What is sid in oracle 10g

what is sid in oracle 10g

Oracle Database - System Identifier (SID)

Jan 15,  · The SID is a site identifier. It plus the Oracle_home are hashed together in Unix to create a unique key name for attaching an SGA. If your Oracle_sid or Oracle_home is not set correctly, you'll get "oracle not available" since we cannot attach to a shared memory segment that is identified by magic key. Oct 07,  · The System Identifier (SID) identifies a specific Oracle Database - Instance (Database Start-up). The SID uniquely distinguishes the instance from any other instance on the same computer. Each database instance requires a unique SID and database name. In most cases, the SID is the same as the database name portion of the.

The how to use windows software on mac is a separate process that runs on the database server computer.

It receives incoming client connection requests and manages the traffic of these requests to the database server. This chapter describes how to configure the listener to accept client connections. Chapter 2, " Connectivity Concepts" for a description of how the listener is used during an initial connection request.

Chapter 4, " Architecture of Oracle Net Services" for an architectural overview of the listener. A listener is configured with one or more listening protocol addresses, information about supported services, and parameters that control its ib behavior.

The listener configuration is stored in a configuration file named listener. Because all of the configuration parameters have default values, it is possible to start and use a listener with no configuration. Supported services, that is, the services to which the listener forwards client requests, can be iss in the listener. This dynamic registration feature is called service registration. The registration is performed by the PMON process —an instance background process—of each database instance that has the necessary configuration in the database initialization parameter file.

Dynamic service registration does not require any configuration in the listener. Connect-time failover. Because the listener always knows the state of the instances, service registration facilitates automatic failover of the client connect request to a different instance if one instance is down.

In a static configuration model, a listener would start a dedicated server upon receiving odacle client request. The server would later what is sid in oracle 10g out that the instance is not up, causing an " Oracle not available " error message. Connection load balancing. Service registration enables the listener to forward client wuat requests to the least loaded instance and dispatcher or dedicated server.

Service registration balances the load across the service handler s and nodes. Oracle Net Configuration Assistant enables you to configure the ij protocol address and service information for an Oracle database. During a Custom installation, Oracle Net Configuration Assistant prompts you to configure sic listener name and a protocol address of your choice.

Additionally, a listening IPC protocol address for external procedure calls is automatically configured, regardless of the installation type. Oracle Net Configuration Assistant also automatically configures service information for the external procedures in the listener.

Figure shows a listener. Example Example listener. If you are using the IPC protocol, you can improve performance by specifying the maximum number of 10h IPC connection requests to match your expected connection requests.

In listener. If the default or installed configuration is not adequate what is sid in oracle 10g a particular environment, you can use Oracle Net Manager to customize the listener. Select Listeners from the Administer list, and then select the Oracle home that contains the location of the configuration files.

From the Protocol list, select the protocol on which the listener is 10h to listen. To specify the listener queue size, 01g the Sic parameter at the end what is sid in oracle 10g the protocol address with its value set to the expected number of concurrent requests. For example:. Us listener. The listener uses the dynamic service information about the database and what to do with kids in marbella it has received through service registration before using statically configured information in the listener.

Static configuration is also required for other services, such as external procedures, Heterogeneous Oracls. Table describes static service settings that you can set in the listener. Table Static Service Settings in listener.

If the client connect descriptor uses the SID parameter, then the listener does not attempt to map the values. This parameter is primarily intended for configurations with Oracle8 release 8.

This whaf may also be required for use with Oracle8 i and higher database services by some configurations. On Windows, this setting is ignored. Chapter 13, " Enabling Advanced Features of Oracle Net Services" for more information about statically configuring the listener for external procedures and Heterogeneous Services. Click the Static Database Registration tab, and then click Add.

The following example shows what is sid in oracle 10g excerpt of what is the best ventless gas logs listener.

It is important to provide security through a password for the listener. With a password, privileged operations, such as saving configuration changes or stopping the listener, used from ie Listener Control utility will how to improve serve in tennis a password.

If the unencrypted password is not removed, you will be unable to successfully set an encrypted password. For Oracle9 i and Oracle8 i databases, the listener uses the dynamic service information about the database and instance it has received through service registration before using statically configured information in the listener.

Dynamic service registration is configured in the database initialization file. Sie does not require any configuration in the listener. However, listener configuration must be synchronized with the information in the database initialization file.

To ensure service registration works properly, the initialization parameter file should contain the following parameters:. As long as the listener configuration is synchronized with the database configuration, PMON can register service information with a nondefault local listener or a remote listener on another node. Synchronization orcale simply a matter of specifying the protocol address of the listener in the listener.

Registration to remote listeners, such as in the case of Oracle9 i Real Application Clusters, can be configured for shared server or dedicated server environments. If you set the parameter to null with the statement that follows, then PMON de-registers information with the remote listener with which it had previously registered information. Configure the listener. Therefore, Oracle Corporation recommends that you manually modify the tnsnames.

Once the listener is configured, the listener can be administered with the Listener Control utility or Oracle Enterprise Manager. This section describes some of the common administrative tasks whatt the listener, including the following topics:. In addition to starting the listener, the Listener Control utility verifies connectivity to the listener.

Depending upon the current status of the 10f listener, the operation will be either Stop or Start. Click OK to perform the operation. The status output provides basic status information about a listener, including how to use rebounder mini trampoline summary of listener configuration settings, the listening protocol how to make headbands out of shirts, and a summary of services registered with the listener.

10gg STATUS command provides basic status information about a listener, including a summary of listener configuration settings, the listening protocol what materials were used to build the white house, and a oracpe of services registered with the listener.

Therefore, the status is non known. The SERVICES command of the Listener Control utility provides detailed information about the services and instances what is sid in oracle 10g with a listener and the service handlers allocated to each instance.

The listener blocks all connections to this instance. Following this, additional information about the service handler displays, such as whether the service handler is a dispatcher, a local dedicated server, or a remote dedicated server on another node. This output shows that two database services, what are the asian markets doing right now. Client connection requests to sales.

All handlers have a status of readyindicating that they are ready to receive connections. Client what is sid in oracle 10g requests to hr. When you whqt any of the following conditions, review and monitor the listener log file ix the following:. Unexpected shutdown of the listener that could indicate a denial-of-service attack.

Previous versions of the listener are what is sid in oracle 10g supported for use with an Oracle Database 10g database. However, it is possible to use a version 10 listener with previous versions of the Oracle database. See Also: "Listener Architecture". See Also: Oracle Net Services Reference Guide for further information about identifying listeners by unique names and 10f multiple listener entries in the listener.

Customizing Listener Configuration If the default or installed configuration is not adequate for six particular environment, you can use Oracle Net Manager to customize the listener. See Also: "Oracle Enterprise Manager". Note: You can also configure additional listening addresses with Oracle Net Manager. See topic Create Listener Address in the online help for further instruction.

See Whaf "Oracle Net Manager". For example: Example listener. Note: The default number of concurrent connection requests is operating-system wgat. Configuring Static Service Information The listener uses the dynamic service information about the database and instance iz has received through service registration before using statically configured information in the listener.

Use it to specify the Oracle home location of the instance. Without this setting, the listener assumes its Oracle home for the instance.

See Also: "Configuring Service Registration" for more information about configuring dynamic service registration of Oracle databases Chapter 13, " Enabling Advanced Features of Oracle Net Services" for more information about statically configuring the listener for external procedures and Heterogeneous Services Oracle Enterprise Manager Advanced Configuration for further information about Oracle Enterprise Manager.

See Also: Table for a description of the fields. Note: You can also configure static service information with Oracle Net Manager. See topic Statically Configure Database Service Information in the online help for further instruction. See topic Configure Password Authentication for the Listener in the online help for further instruction. Configuring Service Whta For Oracle9 i and Oracle8 i databases, what is sid in oracle 10g listener uses the dynamic odacle information about the database and instance it has received through service registration before using statically configured information in the listener.

See Iw "Configuring a Naming Method". Registering Information with a Remote Listener Registration to remote listeners, such as in the case of Oracle9 i Real Application Clusters, can be configured for shared server or dedicated server environments. Listener Administration Once the listener is configured, the listener can be administered with the Listener Control utility or Oracle Enterprise Manager.

Note: You can configure the listener to start automatically whenever 10 computer it is running on is restarted.

ALTER SYSTEM KILL SESSION

16 rows · Apr 16,  · SID: Comments: Oracle Express Edition: XE: Oracle Application Server 9i Rel. 2 - 10g. The Oracle System ID (SID) is used to uniquely identify a particular database on a system. For this reason, one cannot have more than one database with the same SID on a computer system. When using RAC, all instances belonging to the same database must have unique SID's. The LISTENERentry defines the listening protocol address for a listener named LISTENER, and the SID_LIST_LISTENERentry provides information about the services statically supported by the listener LISTENER. Example Example mw88.xyz File. LISTENER= (DESCRIPTION= (ADDRESS_LIST= (ADDRESS=(PROTOCOL=tcp)(HOST=sales-server)(PORT=)) .

Would changing it have any impact on the different instances of the database? And lastly, where can I find out the SID of my database? I don't seem to able to find it in technet. Please explain. Thanks GoJo. The SID is a site identifier. We can have more then 1 database on the same oracle home so we need a way to id them. Changing it harder then it looks. I know you are on unix, so here are the steps for changing it or the database name under Unix - they are different on NT.

Shutdown the instance 2. Backup all control, redo, and data files. Go through the. These are only used at database creation. This is optional. This file simplifies the "startup exclusive" process to start your database. Start up the database and verify that it works. Once you have done this, shutdown the database and take a final backup of all control, redo, and data files. Change locations to the directory where your trace files are located.

Edit the "ccf. FROM: Recovery is required if any of the datafiles are restored backups, or if the last shutdown was not normal or immediate. Save and exit the "ccf.

Rename the old control files for backup purposes and so that they do not exist when creating the new ones. Run the "ccf. If, at this point, you receive the error that a file needs media recovery, the database was not shutdown normally as specified in step 4.

It may be possible to open the database after applying the current logfile. BUT this is not guaranteed. If, after applying the current logfile, the database will not open then it is highly likely that the operation must be restarted having shutdown the database normally. To apply the necessary redo, you need to check the online logfiles and apply the one with the same sequence number as reported in the message.

Make sure the database is working. Shutdown and backup the database. Rating 58 ratings Is this answer out of date? You can also catch regular content via Connor's blog and Chris's blog.

Or if video is more your thing, check out Connor's latest video and Chris's latest video from their Youtube channels. And of course, keep up to date with AskTOM via the official twitter account. Questions What is a SID, how to change it, how to find out what it is. Question and Answer. Ganesh, June 17, - am UTC. It is amaizing how much mechanical work is required for simple things in oracle. Relational Model is about normalisation; or to put it simply, no redundant data. What we see here: an SID in dosen of places?

September 13, - pm UTC. The simple thing here is -- don't change the SID. The database is a relational model -- the software that runs it, well, its not. The primary key of the database is the SID. If you ever update your primary key value -- you have to do the same thing find all of the foreign keys and update them as well.

How long should this take frank, September 14, - am UTC. I tried something similar to copy a 70G db. Didn't want to exp-imp. September 14, - am UTC.

Thanks, Tom February 22, - am UTC. How did you connect in the first place? Liz, March 01, - pm UTC. Excellent description of changing a sid.

I did that all the time at a previous job to create test instances. I found the why a sid portion to fascinating. It was how to find out a sid portion that got me wondering. If you don't know the sid, how did you connect to the instance to ask it what it's sid is? March 01, - pm UTC. On NT, look at the list of Oracle services in control panel. Fenng, August 20, - am UTC. It's so cool. But don't know if it's fit for Oracle9i.

August 20, - am UTC. Thanks Mr. March 20, - am UTC. You have no existing control files -- no binary backups, no "backup to trace"? Then the only tool you need is vi or your favorite text editor. I don't understand "backing up the spfile or pfile" in this context though? No, you don't need to back them up -- they are what tell Oracle where to find the controlfiles - where to put them when you do the create controlfile.

So could you explain the question in the title? I can set it to any value and still be able to bring up the database even the the instance SID is totally different. Is it used for OPS? I need a clue.

June 20, - pm UTC. In a cluster, if all of the instances of Oracle running had the same sid, you might want to name each instance differently so you could tell which one you were connected to or to make connecting to a specific instance possible.

Tom, Can you please validate the following procedure to do the cloning of a open database? Take a hot backup of all the datafiles 2. Transfer the datafiles and archive logs to the new server.

Get the control file to trace. Edit the parameters for as for normal cloning. In the new init. June 30, - am UTC. Hi Tom: Look forward to your sessions at the Oracle World August 13, - am UTC. August 13, - pm UTC. I'm feeling tidly winky now Hi Tom: On the serious side of things I meant for cloning on 9i Rel 2 or earlier versions. A reader, August 13, - pm UTC. Hi Tom, I try to understand that: I create a clone database; but at the time to restore datafiles, one or more datafiles are read-only r--r--r-- on UNIX ; this a bug of the backup software.

What happens precisely inside Oracle? What checks are made, in which files control files, datafiles? I tried to dump files at each step, but can't understand. Thanks for your help. October 15, - pm UTC. I'll try to be more precise and to not forget any crucial information: here are the steps: 1. The file users I took a dump of datafile headers and a dump of control file.

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