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--cascade blocking@gv$sessionselect *  from (select a.inst_id, a.sid, a.serial#,               a.sql_id,               a.event,               a.status,               connect_by_isleaf as isleaf,               sys_connect_by_path(a.SID||'@'||a.inst_id, ' <- ') tree,               level as tree_level          from gv$session a         start with a.blocking_session is not null        connect by (a.sid||'@'||a.inst_id) = prior (a.blocking_session||'@'||a.blocking_instance)) where isleaf = 1 order by tree_level asc;

增加spid方便杀进程。

Select c.spid from v$process c where c.addr=(select b.paddr from v$session b where b.sid=496);

根据sql_id找对应执行文本和机器名、执行moduleselect SQL_TEXT,SQL_FULLTEXT,SQL_ID,LOADS,FIRST_LOAD_TIME,PLSQL_EXEC_TIME,JAVA_EXEC_TIME,ROWS_PROCESSED,COMMAND_TYPE,PARSING_USER_ID,PARSING_SCHEMA_ID,PARSING_SCHEMA_NAME,KEPT_VERSIONS,ADDRESS,SERVICE,MODULE,MODULE_HASH,ACTION,CPU_TIME,ELAPSED_TIME,OUTLINE_SID,CHILD_ADDRESS,SQLTYPE,REMOTE,OBJECT_STATUS,LITERAL_HASH_VALUE,LAST_LOAD_TIME,PROGRAM_ID,PROGRAM_LINE#,LAST_ACTIVE_TIME from  v$sql where sql_id='2addn6gdfbqxf'; select * from dba_hist_sqltext where sql_id='2addn6gdfbqxf'; select SNAP_ID,DBID,INSTANCE_NUMBER,SESSION_ID,SESSION_SERIAL#,SESSION_TYPE,FLAGS,USER_ID,SQL_ID,SQL_OPNAME,SQL_EXEC_ID,SQL_EXEC_START,EVENT,EVENT_ID,PROGRAM,MODULE,MACHINE,PORT from dba_hist_active_sess_history where sql_id='2addn6gdfbqxf';根据sid查询已经执行过的sqlselect sql_text from v$sqlarea a,v$session b where a.SQL_ID=b.PREV_SQL_ID and b.SID=&sid;--------------------------------------------------------------------------------------根据sid查询当前执行的sqlselect sql_text from v$sqlarea where (hash_value,address)=(select sql_hash_value,sql_address from v$session where sid=&sid);

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