oracle 6

监控事务回滚进度：

select n.USED_UBLK*x.VALUE/1024/1024 ,s.*

from gv$transaction n, gv$session s,

v$parameter x

where n.INST_ID = s.INST_ID

and n.ADDR = s.TADDR

and x.name = 'db_block_size'

and n.INST_ID = 2;

--

select ((select (nvl(sum(bytes), 0))

from dba_undo_extents

where tablespace_name = 'UNDOTBS1'

and status in ('ACTIVE'/*, 'UNEXPIRED'*/ )) * 100) /

(select sum(bytes)

from dba_data_files

where tablespace_name = 'UNDOTBS1')

"PCT_INUSE"

from dual;

Script to Monitor SMON Rollback Progress [ID 1352046.1]

Master Note: Troubleshooting Database Transaction Recovery (文档 ID 1494886.1)

Rollback Is Taking A Long Time After Session Killed (文档 ID 1060831.6)

V$FAST_START_TRANSACTIONS displays information about the progress of the transactions that Oracle is recovering.

评估事务回滚完成时间

select inst_id,

usn,

state,

undoblockstotal "Total",

undoblocksdone "Done",

undoblockstotal - undoblocksdone "ToDo",

decode(cputime,

0,

'unknown',

to_char(sysdate + (((undoblockstotal - undoblocksdone) /

(undoblocksdone / cputime)) / 86400),'yyyy-mm-dd hh24:mi:ss')) "Estimated time to complete"

from gv$fast_start_transactions;

select min(s.snap_id), max(s.snap_id)

From dba_hist_snapshot s

where s.end_interval_time >=

to_date('2014-06-01 00:00:00', 'yyyy-mm-dd hh24:mi:ss')

根据XID找出造成回滚的语句

select /*+ parallel(8) */

distinct h.sql_id

from gv$fast_start_transactions st, dba_hist_active_sess_history h where st.STATE = 'RECOVERING'

and st.XID = h.xid

and st.INST_ID = h.instance_number

and h.snap_id >= 60197

and h.snap_id <= 60330;

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查看权限：

select * from user_sys_privs where username in ('PERFSTAT');

select * from user_role_privs where username in ('PERFSTAT');

select * from user_TAB_PRIVS where grantee in ('PERFSTAT');

select * from dba_role_privs where grantee in ('PERFSTAT');

select * from dba_sys_privs where grantee in ('PERFSTAT');