Oracle Database 11 g RAC 2: role of the Public, private, virtual, and SCAN IPs.
Hi Experts,1 can you please let me know why we need to set up under IP addresses for the RAC configuration and what is the role that each plays?
-Public
-Private
-Virtual
-SCAN
2. What is the relationship between IP SCAN and virtual IPs?
Concerning
Hello
859875 wrote:
Hi Experts,1 can you please let me know why we need to set up under IP addresses for the RAC configuration and what is the role that each plays?
-Public
Configured before installation for each node and can be resolved at this node before installing.
Role:
Enable Virtual/SCAN configuration/communication between the nodes in the cluster. Do not start the Clusterware without public IP Interface/address.
Virtual/SCAN will work as an alias IP on the public Interface on the Public network.
-Private or interconnection
Configured before installation, but on a separate private network, with its own subnet, which is not resolved except by other nodes in the cluster member
Role:
Clusterware uses for cluster synchronization (network heartbeat) interconnection and communication of demon among the nodes in the cluster.
RAC uses the interconnect for cache fusion (UDP) and inter-process communication (TCP).
Cache Fusion is the remote Oracle buffers, shared memory mapping between the caches of the members of the cluster nodes.
-Virtual
Configured before installation for each node, but not currently in use. IP, VIP and treats public SCAN addresses than any other addresses on the same subnet.
Role:
The goal is the availability of the applications. If add or remove nodes as your remove VIP client config (with SCAN, it is not necessary)
When a node fails, the VIP associated with it is automatically failed over to another node.
Without using VIPs or FAN, clients connected to a node who died often wait a TCP timeout (which can be up to 10 min) before getting an error.
So, you don't have really a good HA solution without using VIPs and FAN. The best way to use the FAN is to use a client integrated with fast connection failover (FCF) such as JDBC, OCI, or ODP.NET.
-SCAN
Three static IP addresses that are configured on the server (DNS) domain names prior to installation so that the three IP addresses are associated with the name provided as the SCAN, and all three addresses are returned in random order by the DNS to the applicant
Configured prior to installation in the DNS to resolve the addresses that are not currently in use. Addresses on the same subnet than all other IP addresses, addresses VIP and public SCAN
Role:
The goal is the availability of the applications before clients establish communication with CARS and make the whole of the Cluster completely transparent.
IP SCANNER is a new 'layer' (oracle) with high availability network that allows to modify the characteristics of your cluster (IE add/remove nodes) without having to change the configuration in their concept of customers 'grid '.
>
2. What is the relationship between IP SCAN and virtual IPs?
IP SCANNER is used to receive new connection requests and redirects to the VIP IP.
The virtual IP address sets and allow failover of connections after connection is established.
When the client requests a connection, Oracle Client 11 GR 2 find for IP addresses and create a list of all IP SCAN available for this host-scan, the first attempt to connect to RAC uses one of the available SCAN IP addresses.
The listener ANALYSIS will receive this connection and re - direct to one of the available using LOCAL_LISTENER nodes from that time the connection is made by using the virtual IP (VIP).
All SCAN/VIP must be resolved by the DNS.
The customer knows that there is only the Hostname SCAN, which is configured in the connection string.
Once the connection is requested Oracle Clusterware redirects the connection to one of the VIP host name must be resolved by the DNS.
Kind regards
Levi Pereira
Tags: Database
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*
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*
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Creating a table JOBS...
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Populating the REGION table...
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Fill table DESS...
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o ensure that each machine has a static IP address before you start any part of the installation. This can be done without a static IP address, but you must take additional steps (see Guide to Sys Req).
o on machines where you plan to install WLS, make sure you have a 64 bit JDK installed first. If you don't use a F/R 11.1.2.2, you must use Java 6. However, if you decide to use 11.1.2.2, you can use Java 6 or 7. Do not use Java 8 in all cases.
When it comes to the designer, it must be installed on an old machine. In General, I do not recommend to use it longer. Although there is currently not a way to full migration out of it, you can use SQL Developer to manage the db objects that were created/used with it. There are several MyOracleSupport documents that discuss the issue. You can search the Knowledge Base of MOS to find or contact Support for more information.
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The Oracle database is free for individuals?
Is the Oracle database free for private developers, just test the database, or what I personally contact them in order to pay them? Only, I went to the page of download of Oracle and downloaded 2 pcs. Installation of 1 GB, installed files database on my Windows 7 computer and then started using it.
Have you paid attention to the license agreement you agreed before downloading software? Restrictions on use are clearly stated.
Oracle Technology Network Developer for Oracle Database 11g Express Edition license terms
The limits for 11g XE are also documented-
Oracle & reg; Database Express Edition
Oracle & reg; Database Express Edition
HTH
Srini -
ShadowProtect backup Oracle databases
Hi all
I would like to hear from someone if you use ShadowProtect to backup your Oracle databases.
What are your experiences and the advantages and disadvantages in using ShadowProtect like the one and only tools to backup and restore for Oracle databases?
Can the potential of ShadowProtect replaces it commonly use Oracle backup/restore tools?
The reason why I bring this up is because my boss has the idea that ShadowProtect is THE best backup and restore tools. Personally I don't think, because there may be cases where we only need to recover the database and not the whole OS. So need to hear more from you guys.
Thank you.
Published by: moslee on March 22, 2013 02:24moslee wrote:
Hi allI would like to hear from someone if you use ShadowProtect to backup your Oracle databases.
What are your experiences and the advantages and disadvantages in using ShadowProtect like the one and only tools to backup and restore for Oracle databases?
Can the potential of ShadowProtect replaces it commonly use Oracle backup/restore tools?The reason why I bring this up is because my boss has the idea that ShadowProtect is THE best backup and restore tools. Personally I don't think, because there may be cases where we only need to recover the database and not the whole OS. So need to hear more from you guys.
Thank you.
Published by: moslee on March 22, 2013 02:24
Given the complexity of the backup and recovery of an Oracle database, I wouldn't trust anything, but the solution of the Oracle, rman. BTW, you already paid for rman. BTW, I've been known to quietly to apply my own backups rman, then let the solution of "business" save my rman backups. When feces enter the ventilation system, your final responsibility go/no-go is to recover this database. And 'they' (management, storage management team, anyone) will never accept that their backup solution has been insufficient or fatally defective.
Published by: EdStevens on March 22, 2013 06:18
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application of odbc within an oracle database
Is it possible to query using an external odbc link within an oracle database?
I have an odbc link to our accounts package and questioning the limits of credit etc. then return the value to my current database
for example, select the columns of odbcsn.tablename where conditionngac_uk wrote:
Is it possible to query using an external odbc link within an oracle database?Yes, but this requires:
(a) ODBC Manager on the Oracle Server
(b) relevant ODBC driver on the Oracle Server
(c) odbc.ini defining the DSN in the o/s oracle account
(d) the configuration of the server heterogeneous oracle DSN for in + $ORACLE_HOME +.
(e) the listener on this server to support the definition of heterogeneous server (HS)
(f) Finally, a link of database using this definition HSNothing to do with the SQL or PL/SQL languages - the theme of this forum.
Everything about database administration. Not the subject of this forum.
PS. found references in the notes following support:
-Master Note for Oracle Gateway (Doc ID 1083703.1) products
-How the installer DG4ODBC (gateway for ODBC Oracle database) on Windows 32 bits (Doc ID 466225.1)
-How the installer DG4ODBC (gateway for ODBC Oracle database) on 64-bit Windows operating systems (Doc ID 1266572.1) -
Run ODI Interfaces of Oracle database
Hi all
Can we run the ODI interfaces of Oracle database even we execute mappings OWB database by creating a Proc Storeed and passing the name of mapping for execution.
Thank you and best regards,
AnkitCan we run the ODI interfaces of Oracle database even we execute mappings OWB database by creating a Proc Storeed and passing the name of mapping for execution.
There is a fundamental difference between generated code OWB and ODI code generated.
OWB especially generates control loaded package files or sql oracle wchich can easily be called from a Proc Storeed.But in the case of ODI, the final product is XML scenario file IE. All information related to the interface/procedure/package etc are scattered through various repository table and it is very difficult to write a Proc Storeed and connect inter between these tables.
ODI scenario can be called from the rinse command prompt supplied ODI startscen.bat/sh utility
http://gerardnico.com/doc/ODI/Webhelp/en/UserManual/agent/scenario_os.htmNow, you can also run a script shell to a PL/SQL procedure
http://www.DBA-Oracle.com/t_execute_shell_script_plsql_procedure.htmSo considering the above 2 pints, you can run the ODI iscenario of Oracle database, but it will be different from the way in which you are mapping OWB execution.
Thank you
Fati -
Create the connection to the Oracle database
How do I create oracle database connection using flex.
Please mention all necessary codewise and sage (for flex as well as Oracle9i) configuration
Thanks in advance.
VjFlex,
looking at your line of code
url="DataConn.php?lal='sds'"
I would not have thought you need them ' brands around sds. Unless your php code is something dindane special to manipulate, you would put normally just lal = sds and everything would be fine.
You also say "Please pass the asp.net code, you did to do the same thing. Of course, I can't at the moment past on the actual code but the principles are the following (I use c# in ASP.NET as language server-side in this case and SQL server in the database and did not show the string for connection etc - you already know how to do as your database)
sql_call = "select top 10 t1.a, t2.b, t2.c from t1, t2 where t1.id=t2.id order by a";sql_server_command = new SqlCommand(sql_call, sql_server_connection);sql_server_command.CommandType = CommandType.Text;sql_server_data_adapter = new SqlDataAdapter(sql_server_command);dataset = new DataSet();sql_server_data_adapter.Fill(dataset);datatable = dataset.Tables[0];call_encoded = "
";for (int i = 0; i < datatable.Rows.Count; i++) { data_record = "" + "" + datatable.Rows[i][0].ToString() + "" + "" + datatable.Rows[i][1].ToString() + "" + " ";return call_encoded;" + datatable.Rows[i][2].ToString() + " " + ""; call_encoded += data_record; } // for icall_encoded += "Hope that helps. You can see that the returned table is converted into XML so that once back in Flex, it can be easily managed.
Richard
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Oracle Database 10 G R2 upgrade to 11G R2
Hello all,.
I sat down with a particular situation, and hoped some tips.
I currently supports Oracle 10 G R2 installation with one of my clients. It runs on Red Hat Linux. I struggle a bit with the environment as my only customer commissions Linux environment without an X environment. Having said all that, it is my preference to upgrade the databases and the schema, I to 11G and put them under Windows purely because it opens the personnel of non-Unix administration. Applications that use the Oracle DBs are not very critical missions or strong intensity of resources so the loss of performance by moving to Windows is not an important factor (although all comments on this approach, we read with interest).
So to cut a long story, which would be my easiest upgrade option? I have master them Oracle (read: "a lot of tinkering but no training").
Any thoughts or advice?
TIA
WarrenWelcome to the forums!
PL see if MOS Doc 733205.1 (Migration of Oracle Database Instances on OS platforms) can provide the necessary information.
HTH
Srini
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