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EnumLogReaderAgentSessions2 Method

This feature will be removed in a future version of Microsoft SQL Server. Avoid using this feature in new development work, and plan to modify applications that currently use this feature.

The EnumLogReaderAgentSessions2 method returns a QueryResults object that enumerates execution status data for the Log Reader Agent specified.



object
.EnumLogReaderAgentSessions2(
AgentName
,
SessionType
, 
SessionDuration
,
lEstimatedNumRecords
)
as 
QueryResults

object

Expression that evaluates to an object in the Applies To list.

AgentName

String that identifies a Log Reader Agent by name.

SessionType

Long integer that indicates session type as described in Settings.

SessionDuration

Long integer that specifies a number of hours. Restricts result set membership to those sessions launched within the number of hours specified. Use 0 to specify no restriction on agent session start time.

lEstimatedNumRecords

Long integer that specifies the estimated number of QueryResults rows to return.

HRESULT EnumLogReaderAgentSessions2(
SQLDMO_LPCSTR AgentName,
SQLDMO_SESSION_TYPE SessionType,
long SessionDuration,
long lEstimatedNumRecords,
LPSQLDMOQUERYRESULTS* ppResults);

Set SessionType using these values.

Constant Value Description

SQLDMOSession_All

1

Output contains log information for all sessions for agent.

SQLDMOSession_Errors

2

Output contains log information only for those execution attempts ending in error.

A QueryResults object that contains one result set defined by these columns.

Column Data type Description

runstatus

integer

Executing state. Interpret using SQLDMO_TASKSTATUS_TYPE.

start_time

nvarchar(26)

Date and time of last scheduled execution.

time

nvarchar(26)

Date and time of message logging.

comments

nvarchar(256)

Descriptive text.

duration

integer

Elapsed time of the session in seconds.

delivery_rate

float

Average number of commands delivered per second.

delivery_latency

integer

Latency, in milliseconds, between the Publisher committing a transaction and that transaction entering the distribution database.

delivery_time

integer

Cumulative time measurement for delivery in seconds.

delivered_/transactions

integer

Cumulative number of transactions delivered in the session.

delivered_commands

integer

Cumulative number of commands delivered in the session.

average_commands

integer

Average number of commands per transaction delivered in the session.

action_count

integer

Number of session history records.

error_id

integer

When nonzero, Microsoft SQL Server error message number.

In the result set, date and time data returned in start_time and time is formatted as YYYYMMDD hh:mm:ss.fff.

Date part Description

YYYY

Represents the year in four digits.

MM

Represents the month in two digits (zero padded).

DD

Represents the day of the month in two digits (zero padded).

hh

Represents the hour using two digits, a twenty-four hour clock (zero padded).

mm

Represents the minute in two digits (zero padded).

ss

Represents the second in two digits (zero padded).

fff

Represents the fractional part of the second in three digits.

For example, the value 20040512 18:12:00.000 is interpreted as 6:12 P.M., May 12, 2004.

The EnumLogReadAgentSessions2 method differs from the EnumLogReaderAgentSessions method by including the lEstimatedNumRecords parameter, which allows the application to pass an estimated number of QueryResults rows. This allows an application to avoid the performance overhead associated with repeatedly allocating and freeing memory.

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