String 

MTS_DISPATCHERS = 'dispatch_clause' 

dispatch_clause::=

(PROTOCOL = protocol) |

(ADDRESS = address) |

(DESCRIPTION = description )

[options_clause]

options_clause::=

(DISPATCHERS = integer |

SESSIONS = integer |

CONNECTIONS = integer |

TICKS = seconds |

POOL = { 1 | ON | YES | TRUE | BOTH |

   ({IN|OUT} = ticks) | 0 | OFF | NO | FALSE |

   ticks} |

 MULTIPLEX = {1 | ON | YES | TRUE |

   0 | OFF |NO | FALSE | BOTH | IN | OUT} |

LISTENER = tnsname |

SERVICE = service |

INDEX = integer)

Dynamic. Scope = ALTER SYSTEM . 

None 

MAX_DISPATCHERS configures dispatcher processes in the multi-threaded server (MTS) architecture. The parsing software supports a name-value syntax to enable the specification of attributes in a position-independent case-insensitive manner. For example:

MTS_DISPATCHERS = "(PROTOCOL=TCP)(DISPATCHERS=3)"

ADDRESS (ADD or ADDR) 

is the network address (in Net8 syntax) of the end point which the dispatchers will listen on. (Includes the protocol.) 

DESCRIPTION (DES or DESC) 

is the network description (in Net8 syntax, including the protocol) of the end point on which the dispatchers will listen. 

PROTOCOL (PRO or PROT) 

is the network protocol for which the dispatchers will generate a listening end point. 

DISPATCHERS (DIS or DISP) 

is an integer specifying the initial number of dispatchers to start. Default is 1. 

SESSIONS (SES or SESS) 

specifies the maximum number of network sessions to allow for each dispatcher. The default is set by Net8 and is platform specific. 

CONNECTIONS (CON or CONN)  

is an integer specifying the maximum number of network connections to allow for each dispatcher. The default is set by Net8 and is platform specific. 

TICKS (TIC or TICK) 

specifies the size of a network tick in seconds. The default is set by Net8 and is platform specific. 

POOL (POO) 

enables the Net8 "Connection Pooling" feature.

• An integer indicates that Connection Pooling is enabled for both incoming and outgoing network connections. The number specified is the timeout in ticks for both incoming and outgoing network connections.

• ON, YES, TRUE, and BOTH indicate that Connection Pooling is enabled for both incoming and outgoing network connections. The default timeout (set by Net8) will be used for both incoming and outgoing network connections.

• IN indicates that Connection Pooling is enabled for incoming network connections. The default timeout (set by Net8) will be used for incoming network connections.

• OUT indicates that Connection Pooling is enabled for outgoing network connections. The default timeout (set by Net8) will be used for outgoing network connections.

• NO, OFF, and FALSE indicate that Connection Pooling is disabled for both incoming and outgoing network connections. This is the default.

MULTIPLEX

(MUL or MULT)  

enables the Net8 "Network Session Multiplex" feature.

• The values 1, ON, YES, TRUE, and BOTH indicate that Network Session Multiplex is enabled for both incoming and outgoing network connections.

• The value IN indicates that Network Session Multiplex is enabled for incoming network connections.

• The value OUT indicates that Network Session Multiplexing is enabled for outgoing network connections.

• The values 0, NO, OFF, and FALSE indicate that Network Session Multiplexing is disabled for both incoming and outgoing network connections. This is the default.

LISTENER

(LIS, LIST)  

specifies the network name of an address or address list of the Net8 listeners with which the dispatchers will register.

The LISTENER attribute facilitates administration of multi-homed hosts. This attribute specifies the appropriate listeners with which the dispatchers will register. The LISTENER attribute overrides the LOCAL_LISTENER parameter. See "LOCAL_LISTENER". 

POOL can also be assigned a name-value string such as: "(IN=10)", "(OUT=20)", or "(IN=10)(OUT=20)". In such cases:

• If an IN numeric value is specified, then Connection Pooling is enabled for incoming connections, and the number specified is the timeout in ticks for incoming network connections.

• If an OUT numeric value is specified, then Connection Pooling is enabled for outgoing network connections, and the number specified is the timeout in ticks for outgoing network connections.

• If the numeric value of a specified timeout is 0 or 1, then the default value (set by Net8) will be used.

SERVICE (SER, SERV)  

specifies the service name which the dispatchers register with the Net8 listeners. 

INDEX 

Use this parameter in an ALTER SYSTEM SET MTS_DISPATCHER statement to indicate which dispatcher you want to modify. (If you specify INDEX in the initialization parameter file, Oracle ignores it.) In an ALTER SYSTEM statement, INDEX specifies the order in which the parameter's values were initialized. The value ranges from 0 (for the first dispatcher process) to 1 less than the total number of dispatchers you define.  

For example, if you specify 3 dispatchers in the initialization parameter file, you would modify the third dispatcher by specify INDEX=2 in the ALTER SYSTEM statement. You could also add an additional dispatcher in the ALTER SYSTEM statement by specifying INDEX=3. 

See Also: Net8 Administrator's Guide for more information on setting this parameter.