合 Mos脚本version_rpt3_25.sql用于排查高版本游标的原因
Tags： Oracle版本数高(High Version Count)version_rpt
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目录
简介
SQL 版本数过高 – 原因判断脚本 (Doc ID 1985045.1)
High SQL Version Counts - Script to determine reason(s) (Doc ID 438755.1)
可以直接使用sys用户运行：
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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); |
注意(s):
对于已经包含了patch 10187168的数据库版本, _CURSOR_OBSOLETE_THRESHOLD的默认值是100. 因为这个值被认为太低,所以已经被增长到了1024 对于包含了patch 10187168的数据库版本比如11.2.0.3, 我们应该用一个比较小的值作为LOADED_VERSIONS (而不是大于100) 当然如果你或者你的应用程序需要,也可以把它增加到300或更高 参照
See: Document 10187168.8 Bug 10187168 - Enhancement to obsolete parent cursors if VERSION_COUNT exceeds a threshold
注意：在11g数据库及以上版本，这个脚本只会对因为 BIND* 原因导致的废弃的游标做统计
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