Level of protection in Data Guard

Similar Questions

• Protection Mode change Data Guard.

  Experts,
  
  Ask your entries on the Data Guard protection mode change, below, is our environment:
  
  BECAUSE with two nodes: primary
  Single stand-alone Server DB: Eve
  Apply real-time: enabled
  
  For the primary and Standby databases, it's protection guard data display "Maximum Performance" mode. According to our needs, we would go for "maximum availability". I can go ahead and change, however I have questions in mind before making the change.
  
  1. do I need to change the protection on both primary & standby mode?
  2. do on DB primary change automatically the standby mode too?
  3. If the answer is NO to the 2nd question, I need to change the mode of protection to standby also? In the otherwise, primary and Standby will be run in two different modes.
  
  Please let us know of your entries.
  
  Thank you

  Crazy.

  I'm really happy that it works. Only ORA-16198 has very little information about it.

  And its raining in the North tonight so I have to escape before it turns me on.

  Best regards

  mseberg

  Subsequently

  Is equivalent to checking. Hoping no news is good news.

  I've seen this thing before restarting. Last weekend was indeed an Oracle 10 bark at me during the installation of the entire network has been good. Another error, but I finally tried the same thing and it worked also. No complete sense to me, you would think that the listener would govern. And then it takes the real is what's real.

  MS

  Published by: mseberg on December 14, 2011 18:47

• Type of protection for Acrive Data Guard

  Hi all
  
  I'm looking to implement a solution of active data guard 11 G R2 and must be live reporting of the database physical sleep.
  
  I need to confirm the mode of protection I need. (I think it's maximum Protection).
  
  Thank you very much
  
  VICC

  NOT CORRECT (see below in the thread)
  11 g, you can use real-time Query (DataGuard Active) with a MAXIMUM PERFORMANCE and a MAXIMUM AVAILABILITY

  Kind regards
  Uwe Hesse

  http://uhesse.WordPress.com

  Published by: Uwe Hesse on 27.01.2011 12:55

• Data Guard environment, how time will need to use standby Database

  Dear experts,

  OS - Windows server 2012

  Oracle Version - 11.2.0.1.0

  The size of the database - 500 GB

  I have the plan to implement Data Guard. The database size is 500 GB.

  Please find below the question

  (1) when the database is harnessed for how long take use waiting for database so immediately or a few minutes?

  (2) when the server went down how long then to connect with the server backup immediately or a few minutes?

  I'm new to the data protection environment. Kindly help me

  Hello;

  I can perform a failover or a failover with Data Guard Broker in about 20 seconds. If I don't use a broker, it takes about 3 minutes.

  Quick start failover takes less time. Time will depend on the material, etc. of configuration options.

  Best regards

  mseberg

• Data Guard - allocation of licenses and other fundamental questions before setting it up.

  Hi all

  Please allow me to submit some questions about Oracle Data Guard.

  There are 2 databases 'authorized and ready ':

  -a single instance of the "alfa", Oracle Enterprise Edition 10.2 database,

  -"bravo", Oracle 10.2 Enterprise Edition, Real Application Clusters database

  I have to "align" congratulations to alfa on a daily basis, so that--in case of failure of the main 'alfa' site - recovery is possible change to the site "bravo."

  (1) even if we can afford a loss of data corresponding to the period little uttered at the end of the last daily alignment (no need to 'transactional' alignment between the two databases), I assume that the best approach to meet this need in terms of efficiency and manageability consists on two databases including in a Data Guard configuration.

  Am I wrong?

  (2) in particular, the physical implementation of the standby database must be preferred over logic, because that "simpler and faster" in this case. Am I wrong?

  (3) only the Data Guard configuration require

  (a) additional licenses?

  (b) additional material/software resources for host machines?

  (5) the release of two databases must be equal to the specific to the component version number (10.2.0.1, for example)? Or, for example, is a 10.2.0.1 able to work with a 10.2.0.3 db db in the Data Guard configuration?

  Thank you very much in advance!

  Marco mazzocchi

  Hello

  (1) even if we can afford a loss of data corresponding to the period little uttered at the end of the last daily alignment (no need to 'transactional' alignment between the two databases), I assume that the best approach to meet this need in terms of efficiency and manageability consists on two databases including in a Data Guard configuration.

  Am I wrong?

  You have reason, physical hosting it good thing. For the most part, you will get impact with until or unless data loss because of some problems of network (or a configuration problem)

  (2) in particular, the physical implementation of the standby database must be preferred over logic, because that "simpler and faster" in this case. Am I wrong?

  Logical standby is a little different from the physical standby mode

  (3) only the Data Guard configuration require

  (a) additional licenses?

  (b) additional material/software resources for host machines?

  Data features come with Enterprise Edition - perhaps for the active database "cost of the additional license.

  https://docs.Oracle.com/CD/E11882_01/license.112/e47877/editions.htm#DBLIC109

  (5) the release of two databases must be equal to the specific to the component version number (10.2.0.1, for example)? Or, for example, is a 10.2.0.1 able to work with a 10.2.0.3 db db in the Data Guard configuration?

  Good level to maintain the same level of oracle binaries / patches and still the support of heterogeneous DG

  -Pavan Kumar N

• Data Guard and auditor of the Apex

  Hi all

  I seem to be unable to understand the configuration of parameters for protective Apex listener when connecting to a database.

  We have a lot of servers of databases (without data guard) and we use the command line Wizard to generate the configuration file. It's straigthforeward and
  easy. We enter the server, port, and Service_name and it works.

  But for a guard database, there are two servers and I seem to be unable to set it in the right way. After doing some research I came across the parameter apex.db.customURL which should solve the problem.

  I removed the references to the server, port, and Service_name and put the key in.

  The result were errors of connection due to some incorrect port settings.

  SEVERE: The pool named: apex is not properly configured, error: IO error: format invalid number for the port number

  oracle.dbtools.common.jdbc.ConnectionPoolException: the pool named: apex is not properly configured, error: IO error: format invalid number for the port number

  at oracle.dbtools.common.jdbc.ConnectionPoolException.badConfiguration(ConnectionPoolException.java:65)

  What Miss me?

  Thank you
  Michael

  (Here's the rest of our configuration :)

  <? XML version = "1.0" encoding = "UTF-8" standalone = 'no '? >

  < ! DOCTYPE SYSTEM property "http://java.sun.com/dtd/properties.dtd" > ""

  Properties of <>

  < comment > saved on Mon Oct 19 18:28:41 CEST 2015 < / comment >

  < key "debug.printDebugToScreen entry" = > false < / entry >

  < key "security.disableDefaultExclusionList entry" = > false < / entry >

  < key = "db.password entry" > @055EA3CC68C35F70CF34A203A8EE1A55D411997069F6AE9053B3D1F0B951D84E0E < / entry >

  < key = "enter cache.maxEntries" > 500 < / entry >

  < key = "enter error.maxEntries" > 50 < / entry >

  < key = "enter security.maxEntries" > 2000 < / entry >

  < key = "cache.directory entry" > / tmp/apex/cache < / entry >

  < enter key = "jdbc. DriverType"> thin < / entry >

  < key = "enter log.maxEntries" > 50 < / entry >

  < enter key = "jdbc. MaxConnectionReuseCount"> 1000 < / entry >

  < key "log.logging entry" = > false < / entry >

  < enter key = "jdbc. InitialLimit' > 3 < / entry >

  < enter key = "jdbc. MaxLimit' 10 > < / entry >

  < key = "enter cache.monitorInterval" 60 > < / entry >

  < key = "enter cache.expiration" > 7 < / entry >

  < key = "enter jdbc.statementTimeout" > 900 < / entry >

  < enter key = "jdbc. MaxStatementsLimit' 10 > < / entry >

  < key = "misc.defaultPage entry" > apex < / entry >

  < key = "misc.compress" / entry >

  < enter key = "jdbc. MinLimit"> 1 < / entry >

  < key = "cache.type entry" > lru < / entry >

  < key "cache.caching entry" = > false < / entry >

  < key "error.keepErrorMessages entry" = > true < / entry >

  < key = "cache.procedureNameList" / entry >

  < key = "cache.duration entry" > days < / entry >

  < enter key = "jdbc. InactivityTimeout"1800 > < / entry >

  < key "debug.debugger entry" = > false < / entry >

  < key = "enter db.customURL" > JDBC: thin: @(DESCRIPTION = (ADDRESS_LIST = (ADRESSE = (COMMUNAUTÉ = tcp.world) (PROTOCOL = TCP) (host = DB-ENDUR) (Port = 1520)) (ADDRESS = (COMMUNITY = tcp.world)(PROTOCOL=TCP) (Host = DB-ENDURK) (PORT = 1521)) (LOAD_BALANCE = off)(FAILOVER=on)) (CONNECT_DATA = (SERVICE_NAME = ENDUR_PROD.) VERBUND.CO. «"" AT))) < / entry >»»»

  < / properties >

  
  
  

  Hi Michael Weinberger,

  Michael Weinberger wrote:

  I seem to be unable to understand the configuration of parameters for protective Apex listener when connecting to a database.

  We have a lot of servers of databases (without data guard) and we use the command line Wizard to generate the configuration file. It's straigthforeward and
  easy. We enter the server, port, and Service_name and it works.

  But for a guard database, there are two servers and I seem to be unable to set it in the right way. After doing some research I came across the parameter apex.db.customURL which should solve the problem.

  I removed the references to the server, port, and Service_name and put the key in.

  Keep the references the server name, port and service. No need to delete.

  The result were errors of connection due to some incorrect port settings.

  SEVERE: The pool named: apex is not properly configured, error: IO error: format invalid number for the port number

  oracle.dbtools.common.jdbc.ConnectionPoolException: the pool named: apex is not properly configured, error: IO error: format invalid number for the port number

  at oracle.dbtools.common.jdbc.ConnectionPoolException.badConfiguration(ConnectionPoolException.java:65)

  What Miss me?

  You must create two entries in the configuration file "defaults.xml" for your ADR (formerly APEX Listener).

  One for db.connectionType and, secondly, for db.customURL, for example:

  customurl
  jdbc:oracle:thin:@(DESCRIPTION=(ADDRESS_LIST=
  (ADDRESS=(COMMUNITY=tcp.world)(PROTOCOL=TCP)(HOST=DB-ENDUR)(Port = 1520))
  (ADDRESS=(COMMUNITY=tcp.world)(PROTOCOL=TCP)(HOST=DB-ENDURK)(PORT = 1521))
  (LOAD_BALANCE=off)(FAILOVER=on))(CONNECT_DATA=(SERVICE_NAME=ENDUR_PROD.VERBUND.CO.AT)))
  

  Reference: http://docs.oracle.com/cd/E56351_01/doc.30/e56293/config_file.htm#AELIG7204

  NOTE: After you change the configuration file, don't forget to restart independent ADR / Java EE application server support if ADR is deployed on one.

  Also check if your URL for a JDBC connection is working properly and if there are any questions, you can turn on debugging for ADR:

  Reference:

  • http://docs.Oracle.com/CD/E56351_01/doc.30/e56293/trouble.htm#AELIG7206
  • http://docs.Oracle.com/CD/E56351_01/doc.30/e56293/trouble.htm#AELIG7207

  Directed by Tony, you should post the ADR related questions to the appropriate forum. Reference: ADR, SODA & JSON in the database

  You can also move this thread on the forum of the ADR.

  Kind regards

  Kiran

• Active data guard lost synchronization

  Hi guys,.

  I hope you can give me some advice.

  I have a BD PRIMARY in a server and a STANDBY in another server.

  I do not configure these databases and I don't have too much experience with data protection.

  The problem is that the STAND BY lost the sincronization. I just watched a few views on the database and I found that the media database is READ only, so I think that is an Active Data Guard.

  -PRIMARY:

  SQL > SELECT name, State, database_role, open_mode connections, log_mode FROM v$ instance, v$ database;

  STATUS DATABASE_ROLE LOG_MODE CONNECTIONS

  --------- ---------------- -------------------- ------------

  BD PRIMARY READ WRITE ARCHIVELOG

  -STANDBY TIME:

  SQL > SELECT name, State, database_role, open_mode connections, log_mode FROM v$ instance, v$ database;

  STATUS DATABASE_ROLE LOG_MODE CONNECTIONS

  --------- ---------------- -------------------- ------------

  PHYSICAL STANDBY BD READ ONLY WITH APPLY ARCHIVELOG

  
  

  -PRIMARY:

  "SQL > select SEQUENCE #, FIRST_TIME NEXT_TIME, APPLIED, ARCHIVES of V$ ARCHIVED_LOG, whose name = ' STANDBY' FIRST_TIME agenda;

  
  

  SEQUENCE # FIRST_TI ARC APPLIED NEXT_TIM

  ---------- -------- -------- --------- ---

  56 18/03/15-18/03/15 NO YES

  57 18/03/15-18/03/15 NO YES

  58 18/03/15-18/03/15 NO YES

  59 18/03/15 03/19/15 NO YES

  60 19/03/15 03/19/15 NO YES

  61 19/03/15 03/20/15 NO YES

  ...

  426 13/05/15 13/05/15 NO YES

  427 13/05/15 13/05/15 NO YES

  428 13/05/15 13/05/15 NO YES

  429 13/05/15 05/14/15 NO YES

  430 14/05/15 05/15/15 NO YES

  I saw the newspaper archive all copy them correctly on the standby server, but they apply. I don't know why.

  How can I get the two database will be synchronized? What option I have?

  Best regards...

  Hello, you should check if Fal_server and Fal_client settings are configured in the main bodies and relief.

  In the standby instance fal_server must point to name PRIMARY, as it appears in tnsnames.ora

  fal_client must point in standby mode, as it appears in tnsnames.ora

  In the first instance, fal_server must point to the name of Eve, as it appears in tnsnames.ora, fal_client pointing to primary name, as it appears in tnsnames.ora

  on the other hand, you must restore the automatic sequence 33-55 on the backend and fal then transport and then primary eve because of the resolution of the gap.

  http://docs.Oracle.com/CD/B19306_01/server.102/b14239/log_transport.htm#i1268281

• Oracle will always create a Data Guard certification?

  Oracle will always create a data protection Certification?

  If so it would be more than a "HA" - high availability.

  or would it only be on Active Data Guard.

  Thank you

  We have a Data Guard Admin certification soon. Unfortunately, I have not closer than that date.

  https://blogs.Oracle.com/certification/entry/0856_31

  Kind regards
  Brandye Barrington

  The Forum Moderator

• Purge logs archiving on things primary and Standby and for Data Guard RMAN

  
  Hi, I saw a couple of orders in regard to the purge archive records in a Data Guard configuration.

  Set UP the STRATEGY of SUPPRESSION of ARCHIVE to SHIPPED to All RELIEF;

  Set UP the STRATEGY of ARCHIVELOG DELETION to APPLIED on All RELIEF;

  Q1. The above only removes logs archiving to the primary or primary and Standby?

  Q2. If deletions above archive logs on the primary, is it really remove them (immediately) or does the FRA to delete if space is needed?

  I also saw

  CONFIGURE ARCHIVELOG DELETION POLICY TO SAVED;

  Q3. That what precedes, and once again it is something that you re primary side?

  I saw the following advice in the manual of Concepts of data protection & Admin

  Configure the DB_UNIQUE_NAME in RMAN for each database (primary and Standby) so RMAN can connect remotely to him

  Q4. Why would I want my primary ro connect to the RMAN Repository (I use the local control file) of the standby? (is this for me to say define RMAN configuration settings in the Standby) manual

  Q5. Should I only work with the RMAN Repository on the primary or should I be also in things in the deposits of RMAN (i.e. control files) of the standby?

  Q6. If I am (usually mounted but not open) Physics, of standby I able to connect to its own local repository for RMAN (i.e. control based on files) while sleep mode is just mounted?

  Q7. Similiarly if I have an old lofgical (i.e. effectively read-only), to even connect to the local RMAN Repository of Eve?

  Q8. What is the most common way to schedule a RMAN backup to such an environment? example cron, planner of the OEM, DBMS_SCHEDULER? MY instinct is cron script as Planner OEM requires running the OEM service and DBMS_SCHEDULER requires the data runs?

  Any idea greatly appreciated,

  Jim

  The above only removes logs archiving to the primary or primary and Standby?

  When CONFIGURE you a deletion policy, the configuration applies to all destinations archive

  including the flash recovery area. BACKUP - ENTRY DELETE and DELETE - ARCHIVELOG obey this configuration, like the flash recovery area.

  You can also CONFIGURE an archived redo log political suppression that newspapers are eligible for deletion only after being applied to or transferred to database backup destinations.

  If deletions above archive logs on the primary, is it really remove them (immediately) or does the FRA to delete if space is needed?

  Its a configuration, it will not erase by itself.

  If you want to use FRA for the automatic removal of the archivelogs on a database of physical before you do this:

  1. make sure that DB_RECOVERY_FILE_DEST is set to FRA - view parameter DB_RECOVERY_FILE_DEST - and - setting DB_RECOVERY_FILE_DEST_SIZE

  2. do you have political RMAN primary and Standby set - CONFIGURE ARCHIVELOG DELETION POLICY to APPLY ON ALL STANDBY;

  If you want to keep archives more you can control how long keep logs by adjusting the size of the FRA

  Great example:

  http://emrebaransel.blogspot.com/2009/03/delete-applied-archivelogs-on-standby.html

  All Oracle is worth a peek here:

  http://emrebaransel.blogspot.com/

  That what precedes, and once again it is something that you re primary side?

  I would never use it. I always had it put it this way:

  CONFIGURE ARCHIVELOG DELETION POLICY TO APPLIED ON ALL STANDBY;

  I would use only 'BACKED UP' for the data protection system. Usually it tell oracle how many times to back up before removing.

  Why would I want my primary ro connect to the RMAN Repository?

  Because if you break down, you want to be able to backup there, too.

  Also if it remains idle for awhile you want.

  Should I only work with the RMAN Repository on the primary or should I be also in things in the deposits of RMAN (i.e. control files) of the standby?

  Always use a database of catalog RMAN with Data Guard.

  If I am (usually mounted but not open) Physics, of standby I able to connect to its own local repository for RMAN (i.e. control based on files) while sleep mode is just mounted?

  Same answer as 5, use a catalog database.

  Similiarly if I have an old lofgical (i.e. effectively read-only), to even connect to the local RMAN Repository of Eve?

  Same answer as 5, use a catalog database.

  What is the most common way to schedule a RMAN backup to such an environment? example cron, planner of the OEM, DBMS_SCHEDULER? MY instinct is cron script as Planner OEM requires running the OEM service and DBMS_SCHEDULER requires the data runs?

  I think cron is still, but they all work. I like cron because the database has a problem at work always reports its results.

  Best regards

  mseberg

  Summary

  Always use a database with RMAN catalog.

  Always use CRF with RMAN.

  Always set the deletion «To APPLY ON ALL STANDBY» policy

  DB_RECOVERY_FILE_DEST_SIZE determines how long to keep the archives with this configuration.

  Post edited by: mseberg

• Data Guard Vs Golden Gate

  Hello
  
  I have custody-transfer data disaster and now my planning to do more to implement the Golden Gate. My question is when you can protect your data and active pressure on the primary database using the Data Guard why someone should go to golden gate?
  
  Please let us know of your experience of Golden Gate on Data guard!
  
  One more thing, what is meant when someone using eve of terms and dataguard, dataguard active? Are not all the same?

  I have data-guard for disaster recovery and now my management planning to do more like implement Golden gate. My question is when you can protect your data and offload pressure on primary database by maintaining active data-guard why someone need to go for golden gate?? 
  
  Please share your experience for using Golden Gate over Data guard!!
  

  Refer to this http://www.oracle.com/technetwork/database/features/availability/dataguardgoldengate-096557.html
  Can be useful

  One more thing, what is meant when someone using eve of terms and dataguard, dataguard active? Are not all the same?

  Active Dataguard is a device in which the database pending would be placed in open read-only mode and recovery (MRP/application log) would be ongoing. This is called as active dataguard and the wait would be in sync with the primary. The standby database when kept in open read-only mode can be used for purposes execute select queries. So, you would be having a function of the use of the database as a database, and at the same time the day before would apply the primary newspapers. This feature is available only from 11 g.

  In 10g or earlier versions, we had no such device. The database of rescue, if necessary use for reporting purposes, then the backup database must be open in read-only mode, but the recovery (MRP/application log) cannot be done. So, if you want that database waiting to have the application of fact log, then he must place in EDITING mode. If it will be used for the purposes of tax, then it must be placed in open READ ONLY mode and stop the recovery. Guests receive only 1 device at a time here.

• When creating Data Guard?

  We intend to migrate a database RAC and Data Guard.
  
  When you recommend implementation of custody of data? Before the export/import (from the old server to new CARS in custody of data) or after?

  You must first configure your new primary CARS and then configure the standby of the CARS (after the imp on the primary).
  This way you avoid the mass mailing to redo the expectation that comes with the PMI, if this sequence of steps will be faster.

  Disadvantage: If you take the primary CARS into production immediately after importation, there will be a short period of time without protection in this way DR.

  Kind regards
  Uwe Hesse

  "Don't believe it, try it!
  http://uhesse.com

• How to Setup Data Guard with alter tablespace... begin backup approach

  Hello!
  
  I am writing this compilation of documents in a guard daata establishing in 10g. I was in charge to present different approaches in implementing on Rhel 5.
  
  I came across 3 procedures (which is to duplicate a database with RMAN, then configure it to a Data Guard feature). I read a process using (let's this is what the article said, but procedure was presented):
  
  alter tablespace... .begin backup;
  alter tablespace... .end backup;
  
  then copy the generated files and configure it to the data protection feature.
  
  Someone help it with that? Is there like a blogsite or steps I can take for this scenario?

  Hello;

  The best I found was: (and its same 10 Oracle! and not RMAN.)

  http://sites.Google.com/site/catchdba/physical-standby-database-using-HOTBackup

  There, an old link here on this topic:

  DataGuard configuration using hot backup files

  Hard to find much on this topic as "Hot Backup" almost always comes to RMAN.

  This collection of notes can also help:

  DataGuard knowledge browser Product Page [ID 267955.1]

  And the "Formidable" Powerpoint:

  www.dbspecialists.com/files/presentations/standbydb.ppt

  Seems that this method is dead somewhere between Oracle 8 and Oracle 9

  Best regards

  mseberg

  Published by: mseberg on March 16, 2012 20:31

• 100% ram used on Data-Guard

  Hello
  
  We test our application with Oracle data guard.
  Is version of Oracle 11 g R2 (11.2.0.2)
  The configuration of data-guard is a primary and a physical standby server.
  Both servers have 16 GB of RAM. It is set on an ESX Server as two virtual machines.
  Each vm has two processors with a speed 2127,902 MHz
  OS is Red Hat Enterprise Linux Server version 5.5 (Tikanga)
  It's an arch bit x86_64 machine.
  
  The problem we see is that the consumption of RAM is almost 100%. (97%)
  Earlier, the RAM has 4 GB, believed is not enough and went to 16 GB after we found that same 8 GB is not enough.
  Even after setting the RAM 16 GB, entire memory was used.
  The demand for good results, the answers are quick enough.
  On average, there are 12000 inserts per minute in the database.
  
  The CPU usage is about 25%.
  
  
  We are looking to reduce the consumption of memory less than 80% so that if other applications must be run on the Data-Guard allows him to run or use nearly 100% of memory during the peak or abnormal conditions.
  
  It is a facility dedicated with instance what a single database that is running on the firewall data.
  
  Here is the use of memory (in MB)
  < -.
  [root@vm-lnx-rds1174 logs] free no. m
  total used free shared buffers cached
  MEM: 16051 15650 401 0 267 13532
  -/ + buffers/cache: 1850 14201
  Swap: 8095 0 8095
  ->
  
  Here is the related configuration memory set to the oracle instance.
  < -.
  change the system shared_pool_size set = 0 scope = spfile;
  change the system db_cache_size set = 0 scope = spfile;
  change the system java_pool_size set = 0 scope = spfile;
  ALTER system set LARGE_POOL_SIZE is 0 scope = spfile;.
  change the system sga_max_size set = 0 scope = spfile;
  ALTER system set sga_target is 0 scope = spfile;.
  ALTER system set pga_aggregate_target is 0 scope = spfile;.
  ALTER system set MEMORY_TARGET = 8G scope = spfile;
  ALTER system set MEMORY_MAX_TARGET = 8G scope = spfile;
  ->
  
  Details of the Configuration of Data-Guard:
  < -.
  DGMGRL > see Configuring
  
  Configuration - DGConfig1
  
  Protection mode: MaxPerformance
  Databases:
  PNETs - primary
  PNET - Physical standby database
  
  Fast-Start Failover: DISABLED
  
  The configuration status:
  SUCCESS
  ->
  
  
  Please advice how we can reduce the memory consumption on the machine.
  
  Thank you
  Krishna

  Hello

  on Linux, high mem use is normal. Linux uses all the memory cache of the drive. You can compile this program to prove.

  #include 
  #include 
  #include 
  #include 
  
  int main(int ac, char **av)
  {
          long int n,m,i;
          long delay;
          char *buf;
  
          if(ac < 3) {
                  printf("Usage: %s  \n",av[0]);
                  exit(1);
          }
          sscanf(av[1],"%d",&n);
          sscanf(av[2],"%d",&delay);
          m=n*1024*1024;
          buf=malloc(n*1024*1024);
          // for(i=0;i
  

  and run it as follows:
  . 4000 10 a.out

  It will affect 4000 MB of ram 10 seconds. You'll see that once it's over, you have 4 000 MB of free ram. After awhile, this amount will be lower that linux will do IO operations.

  Paul

• How to implement Data guard

  Hi all
  
  I'm new to the protection of data. I need help to implement dataguard.so can someone tell me link for good video to implement dataguard.

  Hi, the oracle online documentation is one of the best guides.
  for 11 GR 2, if you si vous utilisez use data guard Broker:
  http://download.Oracle.com/docs/CD/E11882_01/server.112/e17023/TOC.htm
  otherwise:
  http://download.Oracle.com/docs/CD/E11882_01/server.112/e17022/TOC.htm
  Also, I highly recommend 'Oracle Data Guard 11g Handbook' press of Oracle to learn details.
  http://www.Amazon.com/Oracle-guard-Handbook-Osborne-Oracle/DP/0071621113
  Kind regards.

• Active Data Guard

  Hello
  Can we create an Active Data Guard in Oracle 10 g R2 release?
  
  
  Vinita

  Hi Vinita;

  Can we create an Active Data Guard in Oracle 10 g R2 release?

  You can not, you need to be level 11g. Please see:
  http://www.databasejournal.com/features/Oracle/article.php/3834931/using-Oracle-11gs-Active-Data-Guard-and-snapshot-standby-features.htm
  http://en.Wikipedia.org/wiki/Oracle_Data_Guard

  Respect of
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