DB2 Version 10.1 for Linux, UNIX, and Windows

SNAPFCM_PART administrative view and SNAP_GET_FCM_PART table function - Retrieve the fcm_node logical data group snapshot information

The SNAPFCM_PART administrative view and the SNAP_GET_FCM_PART table function return information about the fast communication manager from a database manager snapshot, in particular, the fcm_node logical data group.

Depending on if you are using the administrative view or the table function, refer to one of the following sections:

SNAPFCM_PART administrative view
SNAP_GET_FCM_PART table function

SNAPFCM_PART administrative view

Used with the SNAPDBM, SNAPDBM_MEMORY_POOL, SNAPFCM and SNAPSWITCHES administrative views, the SNAPFCM_PART administrative view provides the data equivalent to the GET SNAPSHOT FOR DBM command.

The schema is SYSIBMADM.

Refer to Table 1 for a complete list of information that can be returned.

Authorization

One of the following authorizations is required to use the view:

SELECT privilege on the SNAPFCM_PART administrative view
CONTROL privilege on the SNAPFCM_PART administrative view
DATAACCESS authority
DBADM authority
SQLADM authority

One of the following is required to use the table function:

EXECUTE privilege on the SNAP_GET_FCM_PART table function
DATAACCESS authority
DBADM authority
SQLADM authority

In addition, to access snapshot monitor data, one of the following authorities is also required:

SYSMON
SYSCTRL
SYSMAINT
SYSADM

Default PUBLIC privilege

In a non-restrictive database, SELECT privilege is granted to PUBLIC when the view is automatically created.

Example

Retrieve buffers sent and received information for the fast communication manager.

SELECT CONNECTION_STATUS, TOTAL_BUFFERS_SENT, TOTAL_BUFFERS_RECEIVED 
   FROM SYSIBMADM.SNAPFCM_PART WHERE MEMBER = 0

The following is an example of output from this query.

CONNECTION_STATUS    TOTAL_BUFFERS_SENT   TOTAL_BUFFERS_RCVD
-------------------- -------------------- --------------------
INACTIVE                                2                    1

  1 record(s) selected.

SNAP_GET_FCM_PART table function

The SNAP_GET_FCM_PART table function returns the same information as the SNAPFCM_PART administrative view, but allows you to retrieve the information for a specific database member, aggregate of all database members or all database members.

Used with the SNAP_GET_DBM, SNAP_GET_DBM_MEMORY_POOL, SNAP_GET_FCM and SNAP_GET_SWITCHES table functions, the SNAP_GET_FCM_PART table function provides the data equivalent to the GET SNAPSHOT FOR DBM command.

Refer to Table 1 for a complete list of information that can be returned.

Syntax


>>-SNAP_GET_FCM_PART--(--+--------+--)-------------------------><
                         '-member-'

The schema is SYSPROC.

Table function parameter

member: An optional input argument of type INTEGER that specifies a valid database member number. Specify -1 for the current member. If this input option is not used, data will be returned from all active database members. An active database member is a member where the database is available for connection and use by applications.

If member is set to NULL, an attempt is made to read data from the file created by SNAP_WRITE_FILE procedure. Note that this file could have been created at any time, which means that the data might not be current. If a file with the corresponding snapshot API request type does not exist, then the SNAP_GET_FCM_PART table function takes a snapshot for the currently connected database and member.

Authorization

One of the following authorizations is required:

EXECUTE privilege on the SNAP_GET_FCM_PART table function
DATAACCESS authority

In addition, to access snapshot monitor data, one of the following authorities is also required:

SYSMON
SYSCTRL
SYSMAINT
SYSADM

Default PUBLIC privilege

In a non-restrictive database, EXECUTE privilege is granted to PUBLIC when the function is automatically created.

Example

Retrieve buffers sent and received information for the fast communication manager for all members.

SELECT FCM_MEMBER, TOTAL_BUFFERS_SENT, TOTAL_BUFFERS_RCVD, 
   MEMBER FROM TABLE(SNAP_GET_FCM_PART()) AS T 
   ORDER BY MEMBER

The following is an example of output from this query.

FCM_MEMBER TOTAL_BUFFERS_SENT   TOTAL_BUFFERS_RCVD   MEMBER
---------- -------------------- -------------------- ------
         0                  305                  305      0
         1                 5647                 1664      0
         2                 5661                 1688      0
         0                   19                   19      1
         1                  305                  301      1
         2                 1688                 5661      1
         0                 1664                 5647      2
         1                   10                   10      2
         2                  301                  305      2

Information returned

Table 1. Information returned by the SNAPFCM_PART administrative view and the SNAP_GET_FCM_PART table function
Column name	Data type	Description or corresponding monitor element
SNAPSHOT_TIMESTAMP	TIMESTAMP	The date and time that the snapshot was taken.
CONNECTION_STATUS	VARCHAR(10)	connection_status - Connection status . This interface returns a text identifier based on the defines in sqlmon.h and is one of: `INACTIVE` `ACTIVE` `CONGESTED`
TOTAL_BUFFERS_SENT	BIGINT	total_buffers_sent - Total FCM buffers sent
TOTAL_BUFFERS_RCVD	BIGINT	total_buffers_rcvd - Total FCM buffers received
DBPARTITIONNUM	SMALLINT	dbpartitionnum - Database partition number monitor element
FCM_DBPARTITIONNUM	SMALLINT	The database partition number to which data was sent or from which data was received (as per the TOTAL_BUFFERS_SENT and TOTAL_BUFFERS_RCVD columns).
MEMBER	SMALLINT	member - Database member monitor element
FCM_MEMBER	SMALLINT	The member to which data was sent or from which data was received (as per the TOTAL_BUFFERS_SENT and TOTAL_BUFFERS_RCVD columns).