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Results for DISPATCHERS


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Database Reference, 12c Release 1 (12.1)

DISPATCHERS

1.85 DISPATCHERSProperty Description Parameter type String Syntax DISPATCHERS = ' dispatch_clause ' Syntax … ) [options_clause] Syntax options_clause::= (DISPATCHERS = integer | SESSIONS = integer | CONNECTIONS = integer … DISPATCHERS defaults to '(PROTOCOL=tcp)', causing 1 TCP/IP dispatcher to be created. Modifiable ALTER SYSTEM … Modifiable

Database Administrator's Guide, 12c Release 1 (12.1)

Managing Processes

5.3.4 Configuring Dispatchersby the DISPATCHERS initialization parameter and system resources. To protect shared memory by … initialization parameter. 5.3.4 Configuring Dispatchers The DISPATCHERS initialization parameter configures … protocol. The equivalent DISPATCHERS explicit setting of the initialization parameter for this … configuration

Database Net Services Administrator's Guide, 12c Release 1 (12.1)

Identifying and Accessing the Database

About Dispatchersuses direct hand off whenever possible. Redirect messages are used, for example, when dispatchers are

Database Net Services Administrator's Guide, 12c Release 1 (12.1)

Configuring a Shared Server Architecture

Monitoring DispatchersUse the following views to check configurations and monitor dispatchers: V$QUEUE: Contains … index number. V$DISPATCHER_CONFIG: Provides configuration information about the dispatchers. V … Reference for additional information about configuring the DISPATCHERS parameter and supported

Database Net Services Administrator's Guide, 12c Release 1 (12.1)

Configuring a Shared Server Architecture

About DispatchersShared memory resources for dispatchers, virtual circuits, and shared servers are preconfigured … enable shared servers at runtime. Database administrators can start dispatchers and shared servers with … turned on, a dispatcher is started automatically on the TCP/IP protocol even if the DISPATCHERS … parameter has not been set.

Database Administrator's Guide, 12c Release 1 (12.1)

Managing Processes

5.3.5 Disabling Shared Server5.3.4.2 Determining the Number of Dispatchers Once you know the number of possible connections for … each process for the operating system, calculate the initial number of dispatchers to create during … instance startup, for each network protocol. To calculate the initial number of dispatchers to … create during instance startup,

Database Administrator's Guide, 12c Release 1 (12.1)

Managing Processes

Attribute Description5.3.4.1 DISPATCHERS Initialization Parameter Attributes You can set several attributes for the … DISPATCHERS initialization parameter. A protocol address is required and is specified using one or more … the endpoint on which the dispatchers listen. DESCRIPTION Specify the network description of the … endpoint on which the dispatchers

Database Administrator's Guide, 12c Release 1 (12.1)

Managing Processes

5.3.3 Enabling Shared ServerDispatchers are discussed in \" Configuring Dispatchers \". Note: If SHARED_SERVERS is not included in … the initialization parameter file at database startup, but DISPATCHERS is included and it specifies … . If neither SHARED_SERVERS nor DISPATCHERS is included in the initialization file, you cannot start

Database Administrator's Guide, 12c Release 1 (12.1)

Managing Processes

5.3.6 Shared Server Data Dictionary Views$DISPATCHER_CONFIG Provides configuration information about the dispatchers. V$DISPATCHER_RATE Provides rate … virtual circuits, which are user connections to the database through dispatchers and servers. V

Database Administrator's Guide, 12c Release 1 (12.1)

Managing Processes

5.3.1 Initialization Parameters for Shared Serverdedicated servers. DISPATCHERS: Configures dispatcher processes in the shared server architecture … dispatchers is auto-tuned according to the number of concurrent connections. CIRCUITS: Specifies

Database Reference, 12c Release 1 (12.1)

alter system set dispatcher

C.3.1 alter system set dispatcherdispatchers to get started. Wait Time: The session will wait 1 / 100 of a second and verify if the new … dispatchers have started, else the session will wait again Parameter Description waited Number of times that the session has waited 1 / 100 of a second

Database Performance Tuning Guide, 12c Release 1 (12.1)

Configuring a Database for Performance

Identifying and Reducing Contention Using the Dispatcher-Specific Viewsconsider reducing the number of dispatchers. Conversely, if current and average rates are close to the … maximums, then you might need to add more dispatchers. A general rule is to examine V$DISPATCHER_RATE … maximized, it is not necessarily a good idea to immediately add more dispatchers. Instead, consider … multiple users to

Database Reference, 12c Release 1 (12.1)

V$DISPATCHER_CONFIG

7.155 V$DISPATCHER_CONFIG… Column Datatype Description CONF_INDX NUMBER Zero-based index of the DISPATCHERS configuration … NETWORK VARCHAR2(1024) Network protocol or listening address of dispatchers (may be truncated … ) DISPATCHERS NUMBER Number of dispatchers to maintain for the configuration CONNECTIONS NUMBER Maximum number

Database Reference, 12c Release 1 (12.1)

MAX_DISPATCHERS

1.151 MAX_DISPATCHERSgreater than or equal to the number of dispatchers specified by the DISPATCHERS parameter and less … overridden by the DISPATCHERS parameter and is maintained for backward compatibility with older releases

Database Concepts, 12c Release 1 (12.1)

Application and Networking Architecture

Shared Server Architecturedispatchers or dedicated servers (the listener is part of Oracle Net Services, not Oracle Database

Database Upgrade Guide, 12c Release 1 (12.1)

Deprecated and Desupported Features for Oracle Database 12c

8.6.1 Desupport of Oracle Net Connection Poolingconnection pooling was deprecated in Oracle Database 11 g. This includes the DISPATCHERS attributes TICKS

Database Concepts, 12c Release 1 (12.1)

Application and Networking Architecture

The listener registration process LREG registers information about the database instance and dispatcher…its current and maximum load Service handlers (dispatchers and dedicated servers) available for the

Database Administrator's Guide, 12c Release 1 (12.1)

Creating and Configuring an Oracle Database

The alert log is an XML file that is a chronological log of messages and errors.' db_recovery_file_dest_size=2G diagnostic_dest='' dispatchers='(PROTOCOL=TCP) (SERVICE=ORCLXDB)' open_cursors=300

Database Concepts, 12c Release 1 (12.1)

Application and Networking Architecture

The PGA is memory specific to an operating process or thread that is not shared by other processes or…Net Services Administrator's Guide to learn how to configure dispatchers Shared Server Processes (S

Database Error Messages, 12c Release 1 (12.1)

ORA-00000 to ORA-00877

ORA-00134: invalid DISPATCHERS specification # stringCause: The syntax for the n-th DISPATCHERS specification was incorrect. Action: Refer to the Oracle Reference Manual for the correct syntax.