sp_addpublication_snapshot (Transact-SQL)

Creates the Snapshot Agent for the specified publication. This stored procedure is executed at the Publisher on the publication database.

Security Note
When configuring a Publisher with a remote Distributor, the values supplied for all parameters, including job_login and job_password, are sent to the Distributor as plain text. You should encrypt the connection between the Publisher and its remote Distributor before executing this stored procedure. For more information, see Encrypting Connections to SQL Server.

Transact-SQL Syntax Conventions

Syntax

sp_addpublication_snapshot [ @publication= ] 'publication'
    [ , [ @frequency_type= ] frequency_type ]
    [ , [ @frequency_interval= ] frequency_interval ]
    [ , [ @frequency_subday= ] frequency_subday ]
    [ , [ @frequency_subday_interval= ] frequency_subday_interval ]
    [ , [ @frequency_relative_interval= ] frequency_relative_interval ]
    [ , [ @frequency_recurrence_factor= ] frequency_recurrence_factor ]
    [ , [ @active_start_date= ] active_start_date ]
    [ , [ @active_end_date= ] active_end_date ]
    [ , [ @active_start_time_of_day= ] active_start_time_of_day ]
    [ , [ @active_end_time_of_day= ] active_end_time_of_day ]
    [ , [ @snapshot_job_name = ] 'snapshot_agent_name' ]
    [ , [ @publisher_security_mode = ] publisher_security_mode ]
    [ , [ @publisher_login = ] 'publisher_login' ]
    [ , [ @publisher_password = ] 'publisher_password' ] 
    [ , [ @job_login = ] 'job_login' ]
    [ , [ @job_password = ] 'job_password' ]
    [ , [ @publisher = ] 'publisher' ]

Arguments

• [ @publication=] 'publication'
  Is the name of the publication. publication is sysname, with no default.

• [ @frequency_type=] frequency_type
  Is the frequency with which the Snapshot Agent is executed. frequency_type is int, and can be one of the following values.

  Value	Description
  1	Once.
  4 (default)	Daily.
  8	Weekly.
  16	Monthly.
  32	Monthly, relative to the frequency interval.
  64	When SQL Server Agent starts.
  128	Run when the computer is idle

• [ @frequency_interval=] frequency_interval
  Is the value to apply to the frequency set by frequency_type. frequency_interval is int, and can be one of the following values.

  Value of frequency_type	Effect on frequency_interval
  1	frequency_interval is unused.
  4 (default)	Every frequency_interval days, with a default of daily.
  8	frequency_interval is one or more of the following (combined with a | (Bitwise OR) logical operator): 1 = Sunday | 2 = Monday | 4 = Tuesday | 8 = Wednesday | 16 = Thursday | 32 = Friday | 64 = Saturday
  16	On the frequency_interval day of the month.
  32	frequency_interval is one of the following: 1 = Sunday | 2 = Monday | 3 = Tuesday | 4 = Wednesday | 5 = Thursday | 6 = Friday | 7 = Saturday | 8 = Day | 9 = Weekday | 10 = Weekend day
  64	frequency_interval is unused.
  128	frequency_interval is unused.

• [ @frequency_subday=] frequency_subday
  Is the unit for freq_subday_interval. frequency_subday is int, and can be one of these values.

  Value	Description
  1	Once
  2	Second
  4 (default)	Minute
  8	Hour

• [ @frequency_subday_interval=] frequency_subday_interval
  Is the interval for frequency_subday. frequency_subday_interval is int, with a default of 5, which means every 5 minutes.

• [ @frequency_relative_interval=] frequency_relative_interval
  Is the date the Snapshot Agent runs. frequency_relative_interval is int, with a default of 1.

• [ @frequency_recurrence_factor=] frequency_recurrence_factor
  Is the recurrence factor used by frequency_type. frequency_recurrence_factor is int, with a default of 0.

• [ @active_start_date=] active_start_date
  Is the date when the Snapshot Agent is first scheduled, formatted as YYYYMMDD. active_start_date is int, with a default of 0.

• [ @active_end_date=] active_end_date
  Is the date when the Snapshot Agent stops being scheduled, formatted as YYYYMMDD. active_end_date is int, with a default of 99991231, which means December 31, 9999.

• [ @active_start_time_of_day=] active_start_time_of_day
  Is the time of day when the Snapshot Agent is first scheduled, formatted as HHMMSS. active_start_time_of_day is int, with a default of 0.

• [ @active_end_time_of_day=] active_end_time_of_day
  Is the time of day when the Snapshot Agent stops being scheduled, formatted as HHMMSS. active_end_time_of_day is int, with a default of 235959, which means 11:59:59 P.M. as measured on a 24-hour clock.

• [ @snapshot_job_name = ] 'snapshot_agent_name'
  Is the name of an existing Snapshot Agent job name if an existing job is being used. snapshot_agent_name is nvarchar(100) with a default value of NULL. This parameter is for internal use and should not be specified when creating a new publication. If snapshot_agent_name is specified, then job_login and job_password must be NULL.

• [ @publisher_security_mode= ] publisher_security_mode
  Is the security mode used by the agent when connecting to the Publisher. publisher_security_mode is smallint, with a default of 1. 0 specifies SQL Server Authentication, and 1 specifies Windows Authentication. A value of 0 must be specified for non-SQL Server Publishers. When possible, use Windows Authentication.

• [ @publisher_login= ] 'publisher_login'
  Is the login used when connecting to the Publisher. publisher_login is sysname, with a default of NULL. publisher_login must be specified when publisher_security_mode is 0. If publisher_login is NULL and publisher_security_mode is 1, then the Windows account specified in job_login will be used when connecting to the Publisher.

• [ @publisher_password= ] 'publisher_password'
  Is the password used when connecting to the Publisher. publisher_password is sysname, with a default of NULL.

  Security Note
  Do not store authentication information in script files. To help improve security, we recommend that you provide login names and passwords at run time.

• [ @job_login= ] 'job_login'
  Is the login for the Windows account under which the agent runs. job_login is nvarchar(257), with a default of NULL. This Windows account is always used for agent connections to the Distributor. You must supply this parameter when creating a new Snapshot Agent job.

  Note

  For non-SQL Server Publishers, this must be the same login specified in sp_adddistpublisher (Transact-SQL).

• [ @job_password= ] 'job_password'
  Is the password for the Windows account under which the agent runs. job_password is sysname, and it has a default of NULL. You must supply this parameter when creating a new Snapshot Agent job. If job_password is NULL and the user who creates the snapshot is sysadmin, the parameter will default to the account under which SQL Server Agent runs.

  Security Note
  Do not store authentication information in script files. To help improve security, we recommend that you provide login names and passwords at run time.

• [ @publisher= ] 'publisher'
  Specifies a non-SQL Server Publisher. publisher is sysname, with a default of NULL.

  Note

  publisher should not be used when creating a Snapshot Agent at a SQL Server Publisher.

Return Code Values

0 (success) or 1 (failure)

Remarks

sp_addpublication_snapshot is used in snapshot replication, transactional replication, and merge replication.

Example

-- To avoid storing the login and password in the script file, the values 
-- are passed into SQLCMD as scripting variables. For information about 
-- how to use scripting variables on the command line and in SQL Server
-- Management Studio, see the "Executing Replication Scripts" section in
-- the topic "Programming Replication Using System Stored Procedures".

DECLARE @publicationDB AS sysname;
DECLARE @publication AS sysname;
DECLARE @login AS sysname;
DECLARE @password AS sysname;
SET @publicationDB = N'AdventureWorks'; 
SET @publication = N'AdvWorksProductTran'; 
-- Windows account used to run the Log Reader and Snapshot Agents.
SET @login = $(Login); 
-- This should be passed at runtime.
SET @password = $(Password); 

-- Enable transactional or snapshot replication on the publication database.
EXEC sp_replicationdboption 
    @dbname=@publicationDB, 
    @optname=N'publish',
    @value = N'true';

-- Execute sp_addlogreader_agent to create the agent job. 
EXEC sp_addlogreader_agent 
    @job_login = @login, 
    @job_password = @password,
    -- Explicitly specify the use of Windows Integrated Authentication (default) 
    -- when connecting to the Publisher.
    @publisher_security_mode = 1;

-- Create a new transactional publication with the required properties. 
EXEC sp_addpublication 
    @publication = @publication, 
    @status = N'active',
    @allow_push = N'true',
    @allow_pull = N'true',
    @independent_agent = N'true';

-- Create a new snapshot job for the publication, using a default schedule.
EXEC sp_addpublication_snapshot 
    @publication = @publication, 
    @job_login = @login, 
    @job_password = @password,
    -- Explicitly specify the use of Windows Integrated Authentication (default) 
    -- when connecting to the Publisher.
    @publisher_security_mode = 1;
GO

Permissions

Only members of the sysadmin fixed server role or db_owner fixed database role can execute sp_addpublication_snapshot.

See Also

Tasks

How to: Create a Publication (Replication Transact-SQL Programming)

Reference

sp_addpublication (Transact-SQL)

sp_changepublication_snapshot (Transact-SQL)

sp_startpublication_snapshot (Transact-SQL)

Replication Stored Procedures (Transact-SQL)

Concepts

Creating and Applying the Snapshot