V$LOGMNR_PROCESS

V$LOGMNR_PROCESS identifies all processes attached to an active LogMiner persistent session. (A persistent LogMiner session is created either by starting Data Guard SQL Apply on a logical standby database for the first time or by creating Streams capture.) This view can be joined with either the V$SESSION view or the V$PROCESS view to gather process-specific information.

Column	Datatype	Description
`SESSION_ID`	`NUMBER`	Unique identifier for the LogMiner persistent session
`PID`	`NUMBER`	Oracle process identifier for the SQL Apply or Streams capture process (same as the `V$PROCESS.PID`)
`SPID`	`VARCHAR2(12)`	Operating system process identifier (same as the `V$PROCESS.SPID`)
`ROLE`	`VARCHAR2(32)`	Identifies the role of the active LogMiner process: `READER`, `PREPARER`, `BUILDER`, `COORDINATOR`, or `APPLY SERVER`
`USERNAME`	`VARCHAR2(15)`	Operating system process user name that is connected to the database
`SID`	`NUMBER`	Session identifier for the `V$SESSION.SID` process
`SERIAL#`	`NUMBER`	Session serial number associated with the `V$SESSION.SERIAL` process
`LATCHWAIT`	`VARCHAR2(8)`	Address of the latch the process is waiting for; `NULL` if none
`LATCHSPIN`	`VARCHAR2(8)`	Address of the latch the process is spinning on; `NULL` if none
`WORK_MICROSEC`	`VARCHAR2(21)`	Microseconds spent by the process doing useful work
`OVERHEAD_MICROSEC`	`VARCHAR2(21)`	Microseconds spent by the process doing overhead tasks or simply waiting/idling