Dynamic Performance (V$) Views, 29 of 238

V$CIRCUIT

V$CIRCUIT contains information about virtual circuits, which are user connections to the database through dispatchers and servers.

Column	Datatype	Description
`CIRCUIT`	`RAW(4 \| 8)`	Circuit address
`DISPATCHER`	`RAW(4 \| 8)`	Current dispatcher process address
`SERVER`	`RAW(4 \| 8)`	Current server process address
`WAITER`	`RAW(4 \| 8)`	Address of server process that is waiting for the (currently busy) circuit to become available
`SADDR`	`RAW(4 \| 8)`	Address of session bound to the circuit
`STATUS`	`VARCHAR2(16)`	Status of the circuit: `BREAK` - currently interrupted `EOF` - about to be removed `OUTBOUND` - an outward link to a remote database `NORMAL` - normal circuit into the local database
`QUEUE`	`VARCHAR2(16)`	Queue the circuit is currently on: `COMMON` - on the common queue, waiting to be picked up by a server process `DISPATCHER` - waiting for the dispatcher `SERVER` - currently being serviced `NONE` - idle circuit
`MESSAGE0`	`NUMBER`	Size in bytes of the messages in the first message buffer
`MESSAGE1`	`NUMBER`	Size in bytes of the messages in the second message buffer
`MESSAGE2`	`NUMBER`	Size in bytes of the messages in the third message buffer
`MESSAGE3`	`NUMBER`	Size in bytes of the messages in the fourth message buffer
`MESSAGES`	`NUMBER`	Total number of messages that have gone through this circuit
`BYTES`	`NUMBER`	Total number of bytes that have gone through this circuit
`BREAKS`	`NUMBER`	Total number of breaks (interruptions) for this circuit
`PRESENTATION`	`VARCHAR2(16)`	The presentation protocol used by the client and server