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  • Script to Refresh Materialized Views

    The following script can be used to refresh materialized views that are capable of FAST (incremental) refresh automatically. Can be used on EBS database as well if you un-comment the commented (REM) lines. The refresh criteria used is any fast refresh-able materialized view that has not been refreshed in the past 24 hours, but was refreshed in the last one month…

    REM Uncomment below line if EBS database
REM alter session set current_schema=apps;

set serveroutput on size 9999

Declare
cursor mv2ref is select owner ||'.'||  mview_name mview
       from dba_mviews
       where last_refresh_date between sysdate -30 and sysdate -1
       and fast_refreshable = 'DML';
dummy pls_integer;

begin

REM Uncomment below line if EBS database
REM select MRP_AP_REFRESH_S.NEXTVAL into dummy from dual;

for rmv2ref in mv2ref loop
begin
    dbms_mview.refresh(rmv2ref.mview, 'F');
    dbms_output.put_line(rmv2ref.mview ||' Refreshed at '|| to_char(systimestamp));

exception
when others then
    dbms_output.put_line(rmv2ref.mview ||' Errored at '|| to_char(systimestamp));
    dbms_output.put_line('    Error: '|| sqlcode ||':'||sqlerrm);

end;

end loop;

end;
/

    Enjoy!

  • Query – Tablespace Max Size

    I sometimes see concerned emails from developers that they are running out of space in tablespace and the DBA need to do something immediately. The DBA will start wondering we have monitoring in place, then how come it did not catch an out of space situation, but a user/developer did…

    For you developer/user, if you are wondering if your database/tablespace is running out of space, you may need to check if the tablespace has autoextensible data files…

    Here is a simple query, that could be used to find the current size of the tablespace and how much it can grow using the autoextensible feature of data file.

      SELECT tablespace_name,
             ROUND (SUM (bytes) / 1048576) curr_size,
             ROUND (SUM (GREATEST (bytes, DECODE (autoextensible, ‘YES’, maxbytes, 0)))/ 1048576)  growable
        FROM dba_data_files
    GROUP BY tablespace_name
    ORDER BY tablespace_name;