Script to Collect Data Guard Primary Site Diagnostic Information [ID 241374.1]

I generally don’t cut and paste metalink notes. But in case you are using DG , for diagnosis you will have to use 2 metalink scripts, [ID 241438.1] & [ID 241374.1]

Script to Collect Data Guard Primary Site Diagnostic Information [ID 241374.1]
 Modified 20-APR-2011     Type SCRIPT     Status PUBLISHED      

Overview
--------
This script is intended to provide an easy method to provide information
necessary to troubleshoot Data Guard issues.

Script Notes
-------------

This script is intended to be run via sqlplus as the SYS or Internal user.

Script
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-- NAME: dg_prim_diag.sql  (Run on PRIMARY with a LOGICAL or PHYSICAL STANDBY)
-- ------------------------------------------------------------------------ 
--    Copyright 2002, Oracle Corporation      
-- LAST UPDATED: 2/23/04
--
-- Usage: @dg_prim_diag
-- ------------------------------------------------------------------------ 
-- PURPOSE: 
--    This script is to be used to assist in collection information to help
--    troubeshoot Data Guard issues with an emphasis on Logical Standby.
-- ------------------------------------------------------------------------ 
-- DISCLAIMER: 
--    This script is provided for educational purposes only. It is NOT  
--    supported by Oracle World Wide Technical Support. 
--    The script has been tested and appears to work as intended. 
--    You should always run new scripts on a test instance initially. 
-- ------------------------------------------------------------------------ 
-- Script output is as follows:

set echo off
set feedback off
column timecol new_value timestamp
column spool_extension new_value suffix
select to_char(sysdate,'Mondd_hhmi') timecol,
'.out' spool_extension from sys.dual;
column output new_value dbname
select value || '_' output
from v$parameter where name = 'db_name';
spool dg_prim_diag_&&dbname&&timestamp&&suffix
set linesize 79
set pagesize 35
set trim on
set trims on
alter session set nls_date_format = 'MON-DD-YYYY HH24:MI:SS';
set feedback on
select to_char(sysdate) time from dual;

set echo on

-- In the following the database_role should be primary as that is what
-- this script is intended to be run on.  If protection_level is different
-- than protection_mode then for some reason the mode listed in
-- protection_mode experienced a need to downgrade.  Once the error
-- condition has been corrected the protection_level should match the
-- protection_mode after the next log switch.

column role format a7 tru
column name format a10 wrap

select name,platform_id,database_role role,log_mode,
 flashback_on flashback,protection_mode,protection_level 
from v$database;

-- ARCHIVER can be (STOPPED | STARTED | FAILED). FAILED means that the
-- archiver failed to archive a log last time, but will try again within 5
-- minutes. LOG_SWITCH_WAIT The ARCHIVE LOG/CLEAR LOG/CHECKPOINT event log
-- switching is waiting for.  Note that if ALTER SYSTEM SWITCH LOGFILE is
-- hung, but there is room in the current online redo log, then value is
-- NULL

column host_name format a20 tru
column version format a9 tru

select instance_name,host_name,version,archiver,log_switch_wait
from v$instance;

-- The following query give us information about catpatch.
-- This way we can tell if the procedure doesn't match the image.

select version, modified, status from dba_registry
where comp_id = 'CATPROC';

-- Force logging is not mandatory but is recommended.  Supplemental
-- logging must be enabled if the standby associated with this primary is
-- a logical standby. During normal operations it is acceptable for
-- SWITCHOVER_STATUS to be SESSIONS ACTIVE or TO STANDBY.

column force_logging format a13 tru
column remote_archive format a14 tru
column dataguard_broker format a16 tru

select force_logging,remote_archive,
 supplemental_log_data_pk,supplemental_log_data_ui,
 switchover_status,dataguard_broker
from v$database; 

-- This query produces a list of all archive destinations.  It shows if
-- they are enabled, what process is servicing that destination, if the
-- destination is local or remote, and if remote what the current mount ID
-- is.

column destination format a35 wrap
column process format a7
column archiver format a8
column ID format 99
column mid format 99

select dest_id "ID",destination,status,target,
 schedule,process,mountid  mid
from v$archive_dest order by dest_id;

-- This select will give further detail on the destinations as to what
-- options have been set.  Register indicates whether or not the archived
-- redo log is registered in the remote destination control file.

set numwidth 8
column ID format 99

select dest_id "ID",archiver,transmit_mode,affirm,async_blocks async,
 net_timeout net_time,delay_mins delay,reopen_secs reopen,
 register,binding
from v$archive_dest order by dest_id;

-- The following select will show any errors that occured the last time
-- an attempt to archive to the destination was attempted.  If ERROR is
-- blank and status is VALID then the archive completed correctly.

column error format a55 wrap

select dest_id,status,error from v$archive_dest;

-- The query below will determine if any error conditions have been
-- reached by querying the v$dataguard_status view (view only available in
-- 9.2.0 and above):

column message format a80

select message, timestamp
from v$dataguard_status
where severity in ('Error','Fatal')
order by timestamp;

-- The following query will determine the current sequence number
-- and the last sequence archived.  If you are remotely archiving
-- using the LGWR process then the archived sequence should be one
-- higher than the current sequence.  If remotely archiving using the
-- ARCH process then the archived sequence should be equal to the
-- current sequence.  The applied sequence information is updated at
-- log switch time.

select ads.dest_id,max(sequence#) "Current Sequence",
 max(log_sequence) "Last Archived"
 from v$archived_log al, v$archive_dest ad, v$archive_dest_status ads
 where ad.dest_id=al.dest_id
 and al.dest_id=ads.dest_id
 and al.resetlogs_change#=(select max(resetlogs_change#) from v$archived_log )
 group by ads.dest_id;

-- The following select will attempt to gather as much information as
-- possible from the standby.  SRLs are not supported with Logical Standby
-- until Version 10.1.

set numwidth 8
column ID format 99
column "SRLs" format 99
column Active format 99

select dest_id id,database_mode db_mode,recovery_mode,
 protection_mode,standby_logfile_count "SRLs",
 standby_logfile_active ACTIVE,
 archived_seq#
from v$archive_dest_status;

-- Query v$managed_standby to see the status of processes involved in
-- the shipping redo on this system.  Does not include processes needed to
-- apply redo.

select process,status,client_process,sequence#
from v$managed_standby;

-- The following query is run on the primary to see if SRL's have been
-- created in preparation for switchover.

select group#,sequence#,bytes from v$standby_log;

-- The above SRL's should match in number and in size with the ORL's
-- returned below:

select group#,thread#,sequence#,bytes,archived,status from v$log;

-- Non-default init parameters.

set numwidth 5
column name format a30 tru
column value format a48 wra
select name, value
from v$parameter
where isdefault = 'FALSE';

spool off

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