Basic question on the Data Guard environment

Similar Questions

• 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

• service_name multiple effect the data protection environment.

  Hello

  I created an environment for the protection of data in oracle 11 g 2 (11.2.0.3) on Linux OS. Now, I wanted to have the same service_name for primary and physical database of relief?

  Is this possible? It will affect my Data guard environment in the future for some reason any?

  Please let me know if you need more information.

  Thank you

  The entire process is

  1. create the service on the primary (Data Guard apply makes available the day before)

  BEGIN

  DBMS_SERVICE. CREATE_SERVICE ('ernie', 'ernie');

  END;

  2. start the service

  DBMS_SERVICE. START_SERVICE ('ernie');

  -You can stop it too

  DBMS_SERVICE. STOP_SERVICE ('ernie');

  3 define some default settings

  BEGIN

  DBMS_SERVICE. MODIFY_SERVICE

  ('ernie',

  FAILOVER_METHOD => "BASIC."

  FAILOVER_TYPE-ONLINE "SELECT."

  FAILOVER_RETRIES-ONLINE 200

  FAILOVER_DELAY-ONLINE 1);

  END;

  /

  4. create the trigger as shown before (applied Data Guard makes available the day before)

  5. check the listener

  >lsnrctl status

  "Ernie" service has 1 instance (s).

  So original running service will always be there, but use a tnsname as I have posted before and you are ready.

  There are several advantages to this configuration:

  Guests can reconnect using the same connection string.

  Need to communicate with customers is reduced, especially after hours.

  Primary maintenance may occur with only minor interruption of service. (passage)

  Name of databases may be different without impact to the customer.

  So, replace "ernie" with something logical and you are ready to create. The nice thing about having the original service is that you can have another alias of snapshot of database for the short tests without having customers ask why the net80 is the same as the production. It's just another alias.

  Best regards

  mseberg

• issues of database after the start of the Data Guard

  Hello. We run OEM12c in Linux. Everything works well and we are monitoring several DBs targets.

  On our server of db QA, sun solaris 11 running oracle 10 g, we have started to test the configuration of data hold for several instances that we run it. our standby server is called STDBY. Everything works fine, but now we have a problem of management of some aspects of the custody of the data with OEM12c.

  First problem is that bodies appear as SID_IPaddress of the server, and not as DB_UNIQUENAME. DB_DOMAIN. Oddly enough, the std by copy, displays correctly (SID_sbyp.db_domain)... It's very confusing...

  Second problem is when we try to access the Data Guard performance pane, it fails showing (both in primary and secondary DBs)

  Data Guard internal error: see the log of the WHO for more details.

  No idea where to look for this problem.

  All other functions, TOP, performance at home, etc... look good.

  Hello

  On the question «bodies appear as SID_IPaddress of the server, and not as DB_UNIQUENAME.» DB_DOMAIN', you can use the solution to rename the target name desired using below doc MOS

  How do I rename managed targets in Enterprise Manager Cloud control 12 c (Doc ID 1515413.1)

  Kind regards

  Rahul

• Flashback Database using Data Guard environment

  11.2.0.3/RHEL 5.8
  
  I came across several documents that speak of FLASHBACK DATABASE configuration in dataguard environments. We have several
  Physical DBs sleep (Single Instance & RAC) running in our shop. I would like to know two or three major (common) use of FLASHBACK DATABASE data child care settings.
  
  I understand one of the uses mentioned in the below URL ie. a logical error recovery
  
  http://uhesse.com/2010/08/06/using-flashback-in-a-Data-Guard-environment/
  
  I would like to know what are the other major/common use of Flashback Database River in environment DataGuard

  A few other uses:

  (1) flashback allows you to test your DR. So you can activate your watch. Test the connectivity of network/applications and features on your recovery site and when done return the database to a physical standby. It must however ensure that this is allowed in your environment. In some places, I worked, it would be a big no, no, because they have no needs of data loss. However some companies that will allow as long that the watch is delivered in place for some time.

  (2) in the case that you do a failover for a reason, but what has been the main site would then become available, you can flashback what has been your primary to make the eve rather than re-instatiating the database from scratch.
  For example. You have a power failure on your main site if perform you a failover and your watch becomes the principal. Once it's your main site is back online, you can convert your previous primary in a day before making a full return/restoration (or any method you choose) to recreate your standby again. However you also have the option to use flashback on this database and then convert it to a watch because it would be potentially faster than the re-instantiation of the day before.

• Basic question on the configuration of the OVD

  Hi gurus
  I have a basic question about the configuration of the TPM. I have all the "employees" in Active Directory and 'Employees + external users' in OID. The employee user password is maintained in AD, while the same for the external user is maintained in OID.
  
  Query:
  I need to configure authentication for an application for the employees present in the AD and present external users in OID. I have to join the profiles of employees present in AD and OID. Even if the employees are present in the OID, I don't want to configure for authentication of the OAM.
  
  How can I implement this using OAM and OVD.

  I got your condition.

  You said that OID contains external users as well as employees. You manage a container separated for employees in OID. If so, you job would be easy. If there is no container separated for employees on the OID and storing all users (employees and external users) in the same container (default: cn = Users, dc = xxx, dc is com) then you can get the list of AD users only with the following ldapsearch command:

  ldapsearch h Pei d 'cn = sleep '' w sub s b '' 'objectclass = user' SamAccountName

  Create three adapters OVD:

  1 adapter used (this should point to Active Directory)

  2. users adapter (when creating this, you have to exclude users AD, just similar to find the above option).

  3 create the adapter to store as the clubs above two adapters.

  Now, OAM should talk to store adapter.

  I hope this helps.

  Thank you
  GK

  Published by: GK Goalla on October 3, 2012 12:34

• Can a weird question we use Data Guard to apply the bidirectional log?

  Hi I have a question about Data Guard, can we use Data Guard to apply the bidirectional log? I mean keeping the two of them primary and standby to Active status (read write Mode).
  
  Maybe my question seems silly, but I just wanted to check on it.
  
  Thank you

  Laughing out loud

  That Golden Gate or water courses that will work in two ways. One or the other. Puts additional requirements on the hardware is the downside.

  Data Guard does not do that.

• Basic questions about the PL/SQL web services and data source names

  Hello
  
  I've successfully generated a web service for a procedure from PL/SQL packaged JDeveloper 11.1.1.3.0).
  
  The following code was generated in the base class for web services:
  

   __dataSource = (javax.sql.DataSource) __initCtx.lookup("java:comp/env/jdbc/dbconnectionDS");

  However in the weblogic server, the data source name is jdbc/Gisele for deployment fails in a first time.
  
  What is the recommended procedure to solve this problem? The obvious solution is to manually change the source - that's what I did and it worked fine. However if I re - generate the web service I won't lose my change. Is there a better way to do it?
  
  Another question - in the web.xml file that is generated, there is a resource-ref to the data source. I was hoping that change the data source name it would help, but it didn't work. What is - it used to in this context?
  
  Thank you
  Luis

  I forgot to add, so in case some time later and you want to update the connection to your service details, all you have to do is to add the following entry in your weblogic.xml:
  .
  
  JDBC/ref_name_from_web. XML
  JDBC/new_jndi_name
  
  .
  And in this way, you will not have to change any code level to point your web service to another connection.

  Vishal-

• Data Guard environment connection

  How should I make a data hold on patch?
  Our environment is RHEL 5.4, NON-RAC physical 1 and 2 Standby Active.
  
  I think since we have no quarterly maintenance windows for:
  (1) arrest Data Guard
  (2) patch and confirm each relevant databases
  (3) restart data guard
  
  
  Anyone can share there thoughts and experiences?
  
  Thanks in advance.

  You can find the exact in measurements
  How do you apply a group of patches, the power supply or the CPU in a configuration of data secondary physical custody [278641.1 ID]

• Basic question on the client connection to the Fund with several oracle instance

  Oracle 11:
  
  I have just a basic question about how doing listener/customer determine how oracle instance to connect to:
  
  1 tnsnames.ora and listener defines the configuration of the host and the port is that how he comes to know? I'm just trying to understand if the request comes to the listener how listener knows what Oracle instance to route traffic to?
  
  2. when I do sqlplus / as sysdba how knows what Oracle instance to connect to?

  Look at the differences

  [oracle@srv01-18-102 trace]$ cat $ORACLE_HOME/network/admin/listener.ora
  
  cat: /u01/app/oracle/product/ 11.1.0/dbhome_1/network/admin/listener.ora: No such file or directory
  
  -- start listener
  
  [oracle@srv01-18-102 trace]$ lsnrctl start
  
  LSNRCTL for Linux: Version 11.1.0.7.0   on 09-JUN-2009 01:05:42
  
  Copyright (c) 1991, 2009, Oracle.  All rights reserved.
  
  Starting /u01/app/oracle/product/ 11.1.0/dbhome_1/bin/tnslsnr: please wait...
  
  TNSLSNR for Linux: Version 11.1.0.7.0
  Log messages written to /u01/app/oracle/diag/tnslsnr/srv01-18-102/listener/alert/log.xml
  Listening on: (DESCRIPTION=(ADDRESS=(PROTOCOL=tcp)(HOST=srv01-18-102.amis.local)(PORT=1521)))
  
  Connecting to (ADDRESS=(PROTOCOL=tcp)(HOST=)(PORT=1521))
  STATUS of the LISTENER
  ------------------------
  Alias                     LISTENER
  Version                   TNSLSNR for Linux: Version 11.1.0.7.0
  Start Date                09-JUN-2009 01:05:42
  Uptime                    0 days 0 hr. 0 min. 0 sec
  Trace Level               off
  Security                  ON: Local OS Authentication
  SNMP                      OFF
  Listener Log File         /u01/app/oracle/diag/tnslsnr/srv01-18-102/listener/alert/log.xml
  Listening Endpoints Summary...
    (DESCRIPTION=(ADDRESS=(PROTOCOL=tcp)(HOST=srv01-18-102.amis.local)(PORT=1521)))
  The listener supports no services
  The command completed successfully
  
  -- startup database
  
  SQL> shutdown immediate
  Database closed.
  Database dismounted.
  ORACLE instance shut down.
  
  SQL> startup
  ORACLE instance started.
  
  Total System Global Area  849530880 bytes
  Fixed Size                  1346664 bytes
  Variable Size             725615512 bytes
  Database Buffers          117440512 bytes
  Redo Buffers                5128192 bytes
  Database mounted.
  Database opened.
  
  SQL> alter system register;
  
  System altered.
  
  -- check again after a while (or for registration via "alter system register")
  
  [oracle@srv01-18-102 trace]$ lsnrctl status
  
  LSNRCTL for Linux: Version 11.1.0.7.0    on 09-JUN-2009 01:05:50
  
  Copyright (c) 1991, 2009, Oracle.  All rights reserved.
  
  Connecting to (ADDRESS=(PROTOCOL=tcp)(HOST=)(PORT=1521))
  STATUS of the LISTENER
  ------------------------
  Alias                     LISTENER
  Version                   TNSLSNR for Linux: Version 11.1.0.7.0
  Start Date                09-JUN-2009 01:05:42
  Uptime                    0 days 0 hr. 0 min. 8 sec
  Trace Level               off
  Security                  ON: Local OS Authentication
  SNMP                      OFF
  Listener Log File         /u01/app/oracle/diag/tnslsnr/srv01-18-102/listener/alert/log.xml
  Listening Endpoints Summary...
    (DESCRIPTION=(ADDRESS=(PROTOCOL=tcp)(HOST=srv01-18-102.amis.local)(PORT=1521)))
    (DESCRIPTION=(ADDRESS=(PROTOCOL=tcp)(HOST=srv01-18-102.amis.local)(PORT=8080))(Presentation=HTTP)(Session=RAW))
    (DESCRIPTION=(ADDRESS=(PROTOCOL=tcp)(HOST=srv01-18-102.amis.local)(PORT=2100))(Presentation=FTP)(Session=RAW))
  Services Summary...
  Service "DEMO" has 1 instance(s).
    Instance "DEMO", status READY, has 1 handler(s) for this service...
  Service "DEMOXDB" has 1 instance(s).
    Instance "DEMO", status READY, has 1 handler(s) for this service...
  The command completed successfully
  
  -- BEQUEATH
  
  SQL> host
  [oracle@srv01-18-102 ~]$ set ORACLE_SID=DEMO
  [oracle@srv01-18-102 ~]$ sqlplus / as sysdba
  
  SQL*Plus: Release 11.1.0.7.0   on Tue Jun 9 01:17:42 2009
  
  Copyright (c) 1982, 2009, Oracle.  All rights reserved.
  
  Connected to:
  Oracle Database 11g Enterprise Edition Release 11.1.0.7.0
  With the Partitioning, Oracle Label Security, OLAP, Data Mining,
  Oracle Database Vault and Real Application Testing options
  
  -- Query V$PROCESS
  
  SQL> desc v$process
  
   Name                                      Null?    Type
   ----------------------------------------- -------- ----------------------------
   ADDR                                               RAW(4)
   PID                                                NUMBER
   SPID                                               VARCHAR2(24)   <---
   USERNAME                                           VARCHAR2(15)
   SERIAL#                                            NUMBER
   TERMINAL                                           VARCHAR2(30)
   PROGRAM                                            VARCHAR2(48)
   TRACEID                                            VARCHAR2(255)
   TRACEFILE                                          VARCHAR2(513)
   BACKGROUND                                         VARCHAR2(1)
   LATCHWAIT                                          VARCHAR2(8)
   LATCHSPIN                                          VARCHAR2(8)
   PGA_USED_MEM                                       NUMBER
   PGA_ALLOC_MEM                                      NUMBER
   PGA_FREEABLE_MEM                                   NUMBER
   PGA_MAX_MEM                                        NUMBER
  
  SQL> select * from v$process where program like '%(TNS V1-V3)%';
  
  52ACC7FC         19 26000                    oracle                   2
  UNKNOWN                        [email protected] (TNS V1-V3)
  
  /u01/app/oracle/diag/rdbms/DEMO/DEMO/trace/DEMO_ora_26000.trc
                                                             1286124       2699092
           1048576     4616664
  
  1 row selected.
  
  -- "Jump to OS"
  
  SQL> host ps -ef|grep 26000
  
  oracle   26000 14346  0 01:09 ?        00:00:01 oracleDEMO (DESCRIPTION=(LOCAL=YES)(ADDRESS=(PROTOCOL=beq)))
  oracle   27040 14346  0 01:16 pts/1    00:00:00 /bin/bash -c  ps -ef|grep 26000
  oracle   27042 27040  0 01:16 pts/1    00:00:00 grep 26000
  
  -- Connect via listener to the database
  
  -- content off tnsnames.ora
  
  [oracle@srv01-18-102 trace]$ cat $ORACLE_HOME/network/admin/tnsnames.ora
  # tnsnames.ora Network Configuration File: /u01/app/oracle/product/ 11.1.0/dbhome_1/network/admin/tnsnames.ora
  # Generated by Oracle configuration tools.
  
  DEMO =
    (DESCRIPTION =
      (ADDRESS = (PROTOCOL = TCP)(HOST = srv01-18-102.amis.local)(PORT = 1521))
      (CONNECT_DATA =
        (SERVER = DEDICATED)
        (SERVICE_NAME = DEMO)
      )
    )
  
  [oracle@srv01-18-102 ~]$ sqlplus otn/otn@DEMO
  
  SQL*Plus: Release 11.1.0.7.0   on Tue Jun 9 01:28:52 2009
  
  Copyright (c) 1982, 2009, Oracle.  All rights reserved.
  
  Connected to:
  Oracle Database 11g Enterprise Edition Release 11.1.0.7.0
  With the Partitioning, Oracle Label Security, OLAP, Data Mining,
  Oracle Database Vault and Real Application Testing options
  
  SQL> set head off feed on
  
  SQL> desc v$process
  
   Name                                      Null?    Type
   ----------------------------------------- -------- ----------------------------
   ADDR                                               RAW(4)
   PID                                                NUMBER
   SPID                                               VARCHAR2(24)   <---
   USERNAME                                           VARCHAR2(15)
   SERIAL#                                            NUMBER
   TERMINAL                                           VARCHAR2(30)
   PROGRAM                                            VARCHAR2(48)
   TRACEID                                            VARCHAR2(255)
   TRACEFILE                                          VARCHAR2(513)
   BACKGROUND                                         VARCHAR2(1)
   LATCHWAIT                                          VARCHAR2(8)
   LATCHSPIN                                          VARCHAR2(8)
   PGA_USED_MEM                                       NUMBER
   PGA_ALLOC_MEM                                      NUMBER
   PGA_FREEABLE_MEM                                   NUMBER
   PGA_MAX_MEM                                        NUMBER
  
  SQL> select * from v$process where spid in (27372);
  
  52ACC7FC         19 27372                    oracle                   4
  UNKNOWN                        [email protected]
  
  /u01/app/oracle/diag/rdbms/DEMO/DEMO/trace/DEMO_ora_27372.trc
                                                              705064        938372
                 0      938372
  
  -- Use info off v$process to join with v$session
  
  SQL> select * from v$session where paddr = '52ACC7FC';
  
  52112690        170          9     107441 52ACC7FC         93
  OTN                                     3 2147483644
                           ACTIVE   DEDICATED         93
  OTN                            oracle
  27370
  srv01-18-102.amis.local
  pts/1                          [email protected] (TNS V1-V3)
  USER       4C83D838     1817844678 4qpuh5jq5n6y6                0
  09-JUN-09             16777216 4C83443C      1421292656 b1vt3u9abfd3h
                  0 09-JUN-09              16777216
  
  SQL*Plus                                          3669949024
                                             0
  
                  8244            -1              0               0             0
  09-JUN-09                     0 NO  NONE          NONE       NO
  OTHER_GROUPS                     DISABLED ENABLED  ENABLED
                       0
                                                                   NOT IN WAIT
                                             41        322
  SQL*Net message to client
  driver id                                                        1413697536
  0000000054435000
  #bytes                                                                    1
  0000000000000001
                                                                            0
  
  00                  2000153315           7
  Network                                                                  -1
                0 WAITED SHORT TIME                14
                        3730
  DEMO                                                            DISABLED FALSE
  FALSE FIRST EXEC                100 52ACC7FC               4
  
  -- Use info off V$process to look pid on OS
  
  SQL> host ps -ef | grep 27372
  
  oracle   27372     1  0 01:30 ?        00:00:00 oracleDEMO (LOCAL=NO)
  oracle   27413 27380  0 01:30 pts/1    00:00:00 /bin/bash -c  ps -ef|grep 27372
  oracle   27415 27413  0 01:30 pts/1    00:00:00 grep 27372
  

• Basic questions about the port of Vsphere mirror

  I set up a lightweight VM that would deal with inter-VM traffic. To do this, I want to activate the duplication of port between virtual machines.

  
  

  I have ESXi 5.5 Update 1 installed, use the Vsphere (no webclient) client. I see no duplication of port capacity on my Vsphere Client

  

  I have some very basic questions:

  (1) all documentation I've read involving 'Port mirror' is done via web Vsphere client. Vsphere is provided with Vcenter (please, correct me if I'm wrong)

  (2) only functions with "Distributed Virtual Switch", not "switch vSphere Standard" port mirroring. How can I activate "Distributed Virtual Switch"? What products can I download/install and try (suppose I go to the user a license for 60 days)

  (3) exist what API to enable/disable/setup Port mirroring?

  (1) all documentation I've read involving 'Port mirror' is done via web Vsphere client. Vsphere is provided with Vcenter (please, correct me if I'm wrong)

  Because the mirror of port requires a distributed switch, you will need to vCenter Server and once in vCenter Server, you can the vSphere Web Client of the user or the vSphere Client (c# version).

  (2) only functions with "Distributed Virtual Switch", not "switch vSphere Standard" port mirroring. How can I activate "Distributed Virtual Switch"? What products can I download/install and try (suppose I go to the user a license for 60 days)

  You can download the server vCenter Server (60 day trial) and you'll have an Enterprise Plus version for your ESXi host vSphere.

  (3) exist what API to enable/disable/setup Port mirroring?

  Check the comments of this blog: http://blogs.vmware.com/vsphere/2013/01/vsphere-5-1-vds-feature-enhancements-port-mirroring-part-1.html

• Questions about the data reporting PowerCLI store

  Hello

  I have a problem with a script that I use and I'm looking for an idea on the problem.

  I have a script that gathers pretty much all the information on the virtual machine in my cluster. (Disk size, free disc, data store).

  Most of the time, it works very well. But there is something that bothers me little. It doesn't report the data store that each VM is linked to. It works for most, but on a select few, it's not.

  I wonder if there is something in my script which is the first cause, or if it is a question of VSphere.
  
  My script and the output is attached.
  
  Thanks in advance for the help.
  
  -Aaron

  I was able to get the warehouses of missing data as well.

  That's when the VMDK are stored on more than 1 data store for a specific virtual machine.

  In this case, the line

      $myDS = Get-Datastore | Where { $_.Id -eq $VM.Datastore}
  

  nothing will store in $myDS because $VM. Data store is an array of MoRefs.

  In fact you try to map the partitions in the guest OS with data warehouses that host the VMDK files.

  There is no easy solution for that I fear (there are number of threads in this community who are trying to do the same thing).

  I fear that there is no real solution for this problem

• Very basic question :) in the forum

  :)
  
  I don't know her like a basic question, but struggling to get this straight all in detachment.
  I just wanted to know the steps to connect the text into a hyperlink when validating responses...
  
  If someone can solve the example: here_ "go-ahead" should be a hypertext link and the link should point to google.com
  
  See you soon,.
  Manik.

  Something like this:

  [url http://oracle.com] Oracle

  How to write on it?

  [url http://oracle.com]Oracle[/url]
  

• Technical question from the data store

  Hello everyone.

  I have a question that you can maybe answer:

  "Is it possible to have a WARNING message (check) before formatting a LUN (EMC)?"

  Let me explain:

  We currently have a datastore composed of 12 LUN (of 236 GB), and even if this isn't in the best practices of VMware, I made a mistake (und) when creating a new data store.

  Indeed, I used a logic unit number which was attached directly to a virtual machine (in Raw Device) pour set up my new data store.

  Would you have a solution that makes a data control (on the logic unit number) and which could see us the partition proposed pour extend the data store contains data!

  Thanks in advance for your answer!

  J. Gaspoz

  Hi Julien

  Nice to see you on communities

  The vCenter will list all LUNS that are not already in the "Add storage" wizzard data warehouses, and by definition, a RDM en of is not formatted VMFS, since the lun belongs to the VM and it met with filesystem clean so son.

  There is therefore no direct way to pour do what you're asking (UN ESX knows nothing about the data on a non-vmfs LUNs).

  Personally, plug-in a simple way: the LUN ID. All the LUNs that will be used in RDMS are presented to my ESX with UN LUN ID between 50 and 70 (f.ex.). So I know whether or not a lun is RDM.

  Otherwise maybe third-party products (rv maybe tools) can get out a report listing the VM using the RDM.

  I hope that helps!

  Best regards.

  Stéphane Grimbuhler

  Senior consultant virtualization & storage (VCP / VCAP-DCA)

  VMware instructor (VCI)

  My Blog: www.virtualgeek.ch

• init < SID > .ora during the Data Guard configuration - advice needed

  Hi all
  
  I'm looking to implement data between 2 groups CARS hold. A single cluster will be primary and the other is disaster recovery.
  
  I've already implemented the two 11 g R 2 RAC clusters on RHEL 5 and now need some good docs for Data Guard install tips.
  
  Can someone direct me to the right info step by step for custody of data between clusters RAC - detailed explanations of each of the configuration steps would be helpful too, especially around the file init.ora configuration changes between primary and DR sites
  
  Very appreciated
  
  Steve

  Hi Steve,.

  Watch MAA white papers:

  http://www.Oracle.com/technetwork/database/features/availability/Oracle-database-MAA-best-practices-155386.html

  There are resources very good in establishing CARS DG environments like:

  DataGuard 11 g Installation and Configuration best practices on Oracle RAC
  Deployment of Eve fast Oracle RAC: Oracle Database 11g Release 2
  Installation Guide: creating a day before RAC logical database for a primary database of CARS
  Failover of client in databases highly available Oracle Data Guard Configurations

  a.s.o..

  Sebastian