif v_colname(i) = 'TRANSLATION_MISMATCH' then
       declare
        v_objn  num_arr;
        v_objow vc_arr;
        v_objnm vc_arr;
       begin
        v_query:='select distinct p.OBJECT#,p.OBJECT_OWNER,p.OBJECT_NAME'
           ||' from (select OBJECT_NAME ,count(distinct object#) n from v$sql_plan '
                  ||v_sql_where
                  ||' and object_name is not null group by OBJECT_NAME ) d'
           ||' ,v$sql_plan p where d.object_name=p.object_name and d.n>1';

        EXECUTE IMMEDIATE v_query
         bulk collect into v_objn,v_objow,v_objnm;

        If v_objn.count>0 then
         PIPE ROW('Summary of objects probably causing TRANSLATION_MISMATCH');
         PIPE ROW(' ');
         PIPE ROW('     Object# Owner.Object_Name');
         PIPE ROW('============ =================');
         for c in 1 .. v_objn.count loop
          PIPE ROW(to_char(v_objn(c),'99999999999')||' '||v_objow(c)||'.'||v_objnm(c));
         end loop;
        else
         PIPE ROW('No objects in the plans with same name and different owner were found.');
        end if;
       end;
    else
     PIPE ROW('No details available');
    end if;
   end if;
end loop;
debugme('cursortrace');
IF v_version not like '9%' then
  PIPE ROW('####');
  PIPE ROW('To further debug Ask Oracle Support for the appropiate level LLL.');
  if v_version in ('10.2.0.1.0','10.2.0.2.0','10.2.0.3.0') THEN
   PIPE ROW('and read note:457225.1 Cannot turn off Trace after setting CURSORTRACE EVENT');
  end if;
  PIPE ROW('alter session set events ');
  PIPE ROW(' ''immediate trace name cursortrace address '||v_hash||', level LLL'';');
  PIPE ROW('To turn it off do use address 1, level 2147483648');
end if;
PIPE ROW('================================================================');
debugme('End of version_rpt');
return;
exception
  when others then
   PIPE ROW('Error :'||sqlerrm);
   PIPE ROW('for Addr: '||v_addr||'  Hash_Value: '||v_hash||'  SQL_ID '||v_sql_id);
   for i in 0 .. trunc(length(v_query)/64) loop
    PIPE ROW(i||' '||substr(v_query,1+i*64,64));
   end loop;
return;
end;
/





rem select b.* from v$sqlarea a ,table(version_rpt(a.sql_id,null,'Y')) b where loaded_versions >=100;

rem select * from table(debug_version_rpt);

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