Oracle RAC

Similar Questions

• Turning to Oracle RAC to the only Oracle database

  Hi all

  We are responsible for "make a copy" of Oracle RAC database a customer and our plan is to finish with the FCAC and allows you to host a new unique Oracle database. Very few of us familiar with CARS and looking for suggestions on how to do it (without affecting the source JAR).

  Can take a full expdb of the source database and simply use impdp to import into the standalone database server?

  Comments/suggestions appreciated.

  Thanks in advance.

  Can take a full expdb of the source database and simply use impdp to import into the standalone database server?

  It is an option. Data pump does not care if the source and/or destination is CARS or a mix. If the database is too large, it can take a lot of time to complete.

  Another option is to use the DOUBLE of RMAN feature. And another option is to restore the database from a backup.

  See you soon,.
  Brian

• Redo command of journal online in Oracle RAC

  Dear,

  If I have 2 Oracle RAC nodes:

  Node 1:2 Online Redo log groups (Group 1 and group 2) - each Member of a group

  Node 2:2 Online Redo log groups (Group 3 and group 4) - each Member of a group

  Would like to know when the switch occurs on the redo log groups, it moves the Group 1 to group 2, then return in the Group 1... or

  Group 1 to group 2, and group 3?

  Concerning

  Claude

  Each Instance has a Thread.  So the Instance on node 1 has 1 wire that consists of groups 1 and 2.  Redo all written by instance of node 1 will always be to groups 1 and 2 only.  Never to groups 3 and 4 (except if they fell and added to 1 thread)

  Similarly, the instance on node 2 will write for groups 3 and 4 only.

  Hemant K Collette

• Oracle RAC and replacement of equipment

  Hello world

  next year our Oracle RAC (hardware) servers will be is more supported. We have a 2 node RAC (SE) running on Linux 5. For you, what is the strategy easier (and safer) to replace the equipment:

  • Reinstall complete with database exports / imports.
  • Adding new nodes to the cluster with new servers and delete 'old' (but it seems that the same version of operating system is required in accordance with the documentation).
  • Clone of the cluster according to the Oracle documentation on news servers.

  Thank you for all your ideas. I googled a bit, but I've not found much info.

  Carlos.

  • Adding new nodes to the cluster with new servers and delete 'old' (but it seems that the same version of operating system is required in accordance with the documentation).

  It's what I strive for. If your time with new nodes in the cluster is short (less than 24 hours), and you stay on the same distribution (i.e. OL5 to OL7), then several times, this isn't a problem. If you still have concerns and do not feel comfortable with this recommendation, then I'll recommend another avenue. I often used it when I was doing something similar for the production system was too critical to take no risk.

  1. Up new servers in a cluster. You can even start with the version of grid Infrastructure more later/more big who can save a future update maybe you.
     1. It will take a new OCR and voting disk new configuration.
  2. Attach the storage shared on the new cluster. For a short period of time, you will have storage mounted to both old and new.
  3. Install the RDBMS software on the new cluster. Wear on all the config files you might need more... tnsnames.ora, sqlnet.ora, etc..
  4. When you are ready to drop the database on the old cluster, cutting on the new cluster.
  5. Use "srvctl database add" to add the database to the new cluster.
  6. Use 'srvctl add instance' to add the instances to the new cluster.
  7. (Optional but normally a good idea), use 'srvctl add service' to add services to the new cluster.
     1. Steps 5 and 6 above usually use the same name of db, same instance names, same service name.
  8. You now have the database running on the new hardware. Stop the old servers

  The only other sticking point would be handling the SCAN and traditional VIP. When I made this drive, I usually my network guy change the SCAN VIP and traditional dignitaries to be alias in DNS that point to the new VIP.

  If you do your homework and have everything ready to go, the downtime can be less than 15 minutes for this approach.

  See you soon,.
  Brian

• Oracle RAC (physically separate buildings)

  Hello

  I would like to know who already had this experience to prepare an Oracle RAC in separate buildings.

  We have two data centers, and we intend to prepare two separate nodes physically in this building (each node in one building).

  Data centers are in the same city.

  Could this be possible?

  Thank you!

  This looks like an extended cluster, alias "stretched CARS." It's a reasonably normal environment, although there are some considerations. You'll need storage on each side with ASM mirror and a third independent unit (a NFS server is good) for a copy of the file with the right to vote. A 10 GHz ethernet link should be more than enough. If you need assistance configuring her, let me know

  --

  John Watson

  Oracle Certified Master s/n

• Issue of INS-35354 when installing Oracle RAC 12 on infrastructure Oracle Grid 12

  Hello

  I am trying to install Oracle RAC 12.1.0.2 one node installation on Windows Server R2 2012, but the installer told me:

  'Valid [INS-35354] the system on which you try to install Oracle RAC One doesn't not part of a cluster.'

  On the same server I have is installed and running Oracle Grid Infrastructure + ASM.

  I don't know what is missing the installation program, which is possible to register? The installation program does not provide which had not passed the specific audit.

  Thanks for the tips

  Georg

  

  

  

  Hello

  A CCR node does not mean that you install the grid infrastructure in a single node and install a base of a RAC data on this node.

  Basically, a concept CAR is similar to active passive clustering to provide high availability. To have a node database RAC upward and launched, you will have to install clusterware on at least two server by selecting the option during the installation of the IM.

  Pls follow the below post for detailed answer

  INS-35354: validates the system on which you are trying to install Oracle RAC not part of a group when installing a 12 c RAC node database

  Concerning

  Krishnan

• Java oracle rac connection using scan url

  Hey,.

  Im trying to connect to an oracle rac using jdbc thin. When I use the analysis as the host

  Like this

  String url = "jdbc:oracle:thin:@// < scan >: port/servicename;

  I get error 1153, connection refused

  but when I use the ip address of the RAC instead of analysis

  String url = "jdbc:oracle:thin:@// < ip >: port/servicename;

  the connection is successful

  is the issue at the level of the application? or is the problem with the server

  Thanks for the help.

  I solved the problem. I changed my ojdbc.jar from 14 to 6. I would like to know why it works because I've been using ojdbc14 for oracle 11g and I've never had a problem

• Oracle RAC private interconnectivity problem

  Hello

  We set up Oracle RAC on RHEL 6.5.

  Our reference document is "deployment Oracle RAC 11 g R2 Database on Red Hat Enterprise Linux 6" verion 1.0 of Red Hat Reference Architecture Series.

  According to the document.

  Two subnets have been used for interconnectivity.

  Two physical switches were used.

  

  My Question: I see that there is a connection between two switches. What is the purpose of this link?

  Please let me know example of configuration of Private Switch A and Switch B private.

  Thank you.

  Sajeeva.

  Because its use of redundant interconnection function because the function HAIP is officially called would say that networks need to be in different subnets. So, if we ignore the diagram above we'll finish with the following configuration:

  eth1 of each server that is running on the same subnet:

  Server1 - 10.0.1.1

  Server2 - 10.0.1.2

  eth2 of each server that is running on the same subnet:

  Server1 - 10.0.2.1

  Server2 - 10.0.2.2

  FAQ for IP highly available (HAIP) for version 11.2 (Doc ID 1664291.1):

  "Each NIC is defined as a cluster interconnect (using oifcfg setif) on a given node will have a static ip address assigned to it and each cluster NIC interconnection on a given node must be on a single subnet."

  The only advantage I see of HAIP, is that all your interfaces are active at all times where as with collage will be you almost end up with an active/passive configuration.

  Kind regards

  EVS

• How to apply the PSU on Oracle RAC?

  Hello guys,.

  How about the Oracle RAC database without any stop PSU? (patch only database, not clusterware).

  Lets say I have 2 CCR node on different hosts with separate houses oracle/grid (no shared resources). What are the steps to avoid blackouts? I simply apply the last OPatch on grid/oracle homes, and then generate the oracle user ocm.rsp file and simply run as root: opatch auto/patch/path /-oh oracle_home - ocmrf /path/ocm.rsp and he will do everything for me on this node? then move service on node patched and do the same on another node? Oh, and there will be no interruption of service? Thank you!

  Gytis

  Hello

  Yes, the concept of a rolling patch is that the DB will always be upward, albeit on a node or another (or maybe 2 of 3, etc.)

  Check out this doc, spec 14.2.4 reduce planned downtime Maintenance

  Essentially an instance will come down in time. You can either manually a node patch or another, or well let Oracle patch bearing (but make sure you test it in the configuration of test first, if you have one, or else we put up with the same group of patches just in case).

  The idea is that the VIP relocate Node2, or if you use SCAN apps will detect node1 down.

  If possible, it is good to do this with a team Apps - ask them to move the connection with Betclic / application servers to the next node in the cluster, then the first patch (rolling patch), then exchange all node1 and make the node 2.

  The same steps apply for clusterware.

  See you soon,.

• How can I add data file to an existing table on Oracle RAC ASM with no OMF? Thank you!

  How can I add data file to an existing table on Oracle RAC ASM with no OMF? Thank you!

  Hello

  So I guess you have some files in ASM, see your first existing file structure

  Select file_name

  from dba_data_files;

  and to add to an existing table, the example below (even if you're better sticking with OMFs!)-is that what you are looking for?

  SQL > create tablespace TEST1

  2 datafile '+ DATA' size 1 M;

  Created tablespace.

  SQL > select file_name in dba_data_files;

  FILE_NAME

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

  +Data/orcl2/datafile/users.259.859820983

  +Data/orcl2/datafile/undotbs1.258.859820983

  +Data/orcl2/datafile/SYSAUX.257.859820983

  +Data/orcl2/datafile/system.256.859820981

  +Data/orcl2/datafile/example.269.859821049

  +Data/orcl2/datafile/Test1.271.859843053

  6 selected lines.

  SQL > alter tablespace TEST1

  2 Add datafile ' + DATA / mynewfile01.dbf ' size 2 m;

  Tablespace altered.

  SQL > select file_name in dba_data_files;

  FILE_NAME

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

  +Data/orcl2/datafile/users.259.859820983

  +Data/orcl2/datafile/undotbs1.258.859820983

  +Data/orcl2/datafile/SYSAUX.257.859820983

  +Data/orcl2/datafile/system.256.859820981

  +Data/orcl2/datafile/example.269.859821049

  +Data/orcl2/datafile/Test1.271.859843053

  + DATA / mynewfile01.dbf

  Thank you

• Need to understand the basics of Oracle RAC and grid technology, for training

  I need to understand the infrastructure Oracle RAC and grid, a manager / training perspective.

  I see links here and here , so a few questions:

  -What is the fundamental difference from the layman's point of view (for example, a Manager)?

  -What training options are available for a generic 11g DBA to learn this new technology? I've seen this course from a partner of Oracle ("" courses: Oracle 11 g: RAC and Grid Infrastructure Administration accelerated Release 2 ""), to a boat load of money, during 5 days I think. So we are looking for something a bit more reasonable (and accessible), for example, books, online, etc.

  WM Peck 1958 wrote:

  I need to understand the infrastructure Oracle RAC and grid, a manager / training perspective.

  I see the links here and here, so a few questions:

  -What is the fundamental difference from the layman's point of view (for example, a Manager)?

  -What training options are available for a generic 11g DBA to learn this new technology? I've seen this course from a partner of Oracle ("" courses: Oracle 11 g: RAC and Grid Infrastructure Administration accelerated Release 2 ""), to a boat load of money, during 5 days I think. So we are looking for something a bit more reasonable (and accessible), for example, books, online, etc.

  For a very basic definition, ACR is technology that is used by the database and IM is the infrastructure that makes the CAR work. In a response to the forum, this is probably all that can be said about the two. For a very long answer, you should read the links you cited.

  # 2, the course you are looking at is called accelerated because it combines two courses in one week training-RAC (4) and GI (3). So it's a day 7 curriculum that we would do in a 5 day course and who must justify its cost. But let me say, it's a really very good. But on the other side, it can be pretty intimidating to someone who does not already know these technologies. So I suggest that you send your team to each course individually and no doubt after doing some research. They can start to read the following books

  Pro Oracle Database 11g RAC on Linux

  https://www.mheducation.co.in/HTML/9781259004063.html

  And this link to doc,

  Online Oracle Database Documentation 11g Release 2 (11.2)

  Aman...

• Oracle RAC 12.1.0.2 (GI battery) deployment on OEL 7 (3.8.13 - 35.3.4.el7uek) fails with ORA-27102

  Hi guys,.

  I am currently trying to deploy a complete installation (GI battery) of Oracle RAC 12.1.0.2 cool on OEL 7 (3.8.13 - 35.3.4.el7uek) with 2 nodes for validation purposes. However the installation itself went well, but 'Creation repository for Oracle Grid Infrastructure Management container' step fails with "ORA-01034: ORACLE not available / ORA-27102: out of memory / Linux-x86_64 error: 12: cannot allocate memory". The steps of runInstaller validation completed successfully, but I never take this step of configuration without jumping.

  Here is my configuration which should normally avoid such errors ORA.

  Host

  -bash - $4.2 uname - a

  Linux OELRAC1 3.8.13 - 35.3.4.el7uek.x86_64 #2 SMP Tue Jul 29 23:24:14 CDT 2014 x86_64 x86_64 x86_64 GNU/Linux

  "Creation of repository database for Oracle Grid Infrastructure Management container" error in /oracle/base/cfgtoollogs/dbca/_mgmtdb/trace.log

  From restoration to August 9, 14

  allocated channel: ORA_DISK_1

  channel ORA_DISK_1: SID = 12 type of device = DISK

  channel ORA_DISK_1: from the restore backup set data file

  channel ORA_DISK_1: specifying datafile (s) to restore from backup set

  channel ORA_DISK_1: restore datafile 00003 to + GRID

  channel ORA_DISK_1: backup /oracle/grid/12102/assistants/dbca/templates/MGMTSeed_Database.dfb piece reading

  channel ORA_DISK_1: ORA-19870: error when restoring the backup /oracle/grid/12102/assistants/dbca/templates/MGMTSeed_Database.dfb piece

  ORA-19504: could not create the file "+ GRID.

  ORA-17502: ksfdcre:4 cannot create the file + GRID

  ORA-15001: diskgroup 'GRID' does not exist or is not mounted

  ORA-01034: ORACLE not available

  ORA-27102: out of memory

  Linux-x86_64 error: 12: cannot allocate memory

  Additional information: 2663

  Additional information: 1565392897

  Additional information: 161480704

  switch to the previous backup

  Number of folder of the data file = 3 name = + GRID

  RMAN-00571: ===========================================================

  RMAN-00569: = ERROR MESSAGE STACK FOLLOWS =.

  RMAN-00571: ===========================================================

  RMAN-03002: failure of the restore command at 09/08/2014 19:41:47

  ORA-01119: error in creating file of database "+ GRID.

  ORA-17502: ksfdcre:4 cannot create the file + GRID

  ORA-15001: diskgroup 'GRID' does not exist or is not mounted

  ORA-01034: ORACLE not available

  ORA-27102: out of memory

  Linux-x86_64 error: 12: cannot allocate memory

  Additional information: 2663

  Additional information: 1565392897

  Additional information: 1614807040

  RMAN-06956: create the data file failed; try again after removing + OS GRID

  SHM / CPI (check the id of shm with previous information)

  -bash - $4.2 ipcs - a

  -Shared memory segments-

  key shmid owner perms bytes nattch status

  1565360128 0 x 00000000 grid 640 4096 0

  1565392897 0 x 00000000 grid 640 4096 0

  0xfba47600 1565425666 640 24576 29 grid

  Memory of the ASM instance setting

  SQL > see the memory settings

  VALUE OF TYPE NAME

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

  whole big memory_max_target 1076M

  whole large memory_target 1076M

  ASM disk groups

  SQL > select NAME, STATE, TOTAL_MB, USABLE_FILE_MB from v$ asm_diskgroup;

  NAME STATE TOTAL_MB USABLE_FILE_MB

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

  RACK MOUNTED 6144 4868

  / dev/shm to memory_target (more than enough free space)

  -bash - $4.2 df-h

  Size of filesystem used Avail use % mounted on

  tmpfs, 630M 2.4 G 3.0 G 21% / dev/shm

  Kernel for SHM limits set to unlimited parameter

  -bash - $4.2 sysctl - a | grep shm

  kernel.shmall = 1152921504606846720

  kernel.shmmax = 922337203685477580

  User limits on unlimited for memory

  -bash-4, $ 2 cat /etc/security/limits.conf

  # Oracle settings

  grid soft nproc 2047

  grid hard nproc 16384

  grid soft nofile 1024

  grid hard nofile 65536

  Oracle nproc 2047 soft

  Oracle nproc 16384 hard

  Oracle soft nofile 1024

  Oracle hard nofile 65536

  * hard memlock unlimited

  * soft memlock unlimited

  -bash - 4, $ 2 known - grid

  -bash - $4.2 ulimit - a

  the file size (blocks, - c) of base 0

  (kbytes, - d) data seg size unlimited

  scheduling priority (-e) 0

  size of the file (blocks, f) - unlimited

  pending signals (-i) 23953

  Max locked memory (kbytes, - l) unlimited

  size of the memory (k, m) max - unlimited

  open files (-n) 1024

  a size (512 bytes, - p) 8 hose

  (Bytes, - q) POSIX message queues 819200

  real-time priority (-r) 0

  size (Ko, - s) 8192 battery

  time processor (seconds,-t) unlimited

  Max user process (-u) 2047

  virtual memory (KB), - v) unlimited

  the locks on files (-x) unlimited

  So what the hell is wrong here? Why the instance ASM (+ ASM1) returns the error below, even if there is no memory limit / problem. The error with the disk group is also absolutely no sense.

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

  ORA-01119: error in creating file of database "+ GRID.

  ORA-17502: ksfdcre:4 cannot create the file + GRID

  ORA-15001: diskgroup 'GRID' does not exist or is not mounted

  ORA-01034: ORACLE not available

  ORA-27102: out of memory

  Linux-x86_64 error: 12: cannot allocate memory

  Additional information: 2663

  Additional information: 1565392897

  Additional information: 1614807040

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

  Someone at - he encounter the same problem with 12.1.0.2 by deploying the CDB for Grid Infrastructure Management repository? Is there something special with UEK3 (3.8.13 - 35.3.4.el7uek) on 7 OEL? Any necessary special kernel parameter (although the runInstaller controls do not mention)? I'm totally tapped by GI 12.1.0.2.

  Thank you.

  Best regards

  Stefan

  Hi guys,.

  I was finally able to solve this problem.

  She was related to a memory on the provisioning of problem in the virtual environment as both nodes are VMs. Unfortunately none of these errors of memory were populated / pushed somehow in the virtual machine.

  Best regards

  Stefan

• Is it possible create Oracle RAC on NFS datastore?

  Hello

  Is it possible create Oracle RAC on NFS datastore?   With the VMFS data store, we use VMDK files as the Oracle RAC shared virtual disks with the Comptrollership and multi-writer SCSI Paravirtual, what about the NFS datastore? is the controller SCSI Paravirtual and writer multi function supported on the NFS datastore?

  Unless I'm missing something, this is not supported on NFS.

• Redo Log in Oracle RAC 11G

  Hello

  I work with oracle RAC 11gr2.0.3.

  We have an expectation to top event 'parallel log file reading', and other types of waiting as 'log sequential read', 'log file sync '...

  When I check the size of redo log = 50 M, while in the old database oracle 10 g 2 (no CARS), the size of redo log = 150 M.

  So, I want to know if I should increase our redo log in our Oracle RAC database, or not?

  Should be again small use connect oracle RAC, oracle RAC without difference?

  Thank you for your help.

  No matter the size, it is recommended to use at least 3 groups of newspapers by thread. This is particularly important if the archive log mode is activated.

  See you soon,.

  Brian

• Change password for an Oracle RAC installation account

  All,

  I'm not an Oracle DBA, but currently I am asked to fill in until a certified Oracle DBA lights.  I work with MS SQL Server and have servers managed for some time.

  That being said, my question is probably a simple.  In the Oracle 11 g RAC 2 installation guide, it tells you * must * use an account that exists on both servers to install.  So far, so good, we have a domain dedicated to this purpose and no other account.  However, due to a recent change in policy, we must also change the password on this account on a regular basis (annual).  My question is, which, if it is, a will this affect on our Oracle RAC database facilities?

  If we simply change the password at the domain level, rather than to check the "must change password at next login", is this cause problems with our data?

  My inclination is no, we have no problems, because current services 'running' Oracle use the local NETWORK SERVICE account that will not be changed, but confirmation of this would be appreciated.

  Environment:

  Operating system: Windows Server 2008 R2 SP2

  Oracle: 11.2.0.2 and 10.2.0.4

  GRID: 11.2.0.2

  Thank you

  Jason has.

  Change password of OS isn't a problem for Oracle DB.