DB2 Version 9.7 for Linux, UNIX, and Windows

SNAPTBSP_RANGE administrative view and SNAP_GET_TBSP_RANGE table function - Retrieve range snapshot information

The SNAPTBSP_RANGE administrative view and the SNAP_GET_TBSP_RANGE table function return information from a range snapshot.

SNAPTBSP_RANGE administrative view

This administrative view allows you to retrieve range snapshot information for the currently connected database.

Used with the SNAPTBSP, SNAPTBSP_PART, SNAPTBSP_QUIESCER and SNAPCONTAINER administrative views, the SNAPTBSP_RANGE administrative view provides information equivalent to the GET SNAPSHOT FOR TABLESPACES ON database-alias CLP 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:

SELECT privilege on the SNAPTBSP_RANGE administrative view
CONTROL privilege on the SNAPTBSP_RANGE administrative view
DATAACCESS authority

In addition, one of the following privileges or authorities is also required:

EXECUTE privilege on the SNAP_GET_TBSP_RANGE table function
DATAACCESS authority

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

SYSMON
SYSCTRL
SYSMAINT
SYSADM

Example

Select information about table space ranges for all database partitions for the currently connected database.

SELECT TBSP_ID, SUBSTR(TBSP_NAME, 1, 15) AS TBSP_NAME, RANGE_NUMBER, 
   RANGE_STRIPE_SET_NUMBER, RANGE_OFFSET, RANGE_MAX_PAGE, 
   RANGE_MAX_EXTENT, RANGE_START_STRIPE, RANGE_END_STRIPE, 
   RANGE_ADJUSTMENT, RANGE_NUM_CONTAINER, RANGE_CONTAINER_ID, 
   DBPARTITIONNUM FROM SYSIBMADM.SNAPTBSP_RANGE 
   ORDER BY DBPARTITIONNUM

The following example is a sample output from this query.

TBSP_ID     TBSP_NAME       RANGE_NUMBER     RANGE_STRIPE_SET_NUMBER ...
-------...- --------------- ------------...- ----------------------- ...
          0 SYSCATSPACE                    0                       0 ...
          2 USERSPACE1                     0                       0 ...
          3 SYSTOOLSPACE                   0                       0 ...
          2 USERSPACE1                     0                       0 ...
          2 USERSPACE1                     0                       0 ...

  5 record(s) selected.

Output from this query (continued).

... RANGE_OFFSET     RANGE_MAX_PAGE       RANGE_MAX_EXTENT     ... 
... ------------...- -------------------- -------------------- ... 
...                0                11515                 2878 ... 
...                0                  479                   14 ... 
...                0                  251                   62 ... 
...                0                  479                   14 ... 
...                0                  479                   14 ...

Output from this query (continued).

... RANGE_START_STRIPE   RANGE_END_STRIPE     RANGE_ADJUSTMENT     ...
... -------------------- -------------------- -------------------- ...
...                    0                 2878                    0 ...
...                    0                   14                    0 ...
...                    0                   62                    0 ...
...                    0                   14                    0 ...
...                    0                   14                    0 ...

Output from this query (continued).

... RANGE_NUM_CONTAINER  RANGE_CONTAINER_ID   DBPARTITIONNUM  
... -------------------- -------------------- --------------  
...                    1                    0              0  
...                    1                    0              0  
...                    1                    0              0  
...                    1                    0              1  
...                    1                    0              2

SNAP_GET_TBSP_RANGE table function

The SNAP_GET_TBSP_RANGE table function returns the same information as the SNAPTBSP_RANGE administrative view, but allows you to retrieve the information for a specific database on a specific database partition, aggregate of all database partitions or all database partitions.

Used with the SNAP_GET_TBSP_V91, SNAP_GET_TBSP_PART_V91, SNAP_GET_TBSP_QUIESCER and SNAP_GET_CONTAINER_V91 table functions, the SNAP_GET_TBSP_RANGE table function provides information equivalent to the GET SNAPSHOT FOR TABLESPACES ON database-alias CLP command.

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

Syntax


>>-SNAP_GET_TBSP_RANGE--(--dbname--+------------------+--)-----><
                                   '-, dbpartitionnum-'

The schema is SYSPROC.

Table function parameters

dbname: An input argument of type VARCHAR(128) that specifies a valid database name in the same instance as the currently connected database. Specify a database name that has a directory entry type of either "Indirect" or "Home", as returned by the LIST DATABASE DIRECTORY command. Specify NULL or empty string to take the snapshot from the currently connected database.
dbpartitionnum: An optional input argument of type INTEGER that specifies a valid database partition number. Specify -1 for the current database partition, or -2 for an aggregate of all active database partitions. If dbname is not set to NULL and dbpartitionnum is set to NULL, -1 is set implicitly for dbpartitionnum. If this input option is not used, that is, only dbname is provided, data is returned from all active database partitions. An active database partition is a partition where the database is available for connection and use by applications.

If both dbname and dbpartitionnum are 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_TBSP_RANGE table function takes a snapshot for the currently connected database and database partition number.

Authorization

One of the following authorizations is required:

EXECUTE privilege on the SNAP_GET_TBSP_RANGE table function
DATAACCESS authority

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

SYSMON
SYSCTRL
SYSMAINT
SYSADM

Examples

Select information about the table space range for the table space with tbsp_id = 2 on the currently connected database partition.

SELECT TBSP_ID, SUBSTR(TBSP_NAME, 1, 15) AS TBSP_NAME, RANGE_NUMBER, 
   RANGE_STRIPE_SET_NUMBER, RANGE_OFFSET, RANGE_MAX_PAGE, RANGE_MAX_EXTENT, 
   RANGE_START_STRIPE, RANGE_END_STRIPE, RANGE_ADJUSTMENT, 
   RANGE_NUM_CONTAINER, RANGE_CONTAINER_ID 
   FROM TABLE(SNAP_GET_TBSP_RANGE('',-1)) AS T WHERE TBSP_ID = 2

The following example is a sample output from this query.

TBSP_ID     TBSP_NAME       RANGE_NUMBER     ...      
-------...- --------------- ------------...- ...      
          2 USERSPACE1                     0 ...      

  1 record(s) selected.

Output from this query (continued).

... RANGE_STRIPE_SET_NUMBER RANGE_OFFSET     RANGE_MAX_PAGE        ...
... ----------------------- ------------...- --------------...---- ...
...                       0                0                  3967 ...

Output from this query (continued).

... RANGE_MAX_EXTENT     RANGE_START_STRIPE   RANGE_END_STRIPE     ...
... -------------------- -------------------- -------------------- ...
...                  123                    0                  123 ...

Output from this query (continued).

... RANGE_ADJUSTMENT     RANGE_NUM_CONTAINER RANGE_CONTAINER_ID    
... -------------------- -------------------- -------------------- 
...                    0                    1                    0

Information returned

Table 1. Information returned by the SNAPTBSP_RANGE administrative view and the SNAP_GET_TBSP_RANGE table function
Column name	Data type	Description or corresponding monitor element
SNAPSHOT_TIMESTAMP	TIMESTAMP	snapshot_timestamp - Snapshot timestamp monitor element
TBSP_ID	BIGINT	tablespace_id - Table space identification
TBSP_NAME	VARCHAR(128)	tablespace_name - Table space name
RANGE_NUMBER	BIGINT	range_number - Range number
RANGE_STRIPE_SET_NUMBER	BIGINT	range_stripe_set_number - Stripe set number
RANGE_OFFSET	BIGINT	range_offset - Range offset
RANGE_MAX_PAGE	BIGINT	range_max_page_number - Maximum page in range
RANGE_MAX_EXTENT	BIGINT	range_max_extent - Maximum extent in range
RANGE_START_STRIPE	BIGINT	range_start_stripe - Start stripe
RANGE_END_STRIPE	BIGINT	range_end_stripe - End stripe
RANGE_ADJUSTMENT	BIGINT	range_adjustment - Range adjustment
RANGE_NUM_CONTAINER	BIGINT	range_num_containers - Number of containers in range
RANGE_CONTAINER_ID	BIGINT	range_container_id - Range container
DBPARTITIONNUM	SMALLINT	The database partition from which the data was retrieved for this row.