Execution Time of an SQL using SQL_ID with respect to SNAP_ID

Here we can calculate Elapsed of time of an sql statement using sql id. Below query will figure out the Elapsed time in seconds.



col begin_time for a25
col end_time for a11
col inst for 99999
col snapid for 999999
set lines 200
set pages 20000
select snap_id snapid,
(select substr(BEGIN_INTERVAL_TIME,1,18)||' '||substr(BEGIN_INTERVAL_TIME,24,2) from dba_hist_snapshot b where b.snap_id=a.snap_id and

a.INSTANCE_NUMBER=b.INSTANCE_NUMBER) begin_time
,(select substr(end_INTERVAL_TIME,11,8)||' '||substr(end_INTERVAL_TIME,24,2) from dba_hist_snapshot b where b.snap_id=a.snap_id and

a.INSTANCE_NUMBER=b.INSTANCE_NUMBER) end_time
,INSTANCE_NUMBER inst , PLAN_HASH_VALUE,
EXECUTIONS_DELTA Executions,
ROWS_PROCESSED_DELTA rows1,
round( CPU_TIME_DELTA /1000000,0) cpu_time,round(IOWAIT_DELTA /1000000,0) io_wait,
round( ELAPSED_TIME_DELTA /1000000,0) elapsed
from wrh$_sqlstat a where sql_id in('&SQL_ID')
order by snap_id, INSTANCE_NUMBER;

Thanks,

Jyothish Balakrishnan

Archive Generation Details

Archive Generation per Hour

ALTER SESSION SET NLS_DATE_FORMAT = 'YYYY MM DD HH24:MI:SS';
select trunc(COMPLETION_TIME,'HH') Hour,round(sum(BLOCKS*BLOCK_SIZE)/1024/1024/1024) GB,count(*) Archives from v$archived_log group by trunc(COMPLETION_TIME,'HH') order by 1 ;

Archive Generation per Day

select trunc(COMPLETION_TIME,'DD') Day, round(sum(BLOCKS*BLOCK_SIZE)/1024/1024/1024) GB,count(*) Archives_Generated from v$archived_log
group by trunc(COMPLETION_TIME,'DD') order by 1;

How to find out ASM file locations for a Database

column full_alias_path format a70
column file_type format a15


select concat('+'||gname, sys_connect_by_path(aname, '/')) full_alias_path,
       system_created, alias_directory, file_type
from ( select b.name gname, a.parent_index pindex, a.name aname,
              a.reference_index rindex , a.system_created, a.alias_directory,
              c.type file_type
       from v$asm_alias a, v$asm_diskgroup b, v$asm_file c
       where a.group_number = b.group_number
             and a.group_number = c.group_number(+)
             and a.file_number = c.file_number(+)
             and a.file_incarnation = c.incarnation(+)
     )
start with (mod(pindex, power(2, 24))) = 0
            and rindex in
                ( select a.reference_index
                  from v$asm_alias a, v$asm_diskgroup b
                  where a.group_number = b.group_number
                        and (mod(a.parent_index, power(2, 24))) = 0
                        and a.name = '&DATABASENAME'
                )
connect by prior rindex = pindex;


You can use this query with any Database running on the same server for a Database.