oracle 12c - ORACLEAGENT BLOG

Generate Bulk AWR reports in database

select SNAP_ID, BEGIN_INTERVAL_TIME, END_INTERVAL_TIME
from dba_hist_snapshot
where trunc(BEGIN_INTERVAL_TIME)=trunc(sysdate-&no)
order by 1;

CREATE OR REPLACE DIRECTORY awr_reports_dir AS ‘/tmp/awrreports’;

DECLARE
— Adjust before use.
l_snap_start NUMBER := 4884; –Specify Initial Snap ID
l_snap_end NUMBER := 4892; –Specify End Snap ID
l_dir VARCHAR2(50) := ‘AWR_REPORTS_DIR’;

l_last_snap NUMBER := NULL;
l_dbid v$database.dbid%TYPE;
l_instance_number v$instance.instance_number%TYPE;
l_file UTL_FILE.file_type;
l_file_name VARCHAR(50);

BEGIN
SELECT dbid
INTO l_dbid
FROM v$database;

SELECT instance_number
INTO l_instance_number
FROM v$instance;

FOR cur_snap IN (SELECT snap_id
FROM dba_hist_snapshot
WHERE instance_number = l_instance_number
AND snap_id BETWEEN l_snap_start AND l_snap_end
ORDER BY snap_id)
LOOP
IF l_last_snap IS NOT NULL THEN
l_file := UTL_FILE.fopen(l_dir, ‘awr_’ || l_last_snap || ‘_’ || cur_snap.snap_id || ‘.html’, ‘w’, 32767);

FOR cur_rep IN (SELECT output
FROM TABLE(DBMS_WORKLOAD_REPOSITORY.awr_report_html(l_dbid, l_instance_number, l_last_snap, cur_snap.snap_id)))
LOOP
UTL_FILE.put_line(l_file, cur_rep.output);
END LOOP;
UTL_FILE.fclose(l_file);
END IF;
l_last_snap := cur_snap.snap_id;
END LOOP;

EXCEPTION
WHEN OTHERS THEN
IF UTL_FILE.is_open(l_file) THEN
UTL_FILE.fclose(l_file);

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How to find current redo log size in database

SELECT le.leseq “Current log sequence No”,
100*cp.cpodr_bno/le.lesiz “Percent Full”,
cp.cpodr_bno “Current Block No”,
le.lesiz “Size of Log in Blocks”
FROM x$kcccp cp, x$kccle le
WHERE le.leseq =CP.cpodr_seq
AND bitand(le.leflg,24) = 8
/

View hidden parameters

Set lines 2000
col NAME for a45
col DESCRIPTION for a100
SELECT name,description from SYS.V$PARAMETER WHERE name LIKE ‘_%’ ESCAPE ‘\’
/

Get database link details in database

set pagesize 200
set lines 200
col db_link for a19
set long 999
SELECT db_link,
owner_id,
logged_on,
heterogeneous,
open_cursors,
in_transaction,
update_sent
FROM gv$dblink
ORDER BY db_link;

Get DDL of privileges granted to user

set feedback off pages 0 long 900000 lines 20000 pagesize 20000 serveroutput on
accept USERNAME prompt “Enter username :”

execute dbms_METADATA.SET_TRANSFORM_PARAM(DBMS_METADATA.SESSION_TRANSFORM,’SQLTERMINATOR’,true);

SELECT DBMS_METADATA.GET_DDL(‘USER’,username) as script from DBA_USERS where username=’&username’
UNION ALL
SELECT DBMS_METADATA.GET_GRANTED_DDL(‘SYSTEM_GRANT’,grantee)as script from DBA_SYS_PRIVS where grantee=’&username’ and rownum=1
UNION ALL
SELECT DBMS_METADATA.GET_GRANTED_DDL(‘ROLE_GRANT’,grantee)as script from DBA_ROLE_PRIVS where grantee=’&username’ and rownum=1
UNION ALL
SELECT DBMS_METADATA.GET_GRANTED_DDL(‘OBJECT_GRANT’,grantee)as script from DBA_TAB_PRIVS where grantee=’&username’ and rownum=1;

Get timezone information in database

SELECT version FROM v$timezone_file;

SELECT PROPERTY_NAME, SUBSTR(property_value, 1, 30) value
FROM DATABASE_PROPERTIES
WHERE PROPERTY_NAME LIKE ‘DST_%’
ORDER BY PROPERTY_NAME;

How to View / Modify AWR retention period

— View current AWR retention period

select retention from dba_hist_wr_control;

— Modify retention period to 7 days and interval to 30 min

select dbms_workload_repository.modify_snapshot_settings (interval => 30, retention => 10080);

NOTE – 7 DAYS = 7243600= 10080 minutes

Generate Bulk AWR reports in database

How to find current redo log size in database

View hidden parameters

Get database link details in database

Get DDL of privileges granted to user

Get timezone information in database

How to View / Modify AWR retention period

Check the Characterset info of database

Check Installed RDBMS components

How to Get Alert log location in db

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