Two databases on a single server - CPU allocation

Similar Questions

• Two-way replication in two databases in a single server

  I have two instances of installation OGG, one for each database. Let's say that they are respectively OGG1 and OGG2 for DB1 and DB2. Ogg1 has two extracts and OGG2 has 1 replicat for replication of the first. It works well independently.  OGG2 has two excerpts and OGG1 1 replicat for replication of the second, which is for the direction of backword. It also works well independently. As I got to know previously, this is how I do two-way replication, by running these two processes together. I did it.

  But when I did, it gives me the desired result. What currently happening given cannot be changed in one of the databases. When the data changes, it shows the change. but when committed, itself data is modified in its original values. What's the harm? Two processes works well independently.

  
  

  ORASCN Hi Vicky, you were the subject of this question with me. It's good if you can have a look.
  

  Yes, that was the problem. I added "TranLogOptions ExcludeUser ogguser" the main excerpt from two replications. ogguser is my user goldengate.

  Extract einta1q

  SETENV (ORACLE_SID = "dd")

  UserIdAlias ogg_user

  TranlogOptions IntegratedParams (max_sga_size 256)

  TranLogOptions ExcludeUser ogguser

  Exttrail ./dirdat/ip

  LOGALLSUPCOLS

  UPDATERECORDFORMAT COMPACT

  Table SC2.*;

  Now looping does not occur. Replication is as expected. Thank you.

• Install Oracle GoldenGate Linux to synchronize two schemas from database on a single server

  Hi all

  I have to synchronize two schemas from database (Oracle 12 c) in a single host RedHat Linux to demonstrate and understand the use of OGG V12.1.2.1.0. I try to do. But it's complicated and confused me because I am new to Oracle and Linux. I followed this tutorial ( install Oracle GoldenGate for Oracle 12.1.2 on CentOS/6.x to 6.x/RHEL Linux 6.x EL ). But it is difficult to understand how I can match with two diagrams of database on a single server.

  
  And I found this tutorial (Oracle GoldenGate on Linux: two-way replication of Oracle 11 GR 2 to Oracle 11 g 2). He said: "" If you have that one host, it may be useful to change the /etc/hosts file to create aliases forhost01.example.com and host02.example.com.". What it really means?

  The other seems to be useful. But it's totally different from 1. Is that this will help my job since I use 12 c Oracle Server?

  Can I get some tips to continue my task?

  Here's another tutorial - http://www.oracle.com/webfolder/technetwork/tutorials/obe/fmw/goldengate/12c/OGG12c_Integrated_Replicat/index.html

  It has everything set up on a single Linux host.

• How to connect two databases to a single listener

  Hello
  
  How to connect two databases to a listener.is it is possible or not

  Hello

  Yes, you can record a single listener to respond to several databases. There are several ways to do it and the best way that I would suggest for you is the use of "Network Setup Wizard" or "netca", which is a graphical interface that allows you to meet your requirement. Otherwise, you can hardcode in your listener.ora file located in the 'ORACLE_HOME/network/admin/listener.ora '.

  Example is as follows

  Listener.ora

  SCREW =
  (DESCRIPTION_LIST =
  (DESCRIPTION =
  (ADDRESS = (PROTOCOL = TCP)(HOST = lab01) (PORT = 1521))
  )
  )

  SID_LIST_VIS =
  (SID_LIST =
  -1 database configuration
  *(SID_DESC =*)
  * (ORACLE_HOME = /u01/app/oracle/product/11.1.0/db_1)*
  * (SID_NAME = DB1) *.
  *)*
  -Database Setup 2
  *(SID_DESC =*)
  * (ORACLE_HOME = /u01/app/oracle/product/11.1.0/db_1)*
  * (SID_NAME = DB2). *
  *)*
  )

  Then restart your listener.

  Kind regards
  Asif Muhammad

• Configure two MS for two databases on a single host, EM for first DB cannot open

  Hi all
  
  My 10 g database version 2.
  
  In the beginning, I created a database called "ORCL" and configured the EM to her, not manually of course. and it was working fine.
  Then, later, I found that I need to install a second database called "ORCLDW", and since I have used DBCA to create, EM is configured automatically as well.
  
  EM for ORCL is: http://phoenixbai:1158 / em
  EM for ORCLDW is: http://phoenixbai:5500 / em
  
  the problem is that the EM for ORCLDW works perfectly fine, even if I can't open the EM for ORCL.
  
  When I use 'emctl start dbconsole', it works for a very long time, but still, he tells 'EM for ORCL is started successfully.
  However, when I try to open the URL: http://phoenixbai:1158 / em
  Once again, it lasts very very long and doesn't have to open it.
  
  Then, someone at - it never met the similar situtaiton?
  someone has an idea of what could be the reason? and how to check and fix it?
  
  I thank you very much in advance and wish you all a great weekend!

  PhoenixBai wrote:
  Hi all

  My 10 g database version 2.

  In the beginning, I created a database called "ORCL" and configured the EM to her, not manually of course. and it was working fine.
  Then, later, I found that I need to install a second database called "ORCLDW", and since I have used DBCA to create, EM is configured automatically as well.

  EM for ORCL is: http://phoenixbai:1158 / em
  EM for ORCLDW is: http://phoenixbai:5500 / em

  the problem is that the EM for ORCLDW works perfectly fine, even if I can't open the EM for ORCL.

  When I use 'emctl start dbconsole', it works for a very long time, but still, he tells 'EM for ORCL is started successfully.
  However, when I try to open the URL: http://phoenixbai:1158 / em
  Once again, it lasts very very long and doesn't have to open it.

  Then, someone at - it never met the similar situtaiton?
  someone has an idea of what could be the reason? and how to check and fix it?

  I thank you very much in advance and wish you all a great weekend!

  the default behavior for OEM is that it supports a single database for each host
  If you need to support multiple DBs, use Grid Control.

  BTW - OEM is NOT necessary to run or support of Oracle's RDBMS

• Synchronize two schemas from database on a linux server using Oracle GoldenGate

  I followed this guide ( http://www.oracle.com/webfolder/technetwork/tutorials/obe/fmw/goldengate/12c/OGG12c_Installation/index.html?cid=9167 & ssid = 0 ) and for two different databases running on the same instance of database schemas.

  
  What I have now is a Linux server with two Oracle database schemas. I have access through my Linux virtual machine. I want to do the synchronization possible between them.

  I use Oracle GoldenGate to make this possible. What should I do now? Goldengate is must be installed in the server too? I'm totally new to this situation. Can someone give me at least the major steps before going to the more comprehensive study?

  Well understood. This helped.

  Install Oracle GoldenGate Linux to synchronize two schemas from database on a single server

• How performance measurement/reference of a new database on the new server?

  Hello

  I have two servers oracle with following (same) details:

  5.8 64-bit RHEL

  Oracle 10 g 2-10.2.0.5.8

  ASM 10 gr 2-10.2.0.5.8

  Server A: 32 GB of RAM, 8 processors @ 3 .00GHz

  Server b: 128 GB RAM, vCPUs 16 cores

  A server (physical server) already has a database of A. ServerB (VMware - Yes, my client moves all Oracle on VMware servers for some reason any) is a new installation and the new database B with exact same init params as A databas. I expdp data from database A and impdp in database B.

  According to the material, the material is better than the old server B. I made a very simple test to check if the new DB performs better than the one on the physical server. Here are the results:

  I ran a simple query to create a new table. The original table (say, table_a) contains 1.7 million lines and the size is 2.2 GB.

  create table test1

  as

  s elect * from table_a;

  It took 3:28mins on database B, it took 1:55mins only on A database. So, it seems that the new database B scene poor (apparently). Then I looked at the plan of the explain command (don't know if it means a lot, because it s a very simple query) and here's these two databases:

  A (physical server databases

  Plan
  SELECT STATEMENT ALL_ROWS Cost: 14 052 bytes: 2,161,302,003 cardinality: 16,250,391
  	1 FULL TABLE ACCESS TABLE table_a Cost: 14 052 bytes: 2,161,302,003 cardinality: 16,250,391

  Database B (virtual server)

  Plan
  SELECT STATEMENT ALL_ROWS Cost: 59 844 bytes: 2,161,302,003 cardinality: 16,250,391
  	1 FULL TABLE ACCESS TABLE table_a

  
  Cost: 59 844 bytes: 2,161,302,003 cardinality: 16,250,391

  Issues related to the:

  1. Why is the cost different? Should I "calculate statistics" on the B (virtual server) database?

  2. how to pursue the investigation and discover the reason for the difference in time?

  3. what other test can I run to make sure that I have the right database Setup?

  Don't know if it of just enough info - if not, please let me know what else I need to provide.

  The team I perform hands on this server refuses to accept it by saying that it is slower than the existing one.

  Please advise!

  Best regards

  
  

  Looks like you'd get only a few percentages of increase in performance by increasing the pga, while the downturn is probably elsewhere.  Follow Nikolay, Ed and John suggestions.  STATSPACK or AWR can also give clues to e/s, although it would be a mistake to expect them to reflect the performance of the production - but they might highlight if you have problems logwriter or something.    Don't know if I even have to mention My ISP4400: numbers of ORION

• Recommendation req - how two database with the same name can exist on a single server

  Description of the problem: I have a database named 'aaa' (9i db) in production and we need a copy of it to create 'aaa' in the same server with the same name, but an 11g database.
  
  9i 'aaa' is an exixting database in an AIX 5.3 Server.
  You will need to create a copy of this database 11 g named 'aaa' on the same server. I use the utility exp and imp db, but not sure how far it is recommended to have the same db names in a single server. Not sure about listener etc. problems.
  
  Any suggestions on this would be appreciated!

  Create this database for a specific application, test and cut classes to prod.

  The goal is admirable.
  The proposed plan makes me shudder.
  V11.2 must be installed on system new/other, IMO; to reduce the risk of wrong operation on the basis of incorrect data.

• Doubt on single server multiple vs single-server instances several databases

  Hello

  Here is my banner for oracle:

  Oracle banner:

  Oracle Database 11 g Enterprise Edition Release 11.2.0.1.0 - 64 bit Production

  PL/SQL Release 11.2.0.1.0 - Production

  "CORE 11.2.0.1.0 Production."

  AMT for 64-bit Windows: Version 11.2.0.1.0 - Production

  NLSRTL Version 11.2.0.1.0 - Production

  When you use the dbca command, it creates a new database. So is it possible to have multiple databases at the same time running on the same server?

  I tried this option where I had created 2 databases A and B both running.
  

  He kept to launch ' ORA-12520: TNS:listener could not find a Manager is available for the type of requested server "intermittently. I have not found any useful document to solve this because of which I ended up recreate all objects in database B to the database A. Data Base A therefore has its own schemas and schemas from database B.

  Below are examples of files tnsnames.ora and listener.ora, sqlnet.ora trying this option:

  
  

  sample tnsnames.ora file.
  

  A =.

  (DESCRIPTION =

  (ADDRESS = (PROTOCOL = TCP)(HOST = abc.com) (PORT = 1521))

  (CONNECT_DATA =

  (SERVER = DEDICATED)

  (SERVICE_NAME = A)

  )

  )

  B =

  (DESCRIPTION =

  (ADDRESS = (PROTOCOL = TCP)(HOST = abc.com) (PORT = 1521))

  (CONNECT_DATA =

  (SERVER = DEDICATED)

  (SERVICE_NAME = B)

  )

  )

  Listener.ora, example:

  LISTENER =

  (DESCRIPTION_LIST =

  (DESCRIPTION =

  (ADDRESS = (PROTOCOL = TCP)(HOST = abc.com) (PORT = 1521))

  (ADDRESS = (PROTOCOL = CIP)(KEY = EXTPROC1521))

  )

  )

  ADR_BASE_LISTENER = C:\OracleDatabase

  SQL Net.ora:

  NAMES. DIRECTORY_PATH = (TNSNAMES, EZCONNECT)

  ADR_BASE = C:\OracleDatabase

  Lsnrctl status showed services for each database.

  All the world is facing this problem? Can we have multiple databases on a server with a listener running on the same computer? So my Tnsnames.ora file would have 2 strings of connections and file listener with an entry of the listener.

  Can you please share your tnsnames.ora and listener.ora files?

  Also, how to create a single database with multiple instances on the same server? Please tell me about the document that contains an example of this.

  Yes, you can have several databases (running different ORACLE_SIDs) the ORACLE_HOME even on a single server.

  I suspect that the ORA-12520 error was the result of certain constraints of resources (cpu, memory or i/o) resulting in the inability to create a new database session.

  Hemant K Collette

• Configuration of database running on the server with 256 cpu

  Hi all
  
  We have a rac 11.2.0.2 on Solaris 10 installation.
  The servers are 2 and a short configuration is:
  
  SQL > show parameter cpu_count
  VALUE OF TYPE NAME
  ------------------------------------ ----------- ------------------------------
  cpu_count integer 256
  
  psrinfo | WC-l
  * 256 *.
  prtconf | grep 'memory '.
  Memory size: * 130784 MB *.
  psrinfo - pv
  The physical processor has 64 virtual processors (0-63)
  UltraSPARC-T2 + (chipid 0, clock MHz 1414)
  The physical processor has 64 virtual processors (64-127)
  UltraSPARC-T2 + (chipid 1, clock MHz 1414)
  The physical processor has 64 virtual processors (128-191)
  UltraSPARC-T2 + (chipid 2, clock MHz 1414)
  The physical processor has 64 virtual processors (192-255)
  UltraSPARC-T2 + (chipid 3, clock MHz 1414)
  
  There are a lot of settings Oracle automatically design based on the number of CPUs.
  In my case, this number is too high.
  
  For example, normally db_cache_size = 4 MB * cpu, in this case the result is 1 G of db_cache_size.
  
  The plan is to create several databases on this car, so the question is:
  
  Is there a way to design or to tell oracle a different number of cpu?
  and in general...
  You have some tips on how it is possible to configure a machine so powerful that runs a large number of instances?
  
  
  Thanks in advance
  
  Published by: Spugna on May 7, 2012 03:01

  Hi Spugna,

  Of course, as long as you use Oracle 11 g you can use Instance Caging to limit each database, the CPU usage. Although it is no longer applicable to the single server database or a CCR node I see no reason why not to use with RAC. Look here for more information:
  http://docs.Oracle.com/CD/E14072_01/server.112/e10595/dbrm007.htm

  You could also consider the consolidation of these different in a large database of databases if it is possible and there is no dependence application?

  Kind regards
  EVS

• One or two database is necessary, if I have two FxM?

  My current FxM has prob and portal together.

  I intend to have two FxM, which means two probes.

  Should I two portal on each server, or a Portal Server who sit together with a probe?

  If you need a Portal Server, should I two database or a database to store parameters of monitor?

  In a situation where you have more than one collector/probe, it is advisable to have a portal that consolidated reports for Foglight.  The portal also provides a single interface for configuration.  This is particularly important if you have the same application or a site monitored by the collector/probes.

• Cost of the execution plan is different in the two databases

  Hi gurus,

  I have two databases, which are 12 C.

  The execution plan cost is different in the two databases for the same query.

  is it possible to copy the execution to another plan.

  Thank you in advance

  Kind regards

  REDA

  Jr.Raj wrote:

  There are a few differences.

  The machine that has a high cost, has setup up, linux, 2-node RAC, more CPU.

  and

  other machine windows server less Setup and less cpus.

  Please explain, cost really makes a difference.

  Thank you & best regards

  REDA

  You simply can't compare costs like that. It does not work like that. Especially through two different systems.  Here is a very good read: column the COST of the PLAN to EXPLAIN. Oracle FAQ

• ESXi 5.1 - Exchange 2007 - file Page memory and CPU allocation

  I'm currently migrating a class Cluster CSC Exchange 2007 running on vmware on windows 2008, 2003.  It is also a SCC Cluster.  I followed all of the vmware and MS best practices, but not sure of one thing IM is the size of memory and CPU allocation page/swap file.  I have 5 Esxi hosts and each is running only Exchange 2007 comments according to vmware and MS recommendations when you use the Clustering of CSC.

  Each host has 2 CPUs to 6 cores per processor and 48 gb of Ram and that each host will have only a guest, would like to send it to the guest.  I read somewhere that it is recommended this page exchange 2007 memory size + 10 mb file.  Do I really need to get the page to the size of the file?  250 GB of disk space is a lot for swap files! IM also not sure what to set the allocation processor too.  If someone can point me in the right direction, I would be grateful.

  Thank you

  Dave

  Hi dlargeit,

  First of all, off - welcome to the VMTN forums!

  I'm with Josh26 I've ever seen any recommendations indicating that when a CCS cluster virtualization virtual machine by host is taken in charge. It is recommended to keep only a single node SCC by host (which is true for all virtual clusters or technologies like Exchange CSC/CCR/DAG), but there is nothing specific regarding the keep only a single virtual machine by host.

  On the file page, you are actually right on that.  For Exchange 2007, the paging file must be on the amount of memory configured as well as 10 MB to account for overhead costs of the kernel.  It is recommended by Microsoft and it is planned to provide enough space page Exchange should exchange more provide the necessary overhead if meet you a server failure and need to create a complete memory dump.

  You can find this recommendation here: http://technet.microsoft.com/library/aa996719 (EXCHG.80) .aspx

  In terms of CPU allocation, which should really be made according to your individual needs rather than just give all the resources the VM on the ESXi host.  Microsoft lists the maximum recommended for processor resources (Planning Processor Configurations: Exchange 2007 help) and it says that 12 hearts is the maximum for mailbox or Hub Transport box.  Is your really big enough environment need a lot of CPU resources?  Why not start small and increase it if necessary?

  You are in control of your own destiny in some of these configurations.  If you know the recommended page file size is 10 MB of RAM +, do not give the server more RAM is really needed, or you will have to pay for it in the consumed disk space to host the pagefile.  See the guide to memory resources (Planning Memory Configurations: Exchange 2007 help) to understand the maximum rates of memory for Exchange.  You will see that the maximum memory is 32GB, so there are very few reasons to assign all 48GB of RAM on your server, if it can even use.

  In short, the size of the server based on the real needs and I am confident, that you will have a virtualized Exchange system that performs as well as physical.

  Matt

  http://www.thelowercasew.com

• two databases on the same windows machine. Unable to connect to a database.

  I installed two databases(11g) DB1 (ORCL) DB2 (DST) on windows vista. I am able to connect to the ORCL database only and connecting to the DST, I get the following error. The tnsentry is as below.
  I started the listener, and after that the DB service DST, but it did not help. I had created another LISTENER_DST auditor for the database of DST. Please advice if I am missing any action necessary.
  
  
  
  C:\Users\ratan > sqlplus scott/tiger@orcl
  
  SQL * more: Production of release 11.2.0.1.0 sat Nov 26 16:43:37 2011
  
  Copyright (c) 1982, 2010, Oracle. All rights reserved.
  
  
  Connected to:
  Oracle Database 11g Enterprise Edition Release 11.2.0.1.0 - Production
  With partitioning, OLAP, Data Mining and Real Application Testing options
  
  SQL > exit
  Disconnected from the database to Oracle 11 g Enterprise Edition Release 11.2.0.1.0 - Pr
  production
  With partitioning, OLAP, Data Mining and Real Application Testing options
  
  C:\Users\ratan > sqlplus scott/tiger@dst
  
  SQL * more: Production of release 11.2.0.1.0 sat Nov 26 16:43:44 2011
  
  Copyright (c) 1982, 2010, Oracle. All rights reserved.
  
  ERROR:
  ORA-12514: TNS:listener is not currently of service requested in connect
  descriptor of
  
  
  Enter the user name:
  C:\Users\ratan > set oracle_sid = DST
  
  C:\Users\ratan > sqlplus scott/tiger@dst
  
  SQL * more: Production of release 11.2.0.1.0 sat Nov 26 16:50:02 2011
  
  Copyright (c) 1982, 2010, Oracle. All rights reserved.
  
  ERROR:
  ORA-12514: TNS:listener is not currently of service requested in connect
  descriptor of
  
  
  Enter the user name:
  
  Entered TNS are as below
  
  
  tnsnames.ora # Network Configuration file: C:\app\ratan\product\11.2.0\dbhome_1\network\admin\tnsnames.ora
  # Generated by Oracle configuration tools.
  
  ORACLR_CONNECTION_DATA =
  (DESCRIPTION =
  (ADDRESS_LIST =
  (ADDRESS = (PROTOCOL = CIP)(KEY = EXTPROC1521))
  )
  (CONNECT_DATA =
  (SID = CLRExtProc)
  (PRESENTATION = RO)
  )
  )
  
  LISTENER_ORCL =
  (ADDRESS = (PROTOCOL = TCP)(HOST = localhost) (PORT = 1521))
  
  
  DST =
  (DESCRIPTION =
  (ADDRESS = (PROTOCOL = TCP (PORT = 1522))(HOST = localhost))
  (CONNECT_DATA =
  (SERVER = DEDICATED)
  (SERVICE_NAME = DST)
  )
  )
  
  ORCL =
  (DESCRIPTION =
  (ADDRESS = (PROTOCOL = TCP)(HOST = localhost) (PORT = 1521))
  (CONNECT_DATA =
  (SERVER = DEDICATED)
  (SERVICE_NAME = orcl)
  )
  )
  
  
  out of lsnrctl is as below
  
  C:\Users\ratan > lsnrctl status
  
  LSNRCTL for 32-bit Windows: Version 11.2.0.1.0 - Production November 26, 2011 16:51
  : 24
  
  Copyright (c) 1991, 2010, Oracle. All rights reserved.
  
  Connection to (DESCRIPTION = (ADDRESS = (PROTOCOL = TCP) (HOST = ratan-PC)(PORT=1521)))
  TNS-12535: TNS:operation expired
  AMT-12560: TNS:protocol adapter error
  AMT-00505: Operation timed out
  Error Windows 32 bits: 60: unknown error
  
  C:\Users\ratan >
  
  Please let me know if any information is needed to answer my question.

  Ratnesh Sharma wrote:
  I don't think that there is such a limitation. but I don't know if a single listener can work. I installed 2 db to oracle 11g on the operating system of windows vista on my pc at home.

  A single listener, with the default name for LISTENER, using port 1521 single default, is quite capable of - in fact, WAS DESIGNED FOR - several instances of several versions of several ORACLE_HOMEs service. Having several headphones rarely accomplishes nothing except confusion between the diagnostic process, as your case showed clearly.

  A listener is simply a broker for connection requests. Having a listener for each database on a given server is the equivalent of the telephone company, creating and maintaining a separate table for each telephone number in the system

  You must read http://edstevensdba.wordpress.com/2011/03/19/ora-12514/

• Two sources on the same server db

  Hello
  
  I already have a replication (DB1 to DB2).
  On a single server, I have a new (DB2) databases to replicate
  a new database on another server (DB4),
  as below:
  

  Server1     server2
  DB1   --->    DB3
  DB2   --->    DB4

  Can I use a distribution (directory) to ogg
  or I have to create a new directory (with delivery)
  for this new replication?
  
  Thanks for your advice

  You can have the Manager running against two databases.

  For each database, you will need a user of GoldenGate database.

  If you want to keep things separate, there is no problem having a total of four distinct GoldenGate facilities, each with its own process manager. (this is the direction I would take)

  The footprint of the installation is not that big, more:

  s ' there is a problem between 1 and 3, 2 and 4 will not suffer (and vice versa)
  -If you need to upgrade a pair of databases, the other two will not be affected
  -You can have different political purge between 1/2 and 3/4