REDO Log Member Multiplex
Jun 13, 2012I wanna know if the redo log members are mirror copies.All member files from a same redo group have the same data?Are there any different in mirror or multiplex a file?
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How To Use Member Procedures
Dec 13, 2009create type employee is object(
name varchar2(30),
member procedure change_name(new_name varchar2)
)
[Code]....
Now how to use the change_name procedure to change the name of the employees in the table?
How To Get Youngest And Oldest Member In The Table
Sep 3, 2008select
a.first_name,
a.agent_id,
a.birth_date
from
agents a
[code]........
from the above i cannot get the youngest one! this is giving me some mid age.
Page 2 - Get Youngest And Oldest Member In Table?
Sep 5, 2008Do u want to get the youngest & oldest member at each location?
View 1 Replies View RelatedHow Newly Added Log Member Get Sync With Existing One
Jun 29, 2011If one of the redolog member corrupted and overcome this problem, I had removed the corrupted redolog member. Later I had added a new member to this group.
I would like to know, is the newly added log member will get sync with existing log member? How the newly added log member get sync with existing log member?
SQL & PL/SQL :: Member Procedure Insert With Subtype Info?
Mar 2, 2012Im trying to generate a member procedure that allows the user to manual enter the required information via substitution variables. The manual INSERT INTO statements work but I cant seem to get it to work within a procedure.
Here is the code for the type, table andstandard insert:
CREATE TYPE toy_typ AS OBJECT
(toy_id NUMBER ( 5),
toy_name VARCHAR2 (20),
toy_cost NUMBER ( 4),
[code]...
the procedure complies but i get a warning error. When i also try to execute the code with either set values or substitutions i get either not enough or to many values error.
PL/SQL :: Break Down Each Member Range By Record Per Month?
Mar 28, 2013have a req like below
CREATE TABLE TEST_BRK
( EMP_ID VARCHAR2(20),
BEG_DT DATE,
END_DT DATE,
DEPT_CODE VARCHAR2(10),
[code]...
COMMIT;i need to break down the each member range by record per month and make a record as first day of that month . and dept and branch should have the same value as what the value it was in the range of source.
excepted ouput like below
EMP_ID MONTH_DAY_1 DEP_CODE BRANCH
AAAA 01-JAN-2010 02 A
AAAA 01-FEB-2010 02 A
AAAA 01-MAR-2010 02 A
AAAA 01-APR-2010 02 A
AAAA 01-MAY-2010 02 A
AAAA 01-JUN-2010 05 B
AAAA 01-JUL-2010 05 B
.how can i code the logic to get my expected output above
Server Administration :: Increasing Size Of Redolog Member
Feb 27, 2008The size of redolog member is 12m . Can I increase the size of that member dynamically, without adding a new member to that group and dropping the old one.
View 8 Replies View RelatedSQL & PL/SQL :: Access Attributes Of Objects Of Nested Table In Member Function Of Oracle Database
Nov 17, 2011I have created two types and a list of the first type:
create type type1;
/
create type type1_list as table of ref type1;
/
create type type2;
/
I have now just created the two types as follows:
create type type1 as object(
id# number
);
/
create type type2 as object(
attribute1 type1_list,
MEMBER FUNCTION function1 RETURN NUMBER
);
/
Ok, I've created the tables (I don't know if it's necessary to point out my problem)
CREATE TABLE type1_table OF type1;
/
CREATE TABLE type2_table OF type2
NESTED TABLE attribute1 STORE AS nested_type1_list_table;
/
And what I wanted to do now is to implement the member function1 and check something of the attributes of type1 in the list of attribute1... And that's where my question occurs, how does it work, I can't figure it out. I tried something like this:
Quote:
create or replace
TYPE BODY type2 AS
MEMBER FUNCTION function1 RETURN NUMBER AS
[Code]....
But I don't get the right way, it doesn't work
PL/SQL :: Create View Which Is Aggregate Count Of Member Records / Grouped By Business_unit / Gender / Age Per Year
Oct 13, 2012Using Oracle 11g...We have a table in our database of data with the following information:
MASTER_RECORD,
MEMBER_RECORD,
BUSINESS_UNIT,
GENDER,
DOB (date),
age [at time of month_record],
MONTH_RECORD (date) [31-MON-YEAR for recorded active month]
The table has ~55 million records. Existing index is only on MASTER_RECORD.There is now a need to create a view which is an aggregate count of member records, grouped by business_unit,gender, age per year. eg:
business_unit, gender, age, month_record, num_of_members -> for every combination
unit5, F, 25, 31-JUN-2011, 622
unit3, M, 18, 31-MAY-2011, 573
The view can be created now, but, is not fast enough to be reasonably considered a view. This table is re-created every month from a procedure, so there is flexibility on how it is created. Use interval partitioning by year( something I have not experienced using), create an index on the month_record,then create view.
Adding ASM Disk With Header Status MEMBER To Existing Disk Group
Aug 26, 2010We have a Production Oracle 10g R2 RAC on HP-UX v2 IA64 servers.We have Two Disk Groups one for Archive (ARC_DISK - 100 GB) and other for Database(DATA_DISK - 1 TB]. We wanted to add more space to the DATA_DISK disk group.Unix admin configured 200 GB from SAN and changed the ownership of the Disk to oracle and permissions to 775 on 1st Node.I opended DBCA from 1st Node and was able to see the disk in 'Show Candidate'.
I added this disk to the DATA_DISK disk group and clicked OK but got ORA- error with some message like some operations could not be performed. I exited DBCA.We realized that we had forgotten to change the ownerhip and permission from the 2nd Node.Unix admin changed the ownership of the Disk to oracle and permissions to 775 on the 2nd Node.
I opened DBCA again from 1st Node and selected the DATA_DISK disk group but could not find the Disk in 'Show Candiate' open. I clicked on 'Show All' and this disk was shown with Header_Status - MEMBER but not allocated to DATA_DISKGROUP. When I clicked the 'Show Member' option, this disk is not shown for DATA_DISK disk group. I exited DBCA at this point.As this is a critcal Production database I didnt proceed any further and exited DBCA.
Now I need to add this Disk to the DATA_DISK disk group but not sure which option to select. I got one reply from another forum to run DBCA select the DATA_DISK Disk Group and then click 'Show All' and select this Disk (which already has MEMBER as Header Status) and select Force Option and click OK to continue.
What Exactly Redo Log File Contains
Oct 1, 2011what exactly redo log file contains.? whether they contained the ddl or dml statements or more than that.........?
View 1 Replies View RelatedRedo Log Sizing
Dec 28, 2012I look after a database that contains GIS mapping data. We do not use Oracle Spatial - it's just a plain Oracle Standard DB. It is running in Noarchivelog mode (I know - it's not a good idea, but will be sorted when our new Sun T4-1 arrives).
There are only a couple of users who actually edit data in the database, but about 100 simultaneous users who access it. In day to day use we have no performance issues. The DB has 3 50Mb redo log groups, and these switch about every hour or so during normal use.
Every few weeks we do a bulk update of our underlying map data. This involves putting about 4Gb of data into the database (which is about 15Gb in total). This takes about 5 hours and whilst I'm sure our old Sun v240 server lacking power is a substantial cause, I think the lack of redo space makes matters worse. Last time we did this, the system clocked just over 200 redo log switches in 5 hours. There were lots of "Checkpoint Incomplete" messages in the log file too.
The software we use to load the map data doesn't allow the data to be loaded with a nologging switch.
I could resize the redo logs, but if I size them for the update workload - 3x 500Mb - we'll have some days where we don't get a redo log switch at all. Is this necessarily a problem?
The alternative I'm thinking of is prior to performing this update, we add an extra redo log group with a 1Gb file, run the update, then remove the redo log group and delete the file afterwards. Is there anything wrong with this approach?
Get Redo-log Group Sizing?
Aug 22, 2012What is the optimal redo log size for the database and how many log files required if desired to enable archive log mode.what can be the value for fast_start_mttr_target..?i think if it this parameter set we can have redo log advisor for optimal redolog size.we have 2 redolog groups with 2 members each size of 1 GB. Will it degrade db performance..?
Database version 11.1.0.7
Oracle apps R12
OS : Linux Redhat 5.5
How To Calculate Redo Rate
Nov 14, 2006how would I be able to calculate the Redo rate for using in the Required bandwidth Formula as seen below :
Required bandwidth Formula ((Redo rate in bytes per second / 0.7) * 8) / 1,000,000 = bandwidth in Mbps
Example: 385 KB/sec peak rate would require an available network bandwidth of at least
((394253 / 0.7) * 8) / 1,000,000 = 4.5 Mbps.
SOURCE OF FORMULA Network Bandwidth Implications of Oracle Data Guard...I'm using Oracle 10g
Advantages Of Redo Log Threads
Sep 16, 2010tell me the advantages of using more than one redo log thread? Currently i am setup with 3 logfile groups and 3 members in each group.Ie
logfile group 1 ('/u01/oradata/pri/redo01a.dbf',
'/u02/oradata/pri/redo01b.dbf',
'/u03/oradata/pri/redo01c.dbf') size 30M,
group 2 ('/u01/oradata/pri/redo02a.dbf',
'/u02/oradata/pri/redo02b.dbf',
'/u03/oradata/pri/redo02c.dbf' ) size 30M,
group 3 ('/u01/oradata/pri/redo03a.dbf',
'/u02/oradata/pri/redo03b.dbf',
'/u03/oradata/pri/redo03c.dbf' ) size 30M
Redo Log Group Resize
Mar 20, 2012I want to re-size redo log group on my production database .i have 10 redo log groups of 50mb each having 2 members.i want 4 redo groups to be of 250 mb each having 2 members and then i will drop that old 10 redo log group(50 mb ) , so that i will have only 4 redo log group of 250MB each having 2 members.But i have physical standby and logical standby configured on production database .
find attached file for redo log configuration of production database(CBSPROD),Logical standby database(CBSMIS), Physical standby database(CBSDR).
Resizing Redo Logs
Aug 8, 2012I'm using Oracle 10gR2 (10.2.0.4.0) 64 bits.
I got many times oracle ORA-00494 error and the database went down but since 29th of july the database have not been killed.
The error message is below :
ORA-00494: mise en file d'attente [CF] d�tenue pendant trop longtemps ( (more than 900 seconds)) par inst 1, osid 176484
ORA-00028: votre session a �t� ferm�e
My database is used for datawarehouse of many terabytes.
Initially the redo log size was 500Mbytes and I've set it to 3Gbytes. The maximum log switch is after 5 minutes. I want log to be switched every 20 minutes or every 30 minutes.
To obtain the size of redo logs I've executed this query :
SQL> select OPTIMAL_LOGFILE_SIZE from v$instance_recovery;
OPTIMAL_LOGFILE_SIZE
--------------------
54763
53,5 Gbytes is it not very big as redo log size? What's the maximum size of redo log? To set very big redo log size what are the requirements? Which precautions should I take before? What are the risks? Are any other ways to change the log switch frequency?
Performance Tuning :: No Redo For DML?
Mar 17, 2006How can I disable redo generation for DML statements.
View 25 Replies View RelatedRedo Generated In Last 2 Hour
Feb 7, 2013Is there any way to get the amount of redo generated in last 2 hour. which has below chareteistic
1. redo generated by currently connected session from last 2 hour.
2. redo generated by session disconnected during last 2 hour.
total_redo = disconnected sessoin during last 2 hour + connected session generating redo during last 2 hour.
Redo Logs Size
May 28, 2013is it Any way I can put the size of my redo log (During Install Oracle DB 11.1.0.7 )
I mean during installtion .??? becouse its by default 50 MB I need to be 200MB
Redo Multiplexing And Archiving
Aug 21, 2012Database version
SQL> select * from v$version;
BANNER
--------------------------------------------------------------------------------
Oracle Database 11g Enterprise Edition Release 11.1.0.7.0 - 64bit Production
PL/SQL Release 11.1.0.7.0 - Production
CORE 11.1.0.7.0 Production
TNS for Linux: Version 11.1.0.7.0 - Production
NLSRTL Version 11.1.0.7.0 - Productionredo logs multiplexed.
[code]....
+ when the redolog 5 was archived how the archiving process works ?
let say both the log members are clean in case which one will be archived 5a or 5b ?
+ I can also see only one archive log is creating during log swtich
Redo Log Information - Arch Vs LGWR?
Oct 25, 2012Redo log information can be transmitted in one of two ways from the primary database to the standby database: either by ARCH or LGWR.
1. when ARCH involves
2. when LGWR involves
FAL_Client = (Should i enter net service name or Db name or service_name
FAL_Server = Should i enter net service name or Db name or service_name )
FAL_CLIENT='whichone'
[code]...
Unable To Find Redo Log Files Specified?
Jul 15, 2011I am creating database instance from template. I have specified the location of redo log files. When I run the dbca utility it does creates the redo log files in specified directory. But the installation fails . When I checked the trace file. it says unable to locate the specified file(redo.log). But when i check in directory they are created.
I am using windows 32 bit oracle 11g
DataGuard - Standby Redo Log Files
Sep 3, 2012What is the purpose of Standby Redo Log Files in Data Guard configuration? When it is utilized by the database?
View 4 Replies View RelatedAdd Changed Rows To Redo Log Files
Aug 29, 2012I learned that Oracle uses supplemental logging mechanısm to add the changed rows to redo log files and identify the changed rows on target replication database? Is that mechanism mandatory to handle the replication of data between updated and back up databases?
View 1 Replies View RelatedBackup & Recovery :: Redo Log Volume
May 22, 2011I was asked by my systems administrator if I could tell him how much redo log volume, on average, do I figure we generate in a day?
Just wondering how I might calculate this?
We have several production databases. If I wanted to calculate the above for one of them, would it be take all the redo logs for a day and total up the size in bytes? Maybe take a 5 day work week and take the average over the 5 days?
SQL & PL/SQL :: Redo Log Generated In Materialized View
Dec 17, 2012As we know that, MV is generating more redo logs during the FAST refresh. but i need more clarifications on that.
see the below examples:
exec dbms_mview.REFRESH ( LIST => 'mv_test', method=>'F');
PL/SQL procedure successfully completed.
select a.name, b.value
from v$statname a, v$mystat b
where a.statistic# = b.statistic#
and a.name = 'redo size';
NAME VALUE
---------------------------------------------------------------- ----------
redo size 147144
see the redo size is 147144 bytes. Immediately, i refreshed in MV view. now there is no update or insert or delete stats happened in source tables. but i do see redo log generation is high for NO DATA refresh.
select a.name, b.value-147144
from v$statname a, v$mystat b
where a.statistic# = b.statistic#
and a.name = 'redo size';
NAME VALUE
---------------------------------------------------------------- ----------
redo size 42352
For no rows refresh, it takes 42352 bytes.. why oracle generated redo logs when there is no DML operations happened in source table.
Dirty Versus Redo Buffer?
Mar 3, 2010What's the difference between a dirty buffer and a redo buffer?
My understanding is that a dirty buffer is a changed buffer or whenever data changes in the buffer cache, it's marked as dirty. Also, a redo buffer keeps track of changes that were made to the data, so it's also referring to changed data as well...DWBn writes dirty buffers to disk and LGWR writes redo data to redo log filesHow can we differentiate between the two?
Performance Tuning :: Redo Size?
Jun 18, 2012In one of our envirnoment i could see the redo size is high.Trying to understand why this is more
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