DB2 Version 10.1 for Linux, UNIX, and Windows

SNAPTBSP administrative view and SNAP_GET_TBSP table function - Retrieve table space logical data group snapshot information

The SNAPTBSP administrative view and the SNAP_GET_TBSP table function return snapshot information from the table space logical data group.

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

SNAPTBSP administrative view
SNAP_GET_TBSP table function

SNAPTBSP administrative view

This administrative view allows you to retrieve table space logical data group snapshot information for the currently connected database.

Used in conjunction with the SNAPTBSP_PART, SNAPTBSP_QUIESCER, SNAPTBSP_RANGE, SNAPCONTAINER administrative views, the SNAPTBSP administrative view returns 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 to use the view:

SELECT privilege on the SNAPTBSP administrative view
CONTROL privilege on the SNAPTBSP 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_TBSP 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 a list of table spaces on the catalog database member for the currently connected database.

SELECT SUBSTR(TBSP_NAME,1,30) AS TBSP_NAME, TBSP_ID, TBSP_TYPE, 
   TBSP_CONTENT_TYPE FROM SYSIBMADM.SNAPTBSP WHERE DBPARTITIONNUM = 1

The following is an example of output from this query.

TBSP_NAME  TBSP_ID     TBSP_TYPE  TBSP_CONTENT_TYPE
---------- -------...- ---------- -----------------
TEMPSPACE1           1 SMS        SYSTEMP 
USERSPACE1           2 DMS        LONG 

2 record(s) selected.

SNAP_GET_TBSP table function

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

Used in conjunction with the SNAP_GET_TBSP_PART, SNAP_GET_TBSP_QUIESCER, SNAP_GET_TBSP_RANGE, SNAP_GET_CONTAINER table functions, the SNAP_GET_TBSP table function returns 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--(--dbname--+----------+--)-------------------><
                             '-, member-'

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.
member: An input argument of type INTEGER that specifies a valid member number. Specify -1 for the current member. If the null value is specified, -1 is set implicitly.

If both dbname and member 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 table function takes a snapshot for the currently connected database and database member number.

Authorization

One of the following authorizations is required:

EXECUTE privilege on the SNAP_GET_TBSP 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 a list of table spaces for all database members for the currently connected database.

SELECT SUBSTR(TBSP_NAME,1,10) AS TBSP_NAME, TBSP_ID, TBSP_TYPE, 
   TBSP_CONTENT_TYPE, DBPARTITIONNUM FROM TABLE(SNAP_GET_TBSP('')) AS T

The following is an example of output from this query.

TBSP_NAME  TBSP_ID     TBSP_TYPE  TBSP_CONTENT_TYPE DBPARTITIONNUM
---------- -------...- ---------- ----------------- --------------
TEMPSPACE1           1 SMS        SYSTEMP                        1
USERSPACE1           2 DMS        LONG                           1
SYSCATSPAC           0 DMS        ANY                            0
TEMPSPACE1           1 SMS        SYSTEMP                        0
USERSPACE1           2 DMS        LONG                           0
SYSTOOLSPA           3 DMS        LONG                           0
TEMPSPACE1           1 SMS        SYSTEMP                        2
USERSPACE1           2 DMS        LONG                           2

  8 record(s) selected.

Information returned

Table 1. Information returned by the SNAPTBSP administrative view and the SNAP_GET_TBSP table function
Column name	Data type	Description or corresponding monitor element
SNAPSHOT_TIMESTAMP	TIMESTAMP	The date and time that the snapshot was taken.
TBSP_NAME	VARCHAR(128)	tablespace_name - Table space name
TBSP_ID	BIGINT	tablespace_id - Table space identification
TBSP_TYPE	VARCHAR(10)	tablespace_type - Table space type . This interface returns a text identifier based on defines in sqlutil.h, and is one of: `DMS` `SMS`
TBSP_CONTENT_TYPE	VARCHAR(10)	tablespace_content_type - Table space contents type . This interface returns a text identifier based on defines in sqlmon.h, and is one of: `ANY` `LARGE` `SYSTEMP` `USRTEMP`
TBSP_PAGE_SIZE	BIGINT	tablespace_page_size - Table space page size
TBSP_EXTENT_SIZE	BIGINT	tablespace_extent_size - Table space extent size
TBSP_PREFETCH_SIZE	BIGINT	tablespace_prefetch_size - Table space prefetch size
TBSP_CUR_POOL_ID	BIGINT	tablespace_cur_pool_id - Buffer pool currently being used
TBSP_NEXT_POOL_ID	BIGINT	tablespace_next_pool_id - Buffer pool that will be used at next startup
FS_CACHING	SMALLINT	fs_caching - File system caching
POOL_DATA_L_READS	BIGINT	pool_data_l_reads - Buffer pool data logical reads
POOL_DATA_P_READS	BIGINT	pool_data_p_reads - Buffer pool data physical reads
POOL_TEMP_DATA_L_READS	BIGINT	pool_temp_data_l_reads - Buffer pool temporary data logical reads
POOL_TEMP_DATA_P_READS	BIGINT	pool_temp_data_p_reads - Buffer pool temporary data physical reads
POOL_ASYNC_DATA_READS	BIGINT	pool_async_data_reads - Buffer pool asynchronous data reads
POOL_DATA_WRITES	BIGINT	pool_data_writes - Buffer pool data writes
POOL_ASYNC_DATA_WRITES	BIGINT	pool_async_data_writes - Buffer pool asynchronous data writes
POOL_INDEX_L_READS	BIGINT	pool_index_l_reads - Buffer pool index logical reads
POOL_INDEX_P_READS	BIGINT	pool_index_p_reads - Buffer pool index physical reads
POOL_TEMP_INDEX_L_READS	BIGINT	pool_temp_index_l_reads - Buffer pool temporary index logical reads
POOL_TEMP_INDEX_P_READS	BIGINT	pool_temp_index_p_reads - Buffer pool temporary index physical reads
POOL_ASYNC_INDEX_READS	BIGINT	pool_async_index_reads - Buffer pool asynchronous index reads
POOL_INDEX_WRITES	BIGINT	pool_index_writes - Buffer pool index writes
POOL_ASYNC_INDEX_WRITES	BIGINT	pool_async_index_writes - Buffer pool asynchronous index writes
POOL_XDA_L_READS	BIGINT	pool_xda_l_reads - Buffer Pool XDA Data Logical Reads
POOL_XDA_P_READS	BIGINT	pool_xda_p_reads - Buffer Pool XDA Data Physical Reads
POOL_XDA_WRITES	BIGINT	pool_xda_writes - Buffer Pool XDA Data Writes
POOL_ASYNC_XDA_READS	BIGINT	pool_async_xda_reads - Buffer Pool Asynchronous XDA Data Reads
POOL_ASYNC_XDA_WRITES	BIGINT	pool_async_xda_writes - Buffer Pool Asynchronous XDA Data Writes
POOL_TEMP_XDA_L_READS	BIGINT	pool_temp_xda_l_reads - Buffer Pool Temporary XDA Data Logical Reads
POOL_TEMP_XDA_P_READS	BIGINT	pool_temp_xda_p_reads - Buffer Pool Temporary XDA Data Physical Reads monitor element
POOL_READ_TIME	BIGINT	pool_read_time - Total buffer pool physical read time
POOL_WRITE_TIME	BIGINT	pool_write_time - Total buffer pool physical write time
POOL_ASYNC_READ_TIME	BIGINT	pool_async_read_time - Buffer pool asynchronous read time
POOL_ASYNC_WRITE_TIME	BIGINT	pool_async_write_time - Buffer pool asynchronous write time
POOL_ASYNC_DATA_READ_REQS	BIGINT	pool_async_data_read_reqs - Buffer pool asynchronous read requests
POOL_ASYNC_INDEX_READ_REQS	BIGINT	pool_async_index_read_reqs - Buffer pool asynchronous index read requests
POOL_ASYNC_XDA_READ_REQS	BIGINT	pool_async_xda_read_reqs - Buffer Pool Asynchronous XDA Read Requests
POOL_NO_VICTIM_BUFFER	BIGINT	pool_no_victim_buffer - Buffer pool no victim buffers
DIRECT_READS	BIGINT	direct_reads - Direct reads from database
DIRECT_WRITES	BIGINT	direct_writes - Direct writes to database
DIRECT_READ_REQS	BIGINT	direct_read_reqs - Direct read requests
DIRECT_WRITE_REQS	BIGINT	direct_write_reqs - Direct write requests
DIRECT_READ_TIME	BIGINT	direct_read_time - Direct read time
DIRECT_WRITE_TIME	BIGINT	direct_write_time - Direct write time
FILES_CLOSED	BIGINT	files_closed - Database files closed
UNREAD_PREFETCH_PAGES	BIGINT	unread_prefetch_pages - Unread prefetch pages
TBSP_REBALANCER_MODE	VARCHAR(10)	tablespace_rebalancer_mode - Rebalancer mode . This interface returns a text identifier based on defines in sqlmon.h, and is one of: `NO_REBAL` `FWD_REBAL` `REV_REBAL`
TBSP_USING_AUTO_STORAGE	SMALLINT	tablespace_using_auto_storage - Table space enabled for automatic storage
TBSP_AUTO_RESIZE_ENABLED	SMALLINT	tablespace_auto_resize_enabled - Table space automatic resizing enabled
DBPARTITIONNUM	SMALLINT	dbpartitionnum - Database partition number monitor element
MEMBER	SMALLINT	member - Database member monitor element