SQL>select owner,object_name,object_type from dba_objects where object_name='V$SORT_USAGE'; OWNER OBJECT_NAME OBJECT_TYPE ---------- -------------------- ------------------- PUBLIC V$SORT_USAGE SYNONYM SQL>select * from dba_synonyms where synonym_name='V$SORT_USAGE'; OWNER SYNONYM_NAME TABLE_OWNE TABLE_NAME DB_LINK ---------- --------------- ---------- ------------------------------ ---------- PUBLIC V$SORT_USAGE SYS V_$SORT_USAGE SQL>select owner,object_name,object_type from dba_objects where object_name='V_$SORT_USAGE'; OWNER OBJECT_NAME OBJECT_TYPE ---------- -------------------- ------------------- SYS V_$SORT_USAGE VIEW SQL>select dbms_metadata.get_ddl('VIEW','V_$SORT_USAGE','SYS') ddl_text from dual DDL_TEXT -------------------------------------------------------------------------------- CREATE OR REPLACE FORCE VIEW "SYS"."V_$SORT_USAGE" ("USERNAME", "USER", "SESSI ON_ADDR", "SESSION_NUM", "SQLADDR", "SQLHASH", "SQL_ID", "TABLESPACE", "CONTENTS ", "SEGTYPE", "SEGFILE#", "SEGBLK#", "EXTENTS", "BLOCKS", "SEGRFNO#") AS select "USERNAME","USER","SESSION_ADDR","SESSION_NUM","SQLADDR","SQLHASH","SQL _ID","TABLESPACE","CONTENTS","SEGTYPE","SEGFILE#","SEGBLK#","EXTENTS","BLOCKS"," SEGRFNO#" from v$sort_usage; SQL>select * from v$fixed_view_definition where view_name ='V$SORT_USAGE'; VIEW_NAME VIEW_DEFINITION --------------- --------------------------------------------- V$SORT_USAGE select USERNAME , "USER" , SESSION_ADDR , SE SSION_NUM , SQLADDR , SQLHASH, SQL_ID, TABLES PACE , CONTENTS , SEGTYPE , SEGFILE# , SEGBLK # ,EXTENTS , BLOCKS , SEGRFNO# from GV$SORT_U SAGE where inst_id = USERENV('Instance') SQL>select * from v$fixed_view_definition where view_name ='GV$SORT_USAGE'; VIEW_NAME VIEW_DEFINITION --------------- --------------------------------------------- GV$SORT_USAGE select x$ktsso.inst_id, username, username, k tssoses, ktssosno, prev_sql_addr, prev_hash_v alue, prev_sql_id, ktssotsn, decode(ktssocnt, 0, 'PERMANENT', 1, 'TEMPORARY'), decode(ktss osegt, 1, 'SORT', 2, 'HASH', 3, 'DATA', 4, 'I NDEX', 5, 'LOB_DATA', 6, 'LOB_INDEX' , 'UNDEF INED'), ktssofno, ktssobno, ktssoexts, ktssob lks, ktssorfno from x$ktsso, v$session where ktssoses = v$session.saddr and ktssosno = v$s ession.serial# SQL>select owner,object_name,object_type from dba_objects where object_name='V$SESSION'; OWNER OBJECT_NAME OBJECT_TYPE ---------- -------------------- ------------------- PUBLIC V$SESSION SYNONYM SQL>select * from dba_synonyms where synonym_name='V$SESSION'; OWNER SYNONYM_NAME TABLE_OWNE TABLE_NAME DB_LINK ---------- --------------- ---------- ------------------------------ ---------- PUBLIC V$SESSION SYS V_$SESSION SQL>select owner,object_name,object_type from dba_objects where object_name='V_$SESSION'; OWNER OBJECT_NAME OBJECT_TYPE ---------- -------------------- ------------------- SYS V_$SESSION VIEW DDL_TEXT -------------------------------------------------------------------------------- CREATE OR REPLACE FORCE VIEW "SYS"."V_$SESSION" ("SADDR", "SID", "SERIAL#", "A UDSID", "PADDR", "USER#", "USERNAME", "COMMAND", "OWNERID", "TADDR", "LOCKWAIT", "STATUS", "SERVER", "SCHEMA#", "SCHEMANAME", "OSUSER", "PROCESS", "MACHINE", "P ORT", "TERMINAL", "PROGRAM", "TYPE", "SQL_ADDRESS", "SQL_HASH_VALUE", "SQL_ID", "SQL_CHILD_NUMBER", "SQL_EXEC_START", "SQL_EXEC_ID", "PREV_SQL_ADDR", "PREV_HASH _VALUE", "PREV_SQL_ID", "PREV_CHILD_NUMBER", "PREV_EXEC_START", "PREV_EXEC_ID", "PLSQL_ENTRY_OBJECT_ID", "PLSQL_ENTRY_SUBPROGRAM_ID", "PLSQL_OBJECT_ID", "PLSQL_ SUBPROGRAM_ID", "MODULE", "MODULE_HASH", "ACTION", "ACTION_HASH", "CLIENT_INFO", "FIXED_TABLE_SEQUENCE", "ROW_WAIT_OBJ#", "ROW_WAIT_FILE#", "ROW_WAIT_BLOCK#", " ROW_WAIT_ROW#", "TOP_LEVEL_CALL#", "LOGON_TIME", "LAST_CALL_ET", "PDML_ENABLED", "FAILOVER_TYPE", "FAILOVER_METHOD", "FAILED_OVER", "RESOURCE_CONSUMER_GROUP", " PDML_STATUS", "PDDL_STATUS", "PQ_STATUS", "CURRENT_QUEUE_DURATION", "CLIENT_IDEN TIFIER", "BLOCKING_SESSION_STATUS", "BLOCKING_INSTANCE", "BLOCKING_SESSION", "FI NAL_BLOCKING_SESSION_STATUS", "FINAL_BLOCKING_INSTANCE", "FINAL_BLOCKING_SESSION ", "SEQ#", "EVENT#", "EVENT", "P1TEXT", "P1", "P1RAW", "P2TEXT", "P2", "P2RAW", "P3TEXT", "P3", "P3RAW", "WAIT_CLASS_ID", "WAIT_CLASS#", "WAIT_CLASS", "WAIT_TIM E", "SECONDS_IN_WAIT", "STATE", "WAIT_TIME_MICRO", "TIME_REMAINING_MICRO", "TIME _SINCE_LAST_WAIT_MICRO", "SERVICE_NAME", "SQL_TRACE", "SQL_TRACE_WAITS", "SQL_TR ACE_BINDS", "SQL_TRACE_PLAN_STATS", "SESSION_EDITION_ID", "CREATOR_ADDR", "CREAT OR_SERIAL#", "ECID") AS select "SADDR","SID","SERIAL#","AUDSID","PADDR","USER #","USERNAME","COMMAND","OWNERID","TADDR","LOCKWAIT","STATUS","SERVER","SCHEMA#" ,"SCHEMANAME","OSUSER","PROCESS","MACHINE","PORT","TERMINAL","PROGRAM","TYPE","S QL_ADDRESS","SQL_HASH_VALUE","SQL_ID","SQL_CHILD_NUMBER","SQL_EXEC_START","SQL_E XEC_ID","PREV_SQL_ADDR","PREV_HASH_VALUE","PREV_SQL_ID","PREV_CHILD_NUMBER","PRE V_EXEC_START","PREV_EXEC_ID","PLSQL_ENTRY_OBJECT_ID","PLSQL_ENTRY_SUBPROGRAM_ID" ,"PLSQL_OBJECT_ID","PLSQL_SUBPROGRAM_ID","MODULE","MODULE_HASH","ACTION","ACTION _HASH","CLIENT_INFO","FIXED_TABLE_SEQUENCE","ROW_WAIT_OBJ#","ROW_WAIT_FILE#","RO W_WAIT_BLOCK#","ROW_WAIT_ROW#","TOP_LEVEL_CALL#","LOGON_TIME","LAST_CALL_ET","PD ML_ENABLED","FAILOVER_TYPE","FAILOVER_METHOD","FAILED_OVER","RESOURCE_CONSUMER_G ROUP","PDML_STATUS","PDDL_STATUS","PQ_STATUS","CURRENT_QUEUE_DURATION","CLIENT_I DENTIFIER","BLOCKING_SESSION_STATUS","BLOCKING_INSTANCE","BLOCKING_SESSION","FIN AL_BLOCKING_SESSION_STATUS","FINAL_BLOCKING_INSTANCE","FINAL_BLOCKING_SESSION"," SEQ#","EVENT#","EVENT","P1TEXT","P1","P1RAW","P2TEXT","P2","P2RAW","P3TEXT","P3" ,"P3RAW","WAIT_CLASS_ID","WAIT_CLASS#","WAIT_CLASS","WAIT_TIME","SECONDS_IN_WAIT ","STATE","WAIT_TIME_MICRO","TIME_REMAINING_MICRO","TIME_SINCE_LAST_WAIT_MICRO", "SERVICE_NAME","SQL_TRACE","SQL_TRACE_WAITS","SQL_TRACE_BINDS","SQL_TRACE_PLAN_S TATS","SESSION_EDITION_ID","CREATOR_ADDR","CREATOR_SERIAL#","ECID" from v$sessio n SQL>select * from v$fixed_view_definition where view_name ='V$SESSION'; SQL> select * from v$fixed_view_definition where view_name ='V$SESSION'; VIEW_NAME VIEW_DEFINITION --------------- --------------------------------------------- V$SESSION select SADDR , SID , SERIAL# , AUDSID , PADD R , USER# , USERNAME , COMMAND , OWNERID, TAD DR , LOCKWAIT , STATUS , SERVER , SCHEMA# , S CHEMANAME ,OSUSER , PROCESS , MACHINE , PORT , TERMINAL , PROGRAM , TYPE , SQL_ADDRESS , SQL_HASH_VALUE, SQL_ID, SQL_CHILD_NUMBER , SQ L_EXEC_START, SQL_EXEC_ID, PREV_SQL_ADDR , PR EV_HASH_VALUE , PREV_SQL_ID, PREV_CHILD_NUMBE R , PREV_EXEC_START , PREV_EXEC_ID , PLSQL_EN TRY_OBJECT_ID, PLSQL_ENTRY_SUBPROGRAM_ID, PLS QL_OBJECT_ID, PLSQL_SUBPROGRAM_ID, MODULE , M ODULE_HASH , ACTION , ACTION_HASH , CLIENT_IN FO , FIXED_TABLE_SEQUENCE , ROW_WAIT_OBJ# , R OW_WAIT_FILE# , ROW_WAIT_BLOCK# , ROW_WAIT_RO W# , TOP_LEVEL_CALL#, LOGON_TIME , LAST_CAL L_ET , PDML_ENABLED , FAILOVER_TYPE , FAILOVE R_METHOD , FAILED_OVER, RESOURCE_CONSUMER_GRO UP, PDML_STATUS, PDDL_STATUS, PQ_STATUS, CURR ENT_QUEUE_DURATION, CLIENT_IDENTIFIER, BLOCKI NG_SESSION_STATUS, BLOCKING_INSTANCE, BLOCKIN G_SESSION, FINAL_BLOCKING_SESSION_STATUS, FIN AL_BLOCKING_INSTANCE, FINAL_BLOCKING_SESSION, SEQ#, EVENT#,EVENT,P1TEXT,P1,P1RAW,P2TEXT,P2 ,P2RAW, P3TEXT,P3,P3RAW,WAIT_CLASS_ID, WAIT_C LASS#,WAIT_CLASS,WAIT_TIME, SECONDS_IN_WAIT,S TATE,WAIT_TIME_MICRO,TIME_REMAINING_MICRO, TI ME_SINCE_LAST_WAIT_MICRO,SERVICE_NAME, SQL_TR ACE, SQL_TRACE_WAITS, SQL_TRACE_BINDS, SQL_TR ACE_PLAN_STATS, SESSION_EDITION_ID, CREATOR_A DDR, CREATOR_SERIAL#, ECID from GV$SESSION w here inst_id = USERENV('Instance') SQL> select * from v$fixed_view_definition where view_name ='GV$SESSION'; VIEW_NAME VIEW_DEFINITION --------------- --------------------------------------------- GV$SESSION select s.inst_id,s.addr,s.indx,s.ksuseser,s.k suudses,s.ksusepro,s.ksuudlui,s.ksuudlna,s.ks uudoct,s.ksusesow, decode(s.ksusetrn,hextoraw ('00'),null,s.ksusetrn),decode(s.ksqpswat,hex toraw('00'),null,s.ksqpswat),decode(bitand(s. ksuseidl,11),1,'ACTIVE',0,decode(bitand(s.ksu seflg,4096),0,'INACTIVE','CACHED'),2,'SNIPED' ,3,'SNIPED', 'KILLED'),decode(s.ksspatyp,1,'D EDICATED',2,'SHARED',3,'PSEUDO',4,'POOLED','N ONE'), s.ksuudsid,s.ksuudsna,s.ksuseunm,s.ks usepid, s.ksusemnm,s.ksusemnp,s.ksusetid,s.ks usepnm, decode(bitand(s.ksuseflg,19),17,'BACK GROUND',1,'USER',2,'RECURSIVE','?'), s.ksuses ql, s.ksusesqh, s.ksusesqi, decode(s.ksusesch , 65535, to_number(null), s.ksusesch), s.ksu sesesta, decode(s.ksuseseid, 0, to_number(nu ll), s.ksuseseid), s.ksusepsq, s.ksusepha, s .ksusepsi, decode(s.ksusepch, 65535, to_numb er(null), s.ksusepch), s.ksusepesta, decode (s.ksusepeid, 0, to_number(null), s.ksusepeid ), decode(s.ksusepeo,0,to_number(null),s.ksu sepeo), decode(s.ksusepeo,0,to_number(null), s.ksusepes), decode(s.ksusepco,0,to_number(n ull), decode(bitand(s.ksusstmbv, powe r(2,11)), power(2,11), s.ksusepco, to_number(null))), decode(s.ksusepcs,0, to_number(null), decode(bitand(s.ksus stmbv, power(2,11)), power(2,11), s.ksusepcs, to_number(null))), s.ksuseap p, s.ksuseaph, s.ksuseact, s.ksuseach, s.ksus ecli, s.ksusefix, s.ksuseobj, s.ksusefil, s.k suseblk, s.ksuseslt, s.ksuseorafn, s.ksuselt m, s.ksusectm,decode(bitand(s.ksusepxopt, 12) ,0,'NO','YES'),decode(s.ksuseft, 2,'SESSION', 4,'SELECT',8,'TRANSACTIONAL','NONE'),decode( s.ksusefm,1,'BASIC',2,'PRECONNECT',4,'PREPARS E','NONE'),decode(s.ksusefs, 1, 'YES', 'NO'), s.ksusegrp,decode(bitand(s.ksusepxopt,4),4,'E NABLED',decode(bitand(s.ksusepxopt,8),8,'FORC ED','DISABLED')),decode(bitand(s.ksusepxopt,2 ),2,'FORCED',decode(bitand(s.ksusepxopt,1),1, 'DISABLED','ENABLED')),decode(bitand(s.ksusep xopt,32),32,'FORCED',decode(bitand(s.ksusepxo pt,16),16,'DISABLED','ENABLED')), s.ksusecqd , s.ksuseclid, decode(s.ksuseblocker,4294967 295,'UNKNOWN', 4294967294, 'UNKNOWN',4294967 293,'UNKNOWN',4294967292,'NO HOLDER', 429496 7291,'NOT IN WAIT','VALID'),decode(s.ksuseblo cker, 4294967295,to_number(null),4294967294,t o_number(null), 4294967293,to_number(null), 4 294967292,to_number(null),4294967291, to_num ber(null),bitand(s.ksuseblocker, 2147418112)/ 65536),decode(s.ksuseblocker, 4294967295,to_n umber(null),4294967294,to_number(null), 42949 67293,to_number(null), 4294967292,to_number(n ull),4294967291, to_number(null),bitand(s.ks useblocker, 65535)), decode(s.ksusefblocker, 4294967295,'UNKNOWN', 4294967294, 'UNKNOWN', 4294967293,'UNKNOWN',4294967292,'NO HOLDER', 4294967291,'NOT IN WAIT','VALID'),decode(s.k susefblocker,4294967295,to_number(null),42949 67294,to_number(null), 4294967293,to_number(n ull), 4294967292,to_number(null),4294967291, to_number(null),bitand(s.ksusefblocker, 2147 418112)/65536),decode(s.ksusefblocker,4294967 295,to_number(null),4294967294,to_number(null ), 4294967293,to_number(null), 4294967292,to_ number(null),4294967291, to_number(null),bit and(s.ksusefblocker, 65535)), w.kslwtseq,w.k slwtevt,e.kslednam,e.ksledp1,w.kslwtp1,w.kslw tp1r, e.ksledp2,w.kslwtp2,w.kslwtp2r,e.ksledp 3,w.kslwtp3,w.kslwtp3r, e.ksledclassid,e.ksle dclass#,e.ksledclass, decode(w.kslwtinwait, 0,decode(bitand(w.kslwtflags,256), 0,-2, decode(roun d(w.kslwtstime/10000), 0,-1, round(w.kslwtst ime/10000))), 0), decode(w.kslwtinwait ,0,round((w.kslwtstime+w.kslwtltime)/1000000) , round(w.kslwtstime/1000000)), decode(w.ksl wtinwait,1,'WAITING', decode(bitand(w.kslwtf lags,256),0,'WAITED UNKNOWN TIME', decode(r ound(w.kslwtstime/10000),0,'WAITED SHORT TIME ', 'WAITED KNOWN TIME'))),w.kslwtstime, de code(w.kslwtinwait,0,to_number(null), decode (bitand(w.kslwtflags,64),64,0,w.kslwttrem)), w.kslwtltime,s.ksusesvc, decode(bitand(s.ksus eflg2,32),32,'ENABLED','DISABLED'),decode(bit and(s.ksuseflg2,64),64,'TRUE','FALSE'),d SQL> l 1* select * from v$fixed_view_definition GV$CLONEDFILE select INST_ID, SNAPSHOTFILENAME, CLONEFILENA ME, SNAPSHOTBLKREAD, SNAPSHOTREQUEST, FILENU MBER, BLOCKS_ALLOCATED from x$ksfdsscloneinf o V$CLONEDFILE select SNAPSHOTFILENAME, CLONEFILENAME, SNAPS HOTBLKREAD, SNAPSHOTREQUEST, FILENUMBER, BLO CKS_ALLOCATED from gv$clonedfile
疑问，查询Oracle动态性能视图定义，建议使用v$fixed_view_definition
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