Doubt in Dataguard concept
Dear all,
Please help me regarding this i am very much confused.....
I had couple of doubts in dataguard concepts.
1)When archive log is transferred from primary to standby ,
a.Whether DBWR will be in active state or not in standby server.To write the contents in the archived redo log files which came from the primary to the datafiles of the standby server.
b.I am using online redo logs in the standby server not standby redo logs , whether online redologs in the standby server will have any effect in shipping of redologs from the primary database,
c. In my standby database online redo logs state is changing between CLEARING AND CLEARING CURRENT.How standby server redologs will change it state,
Regards,
Vamsi.
Hi again,
They are not used in a physical standby database. They exist in order to be used in a case of opening the standby database read-write (failover/snapshot standby). Here what documentation says:
Online redo logs
Every instance of an Oracle primary database and logical standby database has an associated online redo log to protect the database in case of an instance failure. Physical standby databases do not have an associated online redo log, because physical standby databases are never opened for read/write I/O; changes are not made to the database and redo data is not generated.
Create an Online Redo Log on the Standby Database
Although this step is optional, Oracle recommends that an online redo log be created when a standby database is created. By following this best practice, a standby database will be ready to quickly transition to the primary database role.
...
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Hi everybody,
I have few doubts in GeoRaster concepts.
I did mosaicing of multiple Georasater objects using "sdo_geor.getRasterSubset()" and able to display image properly. But while doing this I come across few people suggestions. They said that mosaicing multiple rows together in a GeoRaster table is not going produce meaningful results because the interpolation methods wont have access to the data in the adjacent cells at the seams because cell needed exist in a different row (i.e. where two rows of GeoRaster either abut or overlap).
I assume Oracle takes care of all this. Please suggest wheather my assumption is true or the statement given is true?
Regards,
Baskar
Edited by: user_baski on May 16, 2010 10:49 PMHi Jeffrey,
Requirements:-
I have to do mosaicing of 'n' number of Georaster objects. For eg, if table has 4 rows of GeoRaster object, then i have to create single image by mosaicing all the Georaster object based on the Envelope provided. (Note: I have to do this with Queries without using GeoRaster API)
Workflow:-
1. Get the connection and table details.
2. Retrieve necessary information from the db like SRID, MAXPYRAMID, SPATIALRESOLUTION, EXTENT etc. For getting extent, I used SDO_AGGR_MBR function.
3. With the help of "MDSYS.SDO_FILTER" and bouding box values, I create arraylist which contains raster id's retrieved from raster data table which covers the bouding box value provided in the filter command.
4. Then I passed bounding box value into "sdo_geor.getCellCoordinate" function and I retrieved row and column number of Georaster image and created a number array which contains starting and ending row/column numbers.
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6. I am executing step 5 in a loop with all the raster id's that I got at step 3. For eg, arraylist size is 4, then I will have four BLOB object.
7. Finally, I creating new image from the BLOB objects after some scaling and cropping based on the individual GeneralEnvelope of each raster id object.
I had followed all the above steps and successfully created mosaic image.However, few people suggested that mosaicing in this way does not produce meaningful results because the interpolation methods wont have access to the data in the adjacent cells at the seams because cell needed exist in a different row. I assume Oracle will take care of these things. Moreover, they suggested to keep single row in GeoRaster table instead of muliple rows of Georaster object and suggested to use "SDO_GEOR.updateRaster" function to update a part of the raster object and the pyramids are rebuild automatically.
So Please suggest which is the better way to do mosaicing. Wheather my assumption is correct or not? -
Hi everyone,
I have doubts with some security concepts, i've been reading documents, but i can clear this things up.... here's the thing....
What exactly are a keystore, certificate and .pfx or p12 files?
i understood that a pfx or p12 files are keystores whose have inside public and private keys.... but in my concept a certificate also have a public key and a private key..so i can say that keystores are certificates.... but i'm messing this concepts up, pretty sure of that....
Could anyone help me?
Thanks in Advance
Edited by: cs.santos on Jun 16, 2009 12:28 PM1. Certificates only have public keys in them
2. PFX and PKCS12 are essentially the same thing.
3. PKCS12 is a format that is typically used to store a single keypair, both the public and private parts.
4. KeyStore is a java class the provides storage for keys of all kinds, as the name implies. The KeyStore class supports different formats; one of these is PKCS12 -
Doubt on dataguard maximum perfomance mode
HI Gurus ,
We have a dataguard environment configured in 12.1.0.2.0 on OEL 5.6. Dataguard is configured in maximum performance using following congiguration ,
18:26:26 SQL> show parameter log_archive_dest_2
NAME TYPE VALUE
log_archive_dest_2 string service=TGOID NOAFFIRM LGWR ASYNC COMPRESSION=ENABLE VALID_FOR=(ALL_LOGFILES,PRIMARY_ROLE) DB_UNIQUE_NAME=TGOID
Here I used LGWR ASYNC and enabled real time apply at my standby using ,
SQl> alter database recover managed standby database using current logfile disconnect;
Here are my doubts ,
1. If we enable real time apply ,the changes will reflect at standby when a commit happens at primary. is it correct ?
But here I can't see that behavior , the changes are getting applied to standby only when I make a log switch.(as in the case of ARCH transport mode )
2. So if I wish to get the changes done at standby when a commit happens at primary, is I need to set the following ?
First ,
alter system set log_archive_dest_2=service=TGOID AFFIRM LGWR SYNC COMPRESSION=ENABLE VALID_FOR=(ALL_LOGFILES,PRIMARY_ROLE)DB_UNIQUE_NAME=TGOID scope=both;
Secondly,
ALTER DATABASE SET STANDBY DATABASE TO MAXIMIZE PROTECTION/MAXIMIZE AVAILABILITY .
is it correct ?
3. If its correct what is the advantage of using lgwr async in maximum performance ? then what is meant by real time apply in maximum performance ?
Thanks and regards,
Mahihttp://docs.oracle.com/cd/B19306_01/server.102/b14239/create_ps.htm#i1225703
Step 2 Determine the appropriate number of standby redo log file groups
(maximum number of logfiles for each thread + 1) * maximum number of threads -
Hello All,
I have the below question concerning Oracle 11gR2 with Dataguard.
I have one primary database and one Logical standby database.
I have a question about the below scenario:
In case the primary database failed I will apply the below steps:
1. Failover to the logical standby database. Now it is reacting as a primary database.
2. I restored and recovered the failed primary database and I want to build it as a Logical standby database.
My question is, in that specific step when I restored and recovered my failed primary database, the restore and recovery process may take me two days for example, and the primary database is restored to a certain SCN, but the clients are connected to another database (the new primary) and they are modifying the data on the new primary database while i am recover my failed primary database, so when i convert my failed primary database to a Logical stand by database.
SQL Apply will automatically know from which SCN should start applying redo logs ?
These logs are applied from both archive logs of the new primary database and from the standby redo logs? since some redo logs may have been archived before overwriting.
And same question when i first create any logical standby database, i will create it from a backup copy of the primary database, so based on what the SQL apply will start applying the redo logs ?
how it can indicate that it should start applying redo logs from a certain point (or SCN)?
One more question:
During switch over: both primary and standby databases will be started up in restricted mode?
Hope my questions are clear.
Regards.
Edited by: NB on Oct 24, 2011 3:17 PM
Edited by: NB on Oct 24, 2011 3:18 PMthe result of your query is below :
Know that i used: WHERE DEST_ID = 3
is that because i defined my parameters as below?
on primary:
log_archive_dest_1 = "LOCATION=C:\app\oracle\oradata\windb\LOG_ARCHIVE_DEST_1 VALID_FOR=(ALL_LOGFILES,ALL_ROLES) DB_UNIQUE_NAME=windb"
log_archive_dest_2 = "LOCATION=USE_DB_RECOVERY_FILE_DEST VALID_FOR=(STANDBY_LOGFILE,STANDBY_ROLE)"
log_archive_dest_3 = "SERVICE=dgwindb ASYNC VALID_FOR=(ONLINE_LOGFILES,PRIMARY_ROLE) DB_UNIQUE_NAME=dgwindb"on standby:
log_archive_dest_1 = "LOCATION=C:\app\oracle\oradata\dgwindb\LOG_ARCHIVE_DEST_1 VALID_FOR=(ALL_LOGFILES,ALL_ROLES) DB_UNIQUE_NAME=dgwindb"
log_archive_dest_2 = "LOCATION=USE_DB_RECOVERY_FILE_DEST VALID_FOR=(STANDBY_LOGFILE,STANDBY_ROLE)"
log_archive_dest_3 = "SERVICE=windb ASYNC VALID_FOR=(ONLINE_LOGFILES,PRIMARY_ROLE) DB_UNIQUE_NAME=windb"
STAND_BY, SEQUENCE#, APPLIED, COMPLETION_TIME
dgwindb 130 YES 10/26/2011 5:47:28 PM
dgwindb 131 YES 10/26/2011 5:47:35 PM
dgwindb 132 YES 10/27/2011 1:11:51 PM
dgwindb 133 YES 10/27/2011 1:11:52 PM
dgwindb 134 YES 10/27/2011 1:11:52 PM
dgwindb 135 YES 10/27/2011 1:11:52 PM
dgwindb 136 YES 10/27/2011 1:11:52 PM
dgwindb 137 YES 10/27/2011 1:11:52 PM
dgwindb 138 YES 10/26/2011 6:28:09 PM
dgwindb 139 YES 10/26/2011 6:35:11 PM
DGWINDB 140 YES 10/27/2011 1:12:48 PM
DGWINDB 141 YES 10/27/2011 1:12:49 PM
DGWINDB 142 YES 10/27/2011 1:12:49 PM
DGWINDB 143 YES 10/27/2011 1:12:49 PM
dgwindb 144 YES 10/26/2011 7:03:21 PM
dgwindb 145 YES 10/26/2011 7:09:22 PM
dgwindb 146 YES 10/26/2011 7:14:24 PM
dgwindb 147 YES 10/27/2011 1:12:57 PM
dgwindb 148 YES 10/27/2011 1:12:57 PM
dgwindb 149 YES 10/26/2011 7:32:29 PM
dgwindb 150 YES 10/26/2011 7:39:31 PM
dgwindb 151 YES 10/26/2011 7:45:34 PM
dgwindb 152 YES 10/27/2011 1:13:07 PM
dgwindb 153 YES 10/27/2011 1:13:07 PM
dgwindb 154 YES 10/26/2011 8:03:39 PM
dgwindb 155 YES 10/26/2011 8:10:41 PM
dgwindb 156 YES 10/27/2011 1:13:23 PM
dgwindb 157 YES 10/27/2011 1:13:23 PM
dgwindb 158 YES 10/27/2011 1:13:23 PM
dgwindb 159 YES 10/27/2011 1:13:24 PM
dgwindb 160 YES 10/27/2011 1:13:23 PM
dgwindb 161 YES 10/27/2011 1:13:24 PM
dgwindb 162 YES 10/27/2011 1:13:23 PM
dgwindb 163 YES 10/27/2011 1:13:23 PM
dgwindb 164 YES 10/26/2011 8:57:55 PM
dgwindb 165 YES 10/26/2011 9:04:10 PM
dgwindb 166 YES 10/27/2011 1:13:35 PM
dgwindb 167 YES 10/27/2011 1:13:35 PM
dgwindb 168 YES 10/26/2011 9:21:12 PM
dgwindb 169 YES 10/26/2011 9:28:16 PM
dgwindb 170 YES 10/27/2011 1:13:43 PM
dgwindb 171 YES 10/27/2011 1:13:43 PM
dgwindb 172 YES 10/27/2011 1:13:43 PM
dgwindb 173 YES 10/27/2011 12:36:29 PM
dgwindb 174 YES 10/27/2011 12:41:41 PM
dgwindb 175 YES 10/27/2011 1:13:52 PM
dgwindb 176 YES 10/27/2011 1:13:52 PM
dgwindb 177 YES 10/27/2011 1:13:52 PM
dgwindb 178 YES 10/27/2011 1:13:52 PM
dgwindb 179 YES 10/27/2011 1:11:44 PM
dgwindb 180 YES 10/27/2011 1:21:19 PM -
Doubts on casting concepts in TAW12 part 1
Can someone help me clarify a little confusion on Casting in materials provided by SAP Education on TAW12 part 1.
I attended ILT and my instructor emphasized that: "wherever in this material we read 'Up-cast' or 'Down-cast', we should consider this as an error because what they meant to say is exactly the opposite".
This has now left me confused especially after revising.
Can someone please share some light on these terminologies and concept? especially in relation to materials provided on TAW12 ABAP Workbench Concept Part 1 (2013 SAP AG. All rights reserved)
I have not been able to find much materials online for this section of the book and for many others.
Any help would be greatly appreciated.
VinceHi Vince,
First thing, STOP worrying about the SAP material whether the contain is right/wrong.
Now, what I understand is that the instructor tried to explain the concepts in a easy way to remember but has that seems to have messed up your basics on up-cast & down-cast.
I have looked in my sap material ( but its 2005 SAP AG reserved ). The definition are fine.
Anyways I'll try to explain in my style:
Narrow casting( up-casting ):- Assigning of a subclass instance to a reference variable of type " reference to super class ". Here we navigate from a more detailed view to one with less details.
Widening Cast( down-cast ):- Assigning a super class to a sub class. From a less detailed view to more detailed view.
SUPER CLASS( vehicle ) less details
|
|
|
SUB CLASS ( car, truck, bus, bike ) more details
PS:- Try to understand the meaning from the example and then go back to the definition in the material. -
Dataguard concept question (data loss?)
Hi!
On the primary side I have:
- mirrored redo log files
- archiver creates a archiving file every 30 minutes for example
- archive file gets transfered to to standby system
On the standby side (physical or logical) gets updated when it receives an archive file.
Lets descuss following szenario:
What happens if my primary systems fails and the current redo file isn't archived yet? Do I have now a data loss or can I somehow recover my standby system with the mirrored redo log file of my primary system?
Thanks
MarkusIf you are using one of the less protective DataGuard protection modes, yes, it is possible to have data loss. Since DataGuard is protecting you from disasters, the assumption is that if you lose the primary database server, you've lost all the online redo logs. So in your setup, you'd have 30 minutes of data at risk. If that is unacceptable, you can certainly use a different protection mode. In the maximum protection mode, redo is applied synchronously on the standby.
Justin
Edited by: Justin Cave on Jun 18, 2009 5:20 AM
Or more succinctly: What Hament said -
Doubt in Overloading Concept in Packages
Hi,
I have two Stored Procedures are inside a package
sp_mem(mCursor REFCURSOR Datatype,MemberId INTEGER);
sp_mem(mCursor REFCURSOR Datatype, mEmailId INTEGER);
In the Above Procedures if the second Parameter is Member Id then the first SP will be executed.
In the Above Procedures if the Second Parameter is MemEmailId then the Second SP will be Executed.
This is the normal OverLoading Concept inside the package. But for me, i am returning the Recordset using a RefCursor.
I just want to know it is possible for returning the recordset using ref cursor with the overloading concept for both the SP.
Thanks,
Murali.VHello
You need to be careful with this type of overloading. Overloading is generally based around the position and data types of the parameters being supplied which are used to identify the "signature" of the particular procedure to call i.e.
sp_myproc(ref cursor, integer)
sp_myproc(ref cursor, date)
sp_myproc(ref cursor, varchar2)
sp_myproc(ref cursor, varchar2, integer)
etc etc
When you have 2 procedures that have the same signature, unless you specify the name of the parameter, there is no way to determine which procedure to call:
tylerd@DEV2> CREATE OR REPLACE PACKAGE pkg_test_overload
2 IS
3
4 PROCEDURE sp_mem(mCursor sys_refcursor,MemberId INTEGER);
5 PROCEDURE sp_mem(mCursor sys_refcursor, mEmailId INTEGER);
6
7 END;
8 /
Package created.
tylerd@DEV2>
tylerd@DEV2> CREATE OR REPLACE PACKAGE BODY pkg_test_overload
2 IS
3
4 PROCEDURE sp_mem(mCursor sys_refcursor,MemberId INTEGER)
5 IS
6
7 BEGIN
8
9 NULL;
10
11 END;
12
13 PROCEDURE sp_mem(mCursor sys_refcursor, mEmailId INTEGER)
14 IS
15
16 BEGIN
17
18 NULL;
19
20 END;
21
22 END;
23 /
Package body created.
Package body created.
tylerd@DEV2> var mycursor refcursor
tylerd@DEV2> var memberid number
tylerd@DEV2> exec pkg_test_overload.sp_mem(:mycursor,:memberid)
BEGIN pkg_test_overload.sp_mem(:mycursor,:memberid); END;
ERROR at line 1:
ORA-06550: line 1, column 7:
PLS-00307: too many declarations of 'SP_MEM' match this call
ORA-06550: line 1, column 7:
PL/SQL: Statement ignored
tylerd@DEV2> exec pkg_test_overload.sp_mem(:mycursor,MemberId=>:memberid)
PL/SQL procedure successfully completed.
tylerd@DEV2> exec pkg_test_overload.sp_mem(:mycursor,mEmailId=>:memberid)
PL/SQL procedure successfully completed.To me, using named notation with overloading kind of defeats part of the objective...I'm not saying it's completely wrong, as sometimes I guess it's unavoidable, but I'd review the design carefully :-)
HTH
David
Message was edited by:
David Tyler
Oops, copied the wrong bit of the output! :-) -
Hi i just ended up completing mail servlet from where i can send mail through a SMTP and recieve at
my POP account.Attachments too can be included/downloaded in both cases.
1>
The problem is that when i login to pop account and see the messages after it is retrieved
, i get only new messages and not the ones which have been viewed already as we do in
Outlook express.When i see them through outlook express first and then go to inbox from my servlet,those messages are not there and i get Empty.
2>Every time retrieval process starts to show same messages again.
How to handle this ?.I find illustration of codes in java-mail working in same way .If this is the limitation of Javamail as i have not
seen a single code either in demo or anywhere then i
would say it is good for nothingIt's not a limitation of Java. You need to understand the POP protocol. I don't think there's a way with POP to read a message and leave it on the server. As far as I know, once you read a message, it comes off the server. You need to manage its storage after that. The IMAP protocol allows you to read a message but leave it on the server. Read up on these protocols, and to through the [url http://java.sun.com/developer/onlineTraining/JavaMail/]JavaMail tutorial -
Doubt about the concept of HashSet and LinkedHashSet
I read one of the SCJP 6 exam book, when talking about Set, it gives one definition:
When using HashSet or LinkedHashSet, the objects you add to them must override hashCode(). If they don't override hashCode(), the default Object. hashCode() method will allow multiple objects that you might consider "meaningfully equal" to be added to your "no duplicates allowed" set.
What I am getting confused is that IF the objects we add to them must override hashCode(), we must override equals() method also! Isn't it?
Edited by: roamer on 2009?10?23? ??10:29jverd wrote:
endasil wrote:
When using HashSet or LinkedHashSet, the objects you add to them must override hashCode(). If they don't override hashCode(), the default Object. hashCode() method will allow multiple objects that you might consider "meaningfully equal" to be added to your "no duplicates allowed" set.This really is completely wrong. Duplicates being added to your set has nothing to do with not overriding hashCode, and everything to do with not overriding equals. No, if you override equals but not hashCode, you can get dupes. That is, two items that your equals method says are equal can make it into the Set.Sorry, to clarify, what I meant by that was that to avoid duplicates of meaningfully equal objects, you must override equals, and overriding hashCode is just a consequent of overriding equals (to maintain the equal objects have equal hashcodes invariant). Overriding hashCode alone will not, and cannot, prevent meaningfully equal duplicates if you don't first define meaningfully equal by overriding equals.
In summary, it's wrong because
1) You don't have to override hashCode() if you don't override equals (or rather, don't deviate from the default "two objects are equal if and only if they are the same object").
2) If you have any other definition of meaningfully equal that you want enforced in a Set, you must override equals to correspond to that definition.
3) If you override equals, you must override hashCode by the contract of hashCode and equals.
That's why I was saying that the statement was completely wrong. It's taking a backwards approach.
By not overriding equals, you're saying that no two separate instances can be meaningfully equal, so the default hashCode is fine. Yeah, I kind of figured for the statement to be meaningful, it is assumed that you have already overridden equals. Otherwise what's the point of even mentioning something two objects "meaningfully equal"?All this talk of "meaningfully equal" makes me think the opposite: that they haven't overridden equals, or haven't discussed it yet. Otherwise you could just say that the objects are equal, or are equal according to equals().
I would question the authority of the source that said that.I would quesiton the source's ability to express himself clearly. :-)Yeah, maybe that's all it is. In that case, I suggest (to the OP) reading [Effective Java, Chapter 3|http://java.sun.com/developer/Books/effectivejava/Chapter3.pdf]. Best source I've seen for beginners to make sense of all this.
Edited by: endasil on 26-Oct-2009 1:11 PM -
hi,
I am using NW 7.1 trial version. when I try to do a simple ALV prog in WebDyn .
DATA: lr_column_settings TYPE REF TO if_salv_wd_column_settings,
lr_input_field TYPE REF TO cl_salv_wd_uie_input_field.
lr_column_settings ?= l_value.
lr_column = lr_column_settings->get_column( 'PRICE' ).
when I try to execute this error is coming says, "spelling or comma error ?= is not valid" in the particular line where we enter the ?= operator...
its working in ECC6.0
kindly tell me the way...Hi,
You should ask your question in the right forum which should be *Web Dynpro Abap".
You will get better feed back.
Regards,
Olivier -
Say we have a class called Animal which has a method called shout().
we have another class called Dog which has a method callled bark().
Dog class extends Animal class.
so Dog class has 2 methods now
1)shout()
2)bark()
If we declare like this
Animal a=new Animal();//valid statement
a.shout();//valid statement
Dog d=new Dog();//valid statement
d.shout();//valid statement
d.bark();//valid statement
Animal a=new Dog();
a.shout();//valid statement
a.bark();//invalid since type of reference variable is Animal
Dog d=new Animal();
why the above decalration is not valid?
Animal object has shout() method
By inheritance Dog class has both shout() and bark() methods.
So with above type of declaration d.shout() should execute.But that is wrong.
A subclass reference variable cannt point to a subclass object.I know this kind of statement.But can any one explain why?kirn291 wrote:
Dog d=new Animal();
why the above decalration is not valid?To a Dog variable you can only assign objects which are of type Dog, and Animal isn't.
A Dog object is both of type Dog and of type Animal. This means Dog objects can be assigned to both Dog variables and Animal variables. -
Hi Guru's
1. Coluld any one tell the use of livecache in livecache server.
2.why it required only for APO sever and why won't we use it in BW server.
Thanks,
Pavanyou can get all the required info on help.sap.com just serch for livecache. and also more information available under SAP liveCache technology
-
Hi,
Oracle Version :10.2.0.1
Operating system:Windows Xp
Please help me what is the difference between these two queries.
select
substr(local.name,1,50) "Archive Name",
case when remote.sequence# is null then 'NOT TRANSMITTED'
else 'transmitted'
end,
local.sequence#,
local.thread#
from
(select * from v$archived_log where dest_id = 1) local
left join
(select * from v$archived_log where dest_id = 2) remote
on local.sequence# = remote.sequence# and
local.thread# = remote.thread#
order by local.sequence#;
Archive Name CASEWHENREMOTE. SEQUENCE# THREAD#
E:\ORACLE\PRODUCT\10.2.0\FLASH_RECOVERY_AREA\PRASA transmitted 7 1
E:\ORACLE\PRODUCT\10.2.0\FLASH_RECOVERY_AREA\PRASA transmitted 8 1
E:\ORACLE\PRODUCT\10.2.0\FLASH_RECOVERY_AREA\PRASA transmitted 9 1
E:\ORACLE\PRODUCT\10.2.0\FLASH_RECOVERY_AREA\PRASA transmitted 10 1
E:\ORACLE\PRODUCT\10.2.0\FLASH_RECOVERY_AREA\PRASA transmitted 11 1
E:\ORACLE\PRODUCT\10.2.0\FLASH_RECOVERY_AREA\PRASA transmitted 12 1
E:\ORACLE\PRODUCT\10.2.0\FLASH_RECOVERY_AREA\PRASA transmitted 13 1
E:\ORACLE\PRODUCT\10.2.0\FLASH_RECOVERY_AREA\PRASA transmitted 14 1
E:\ORACLE\PRODUCT\10.2.0\FLASH_RECOVERY_AREA\PRASA transmitted 15 1
E:\ORACLE\PRODUCT\10.2.0\FLASH_RECOVERY_AREA\PRASA transmitted 16 1
E:\ORACLE\PRODUCT\10.2.0\FLASH_RECOVERY_AREA\PRASA transmitted 17 1
Archive Name CASEWHENREMOTE. SEQUENCE# THREAD#
E:\ORACLE\PRODUCT\10.2.0\FLASH_RECOVERY_AREA\PRASA transmitted 18 1
E:\ORACLE\PRODUCT\10.2.0\FLASH_RECOVERY_AREA\PRASA transmitted 19 1
E:\ORACLE\PRODUCT\10.2.0\FLASH_RECOVERY_AREA\PRASA transmitted 20 1
E:\ORACLE\PRODUCT\10.2.0\FLASH_RECOVERY_AREA\PRASA transmitted 21 1
E:\ORACLE\PRODUCT\10.2.0\FLASH_RECOVERY_AREA\PRASA transmitted 22 1
E:\ORACLE\PRODUCT\10.2.0\FLASH_RECOVERY_AREA\PRASA transmitted 23 1
E:\ORACLE\PRODUCT\10.2.0\FLASH_RECOVERY_AREA\PRASA transmitted 24 1
E:\ORACLE\PRODUCT\10.2.0\FLASH_RECOVERY_AREA\PRASA transmitted 25 1
E:\ORACLE\PRODUCT\10.2.0\FLASH_RECOVERY_AREA\PRASA transmitted 26 1
E:\ORACLE\PRODUCT\10.2.0\FLASH_RECOVERY_AREA\PRASA transmitted 27 1
E:\ORACLE\PRODUCT\10.2.0\FLASH_RECOVERY_AREA\PRASA transmitted 28 1
Archive Name CASEWHENREMOTE. SEQUENCE# THREAD#
E:\ORACLE\PRODUCT\10.2.0\FLASH_RECOVERY_AREA\PRASA transmitted 29 1
E:\ORACLE\PRODUCT\10.2.0\FLASH_RECOVERY_AREA\PRASA transmitted 30 1
E:\ORACLE\PRODUCT\10.2.0\FLASH_RECOVERY_AREA\PRASA transmitted 31 1
E:\ORACLE\PRODUCT\10.2.0\FLASH_RECOVERY_AREA\PRASA transmitted 32 1
E:\ORACLE\PRODUCT\10.2.0\FLASH_RECOVERY_AREA\PRASA transmitted 33 1
E:\ORACLE\PRODUCT\10.2.0\FLASH_RECOVERY_AREA\PRASA transmitted 34 1
E:\ORACLE\PRODUCT\10.2.0\FLASH_RECOVERY_AREA\PRASA transmitted 35 1
E:\ORACLE\PRODUCT\10.2.0\FLASH_RECOVERY_AREA\PRASA transmitted 36 1
E:\ORACLE\PRODUCT\10.2.0\FLASH_RECOVERY_AREA\PRASA transmitted 37 1
E:\ORACLE\PRODUCT\10.2.0\FLASH_RECOVERY_AREA\PRASA transmitted 38 1
E:\ORACLE\PRODUCT\10.2.0\FLASH_RECOVERY_AREA\PRASA transmitted 39 1
Archive Name CASEWHENREMOTE. SEQUENCE# THREAD#
E:\ORACLE\PRODUCT\10.2.0\FLASH_RECOVERY_AREA\PRASA transmitted 40 1
E:\ORACLE\PRODUCT\10.2.0\FLASH_RECOVERY_AREA\PRASA transmitted 41 1
E:\ORACLE\PRODUCT\10.2.0\FLASH_RECOVERY_AREA\PRASA transmitted 42 1
E:\ORACLE\PRODUCT\10.2.0\FLASH_RECOVERY_AREA\PRASA transmitted 43 1
E:\ORACLE\PRODUCT\10.2.0\FLASH_RECOVERY_AREA\PRASA transmitted 44 1
E:\ORACLE\PRODUCT\10.2.0\FLASH_RECOVERY_AREA\PRASA transmitted 45 1
E:\ORACLE\PRODUCT\10.2.0\FLASH_RECOVERY_AREA\PRASA transmitted 46 1
E:\ORACLE\PRODUCT\10.2.0\FLASH_RECOVERY_AREA\PRASA transmitted 47 1
E:\ORACLE\PRODUCT\10.2.0\FLASH_RECOVERY_AREA\PRASA transmitted 48 1
E:\ORACLE\PRODUCT\10.2.0\FLASH_RECOVERY_AREA\PRASA transmitted 49 1
E:\ORACLE\PRODUCT\10.2.0\FLASH_RECOVERY_AREA\PRASA transmitted 50 1
Archive Name CASEWHENREMOTE. SEQUENCE# THREAD#
E:\ORACLE\PRODUCT\10.2.0\FLASH_RECOVERY_AREA\PRASA transmitted 51 1
E:\ORACLE\PRODUCT\10.2.0\FLASH_RECOVERY_AREA\PRASA transmitted 52 1
E:\ORACLE\PRODUCT\10.2.0\FLASH_RECOVERY_AREA\PRASA transmitted 53 1
E:\ORACLE\PRODUCT\10.2.0\FLASH_RECOVERY_AREA\PRASA transmitted 54 1
E:\ORACLE\PRODUCT\10.2.0\FLASH_RECOVERY_AREA\PRASA transmitted 55 1
E:\ORACLE\PRODUCT\10.2.0\FLASH_RECOVERY_AREA\PRASA transmitted 56 1
E:\ORACLE\PRODUCT\10.2.0\FLASH_RECOVERY_AREA\PRASA transmitted 57 1
E:\ORACLE\PRODUCT\10.2.0\FLASH_RECOVERY_AREA\PRASA transmitted 58 1
E:\ORACLE\PRODUCT\10.2.0\FLASH_RECOVERY_AREA\PRASA transmitted 59 1
E:\ORACLE\PRODUCT\10.2.0\FLASH_RECOVERY_AREA\PRASA transmitted 60 1
E:\ORACLE\PRODUCT\10.2.0\FLASH_RECOVERY_AREA\PRASA transmitted 61 1
Archive Name CASEWHENREMOTE. SEQUENCE# THREAD#
E:\ORACLE\PRODUCT\10.2.0\FLASH_RECOVERY_AREA\PRASA transmitted 62 1
E:\ORACLE\PRODUCT\10.2.0\FLASH_RECOVERY_AREA\PRASA transmitted 63 1
E:\ORACLE\PRODUCT\10.2.0\FLASH_RECOVERY_AREA\PRASA transmitted 64 1
E:\ORACLE\PRODUCT\10.2.0\FLASH_RECOVERY_AREA\PRASA transmitted 65 1
E:\ORACLE\PRODUCT\10.2.0\FLASH_RECOVERY_AREA\PRASA transmitted 66 1
E:\ORACLE\PRODUCT\10.2.0\FLASH_RECOVERY_AREA\PRASA transmitted 67 1
E:\ORACLE\PRODUCT\10.2.0\FLASH_RECOVERY_AREA\PRASA transmitted 68 1
E:\ORACLE\PRODUCT\10.2.0\FLASH_RECOVERY_AREA\PRASA transmitted 69 1
E:\ORACLE\PRODUCT\10.2.0\FLASH_RECOVERY_AREA\PRASA transmitted 70 1
E:\ORACLE\PRODUCT\10.2.0\FLASH_RECOVERY_AREA\PRASA transmitted 71 1
E:\ORACLE\PRODUCT\10.2.0\FLASH_RECOVERY_AREA\PRASA transmitted 72 1
Archive Name CASEWHENREMOTE. SEQUENCE# THREAD#
E:\ORACLE\PRODUCT\10.2.0\FLASH_RECOVERY_AREA\PRASA transmitted 73 1
E:\ORACLE\PRODUCT\10.2.0\FLASH_RECOVERY_AREA\PRASA transmitted 74 1
E:\ORACLE\PRODUCT\10.2.0\FLASH_RECOVERY_AREA\PRASA transmitted 75 1
E:\ORACLE\PRODUCT\10.2.0\FLASH_RECOVERY_AREA\PRASA transmitted 76 1
E:\ORACLE\PRODUCT\10.2.0\FLASH_RECOVERY_AREA\PRASA transmitted 77 1
E:\ORACLE\PRODUCT\10.2.0\FLASH_RECOVERY_AREA\PRASA transmitted 78 1
E:\ORACLE\PRODUCT\10.2.0\FLASH_RECOVERY_AREA\PRASA transmitted 79 1
E:\ORACLE\PRODUCT\10.2.0\FLASH_RECOVERY_AREA\PRASA transmitted 80 1
E:\ORACLE\PRODUCT\10.2.0\FLASH_RECOVERY_AREA\PRASA transmitted 81 1
E:\ORACLE\PRODUCT\10.2.0\FLASH_RECOVERY_AREA\PRASA transmitted 82 1
E:\ORACLE\PRODUCT\10.2.0\FLASH_RECOVERY_AREA\PRASA transmitted 83 1
Archive Name CASEWHENREMOTE. SEQUENCE# THREAD#
E:\ORACLE\PRODUCT\10.2.0\FLASH_RECOVERY_AREA\PRASA transmitted 84 1
E:\ORACLE\PRODUCT\10.2.0\FLASH_RECOVERY_AREA\PRASA transmitted 85 1
E:\ORACLE\PRODUCT\10.2.0\FLASH_RECOVERY_AREA\PRASA transmitted 86 1
E:\ORACLE\PRODUCT\10.2.0\FLASH_RECOVERY_AREA\PRASA transmitted 87 1
E:\ORACLE\PRODUCT\10.2.0\FLASH_RECOVERY_AREA\PRASA transmitted 88 1
E:\ORACLE\PRODUCT\10.2.0\FLASH_RECOVERY_AREA\PRASA transmitted 89 1
E:\ORACLE\PRODUCT\10.2.0\FLASH_RECOVERY_AREA\PRASA transmitted 90 1
E:\ORACLE\PRODUCT\10.2.0\FLASH_RECOVERY_AREA\PRASA transmitted 91 1
E:\ORACLE\PRODUCT\10.2.0\FLASH_RECOVERY_AREA\PRASA transmitted 92 1
E:\ORACLE\PRODUCT\10.2.0\FLASH_RECOVERY_AREA\PRASA transmitted 93 1
E:\ORACLE\PRODUCT\10.2.0\FLASH_RECOVERY_AREA\PRASA transmitted 94 1
Archive Name CASEWHENREMOTE. SEQUENCE# THREAD#
E:\ORACLE\PRODUCT\10.2.0\FLASH_RECOVERY_AREA\PRASA transmitted 95 1
SQL> select sequence#, applied from v$archived_log;
SEQUENCE# APP
5 NO
6 NO
7 NO
8 NO
9 NO
10 NO
11 NO
12 NO
7 NO
12 NO
13 NO
SEQUENCE# APP
10 NO
11 NO
6 NO
5 NO
9 NO
8 NO
13 YES
14 NO
14 YES
15 NO
16 NO
SEQUENCE# APP
17 NO
18 NO
15 NO
16 NO
17 NO
18 YES
19 NO
19 YES
20 YES
20 NO
21 NO
SEQUENCE# APP
22 NO
23 NO
24 NO
25 NO
25 YES
21 NO
24 NO
23 NO
22 NO
26 NO
26 YES
SEQUENCE# APP
27 YES
27 NO
28 YES
28 NO
29 NO
30 NO
31 NO
32 NO
33 NO
34 NO
35 NO
SEQUENCE# APP
36 NO
37 NO
38 NO
39 NO
40 NO
41 NO
29 NO
30 NO
31 NO
32 NO
34 NO
SEQUENCE# APP
33 NO
36 YES
35 NO
37 NO
39 NO
41 YES
38 NO
40 NO
42 NO
42 YES
43 YES
SEQUENCE# APP
43 NO
44 NO
44 YES
45 YES
45 NO
46 YES
46 NO
47 NO
48 NO
49 NO
50 NO
SEQUENCE# APP
51 NO
52 NO
53 NO
54 NO
55 NO
56 NO
57 NO
47 NO
48 NO
50 NO
51 NO
SEQUENCE# APP
49 YES
54 NO
52 NO
53 NO
55 NO
57 YES
56 NO
58 NO
58 YES
59 NO
60 NO
SEQUENCE# APP
61 NO
62 NO
63 NO
64 NO
65 NO
66 NO
59 NO
60 NO
61 NO
62 YES
63 NO
SEQUENCE# APP
66 YES
65 NO
64 NO
67 NO
67 YES
68 YES
68 NO
69 YES
69 NO
70 YES
70 NO
SEQUENCE# APP
71 NO
71 YES
72 YES
72 NO
73 NO
73 YES
74 NO
75 NO
76 NO
77 NO
78 NO
SEQUENCE# APP
79 NO
80 NO
81 NO
82 NO
83 NO
84 NO
85 NO
86 NO
87 NO
88 NO
89 NO
SEQUENCE# APP
90 NO
91 NO
92 NO
93 NO
94 NO
95 NO
74 NO
76 NO
75 NO
77 NO
78 NO
SEQUENCE# APP
79 NO
80 NO
81 NO
84 NO
85 NO
86 NO
82 YES
87 NO
89 YES
91 NO
90 NO
SEQUENCE# APP
88 NO
93 NO
94 NO
92 NO
83 YES
95 YES
182 rows selected.Thanks & Regards,
Poorna.Hi,
Here is the output for your query
SQL> select dest_id, name, sequence#, archived, applied from v$archived_log order by sequence#;
DEST_ID NAME SEQUENCE# ARC APP
84 YES NO
2 poorstand 84 YES NO
1 E:\ORACLE\PRODUCT\10.2.0\FLASH_RECOVERY_AREA\PRASAD\ARCHIVELOG\1_85_696773304.ARC 85 YES NO
2 poorstand 85 YES NO
1 E:\ORACLE\PRODUCT\10.2.0\FLASH_RECOVERY_AREA\PRASAD\ARCHIVELOG\1_86_696773304.ARC 86 YES NO
2 poorstand 86 YES NO
1 E:\ORACLE\PRODUCT\10.2.0\FLASH_RECOVERY_AREA\PRASAD\ARCHIVELOG\1_87_696773304.ARC 87 YES NO
DEST_ID NAME SEQUENCE# ARC APP
2 poorstand 87 YES NO
1 E:\ORACLE\PRODUCT\10.2.0\FLASH_RECOVERY_AREA\PRASAD\ARCHIVELOG\1_88_696773304.ARC 88 YES NO
2 poorstand 88 YES NO
1 E:\ORACLE\PRODUCT\10.2.0\FLASH_RECOVERY_AREA\PRASAD\ARCHIVELOG\1_89_696773304.ARC 89 YES NO
2 poorstand 89 YES YES
1 E:\ORACLE\PRODUCT\10.2.0\FLASH_RECOVERY_AREA\PRASAD\ARCHIVELOG\1_90_696773304.ARC 90 YES NO
2 poorstand 90 YES NO
1 E:\ORACLE\PRODUCT\10.2.0\FLASH_RECOVERY_AREA\PRASAD\ARCHIVELOG\1_91_696773304.ARC 91 YES NO
2 poorstand 91 YES NO
1 E:\ORACLE\PRODUCT\10.2.0\FLASH_RECOVERY_AREA\PRASAD\ARCHIVELOG\1_92_696773304.ARC 92 YES NO
2 poorstand 92 YES NO
DEST_ID NAME SEQUENCE# ARC APP
1 E:\ORACLE\PRODUCT\10.2.0\FLASH_RECOVERY_AREA\PRASAD\ARCHIVELOG\1_93_696773304.ARC 93 YES NO
2 poorstand 93 YES NO
1 E:\ORACLE\PRODUCT\10.2.0\FLASH_RECOVERY_AREA\PRASAD\ARCHIVELOG\1_94_696773304.ARC 94 YES NO
2 poorstand 94 YES NO
1 E:\ORACLE\PRODUCT\10.2.0\FLASH_RECOVERY_AREA\PRASAD\ARCHIVELOG\1_95_696773304.ARC 95 YES NO
2 poorstand 95 YES YES
1 E:\ORACLE\PRODUCT\10.2.0\FLASH_RECOVERY_AREA\PRASAD\ARCHIVELOG\1_96_696773304.ARC 96 YES NO
183 rows selected. -
Dear all,
Please help me regarding this i am very much confused.....
I had couple of doubts in dataguard concepts.
1)When archive log is transferred from primary to standby ,
a.Whether DBWR will be in active state or not in standby server.To write the contents in the archived redo log files which came from the primary to the datafiles of the standby server.
b.I am using online redo logs in the standby server not standby redo logs , whether online redologs in the standby server will have any effect in shipping of redologs from the primary database,
c. In my standby database online redo logs state is changing between CLEARING AND CLEARING CURRENT.How standby server redologs will change it state,
Regards,
Vamsi.Hi Vamsi,
In a case you use standby redo logs on standby;
RFS process reads redo stream and writes to standby redo logs.
ARCH process on the standby archives standby redologs into archivedlogs.
MRP process reads standby redo logs or archived log (depending on configuration) into the buffer cache. (shortly!)
DBWR writes modified blocks from buffer cache to disk.
You cannot say "I am using online redo logs in the standby server not standby redo logs" You can choose using or not using SRLs. If you don't use SRL on the standby, redo stream will be directly written to archived logs. Online redologs are out of this scope.
Online redo logs are not used in a physical standby database. They exist in order to be used in a case of opening the standby database read-write (failover/snapshot standby). Here what documentation says:
Online redo logs
Every instance of an Oracle primary database and logical standby database has an associated online redo log to protect the database in case of an instance failure. Physical standby databases do not have an associated online redo log, because physical standby databases are never opened for read/write I/O; changes are not made to the database and redo data is not generated.
+...+
Create an Online Redo Log on the Standby Database
Although this step is optional, Oracle recommends that an online redo log be created when a standby database is created. By following this best practice, a standby database will be ready to quickly transition to the primary database role.
+...+
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