Dataguard showing 8hr lag between logs between primary and physical

I'm showing around 8 hrs between when my primary sends the redo to my physical standby. My protection mode is at maximum performance. I'm wondering if I should change the time that my primary sends the redo to something shorter? Is this ok to have such a span between when the primary sends the redo?
thanks.
Message was edited by:
Bogey

Are you saying it's taking 8 hrs to transfer a log to the physical standby or 8hrs to apply that log?
I suspect its the latter (unless you have huge logfiles and a slow network!) so yes you can tune the delay, its the DELAY parameter in the log_archive_dest_n paramater. Check to see what you have that set to.
As to whether 8hrs is ok is entirely dependent on your business and your service level agreements, so you'll have to answer that.

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DB Version:11.2.0.1.0
Server :AIX
Primary:
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Last Sequence Applied
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2 FROM (SELECT THREAD# ,SEQUENCE# FROM V$ARCHIVED_LOG WHERE (THREAD#,FIRST_TIME ) IN (SELECT THREAD#,MAX(FIRST_TIME) FROM V$ARCHIVED_LOG GROUP BY THREAD#)) ARCH,
3 (SELECT THREAD# ,SEQUENCE# FROM V$LOG_HISTORY WHERE (THREAD#,FIRST_TIME ) IN (SELECT THREAD#,MAX(FIRST_TIME) FROM V$LOG_HISTORY GROUP BY THREAD#)) APPL
WHERE ARCH.THREAD# = APPL.THREAD#;
4
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NAME                             'HOUR TO_NUMBER(SUBSTR(VALUE,5,2))
apply lag                        Hours                            8------------------------------------------------------------------>>>Problem area

SQL> SELECT status, error
FROM V$ARCHIVE_DEST_STATUS
WHERE STATUS <> 'DEFERRED' AND STATUS <> 'INACTIVE'; 2    3
STATUS    ERROR
VALID
VALID
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NAME                             'AL
SUBSTR(VALUE,1,12)
apply lag                        ALL
+00 04:11:03
SQL> SQL>   2
NAME                             'SECOND TO_NUMBER(SUBSTR(VALUE,11,2))
apply lag                        Seconds                             3
SQL> SQL>   2
NAME                             'MINUTE TO_NUMBER(SUBSTR(VALUE,8,2))
apply lag                        Minutes                           11
SQL> SQL>   2
NAME                             'HOUR TO_NUMBER(SUBSTR(VALUE,5,2))
apply lag                        Hours                            4
SQL> SQL>   2
NAME                             'DAY TO_NUMBER(SUBSTR(VALUE,2,2))
apply lag                        Days                            0

How to switch between primary and secondary langua...

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Hi
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O''philipp [[#answer-697652|said]]''
<blockquote>
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Hi,
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Hello;
Depending upon the query you are using "Real time apply" might show as 1 log behind. Is this possible?
Example from mine :
STANDBY               SEQUENCE# APPLIED    COMPLETIO
STANDBY2                 10711 YES        31-MAY-12
STANDBY2                 10712 YES        31-MAY-12
STANDBY2                 10713 YES        31-MAY-12
STANDBY2                 10714 YES        31-MAY-12
STANDBY2                 10715 YES        31-MAY-12
STANDBY2                 10716 YES        31-MAY-12
STANDBY2                 10717 YES        31-MAY-12
STANDBY2                 10718 YES        31-MAY-12
STANDBY2                 10719 YES        31-MAY-12
STANDBY2                 10720 YES        31-MAY-12
STANDBY2                 10721 YES        31-MAY-12
STANDBY2                 10722 YES        31-MAY-12
STANDBY2                 10723 YES        31-MAY-12
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Best Regards
mseberg
Edited by: mseberg on Jun 14, 2012 7:28 AM

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Hi Frank,
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public static TreeModel getSchedulingGanttModel()
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r2.addTask(t21b);
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r5.addTask(t52);
r5.addTask(t53);
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r6.addTask(t61B);
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r6.addTask(t61c);
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r6.addTask(t61d);
Employee _r7 = new Employee("r7", "Dominique Monstratelli", "Technical Staff", "06:00", "15:00", null);
Task t71 = new Task("t71", "wwwState Machine", r7.getResourceId(), _r7.getResourceName(), parseDate("12/21/2006 13:00"), parseDate("12/21/2006 15:30"), "blue");
t71.setLabel(t71.getTaskName());
Task t72 = new Task("t72", "Johnson", r7.getResourceId(), _r7.getResourceName(), parseDate("12/21/2006 15:00"), parseDate("12/21/2006 16:30"), "aqua");
t72.setLabel(t72.getTaskName());
r7.addTask(t71);
r7.addTask(t72);
Task t73 = new Task("t73", "State Machine", r7.getResourceId(), _r7.getResourceName(), parseDate("12/22/2006 10:00"), parseDate("12/22/2006 11:30"), "levander");
t73.setLabel(t73.getTaskName());
Task t74 = new Task("t74", "Johnson", r7.getResourceId(), _r7.getResourceName(), parseDate("12/22/2006 15:00"), parseDate("12/22/2006 16:30"), "blue");
t74.setLabel(t74.getTaskName());
r7.addTask(t73);
r7.addTask(t74);
Employee _r8 = new Employee("r8", "Sue Morgan", "Technical Staff", "06:00", "15:00", null);
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t82.setLabel(t82.getTaskName());
_t82.setStartupTime(15);
Task t83 = new Task("t83", "Johnson", r8.getResourceId(), _r8.getResourceName(), parseDate("12/21/2006 15:15"), parseDate("12/21/2006 16:00"), "tan");
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r8.addTask(t81);
r8.addTask(t82);
r8.addTask(t83);
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resources.add(r1);
resources.add(r2);
resources.add(r3);
resources.add(r4);
resources.add(r5);
resources.add(r6);
resources.add(r7);
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Dataguard 9iR2 using same SID for primary and physical standby issues

Hello, I have been following the Creating Physical Standby Database document from Oracle setting up a physical clone for a 9iR2 database on Solaris 9 environment between two identical workstations. I want to databases to have the same SID for relatively seemless failover however the redo logs are not pushed to the physical clone. when I switch a logfile on the primary and then query v$archive_dest on dest_id=2 I get a status of ERROR and the ERROR is the ORA-12154 TNS service name error.
Here is a summary of my setup:
Primary - SID = PROD1, located on WS001
Clone - SID = PROD1, located on WS002
SPFILE settings on Primary:
*.db_name='PROD1'
*.dg_broker_start=true
*.fal_client='PROD1_node2'
*.fal_server='PROD1_node1'
*.log_archive_dest_2='service=PROD1_node2 optional lgwr async=20480 noaffirm reopen=15 max_failure=10 delay=30 net_timeout=30'
tnsnames.ora on Primary:
PROD1_node2 =
(DESCRIPTION =
(ADDRESS_LIST =
(ADDRESS = (PROTOCOL = TCP) (HOST = WS002) (PORT = 1521))
(CONNECT_DATA =
(SID = PROD1)
listener.ora on secondary:
PROD1_node2 =
(ADDRESS_LIST =
(ADDRESS = (PROTOCOL = TCP) (HOST = WS002) (PORT = 1521))
SID_LIST_PROD1_node2 =
(SID_LIST =
(SID_DESC =
(ORACLE_HOME = /export/oracle/oracle_9.2/PROD1)
(SID_NAME = PROD1)
Any input would be appreciated. I can provide whatever else you might need. I thought this was the most pertinent to this problem.
Thanks.
Jim

I have been looking at the sqlnet.ora files for the two databases
for WS001:
Names.Default_Domain = WS001.example.com
Names.Directory_Path = (TNSNAMES, ONAMES,HOSTNAME)
for WS002:
Names.Default_Domain = WS002.example.com
Names.Directory_Path = (TNSNAMES, ONAMES,HOSTNAME)
I cannot connect with sqlplus from WS001 to WS002 on the other machine.

Dataguard showing 8hr lag between logs between primary and physical

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