How to quickly master the performance parameters of the IBM DB2 database

Guidance:This article will introduce youPerformance Parameters of the IBM DB2 databaseThe "performance impact" column in the table indicates the degree to which each parameter affects system performance. However, this column cannot be accurately applied to all environments; readers should regard this information as a general situation.

Height:Indicates that this parameter can have an important impact on performance. Values of these parameters are determined consciously; in some cases, the default value provided is accepted.

Medium:Indicates that this parameter may affect the performance. Your specific environment and needs will determine how much adjustment should be made to these parameters.

Low:Indicates that this parameter has less common or less important impact on performance.

None:Indicates that this parameter has no direct impact on performance. When you do not have to adjust these parameters for performance reasons, they are important for other aspects of system configuration, such as enabling communication support.

The following are the performance parameters of the IBM DB2 database:

App_ctl_heap_sz:The application controls the heap size (app_ctl_heap_sz

Applheapsz: Applheapsz)

Audit_buf_sz:Review buffer size (audit_buf_sz)

Autorestart:Autorestart)

Avg_appls:Avg_appls)

Buffpage:Buffer pool size (buffpage) during high activity)

Catalogcache_sz:Directory cache size (catalogcache_sz)

Chngpgs_thresh:High page modification threshold (chngpgs_thresh)

Copyprotect:Copyprotect)

Dbheap:Dbheap)

Dft_degree:High default (dft_degree)

Dft_extent_sz:Default data block size of the tablespace in (dft_extent_sz)

Dft_loadrec_ses:Default number of load recovery dialogs in (dft_loadrec_ses)

Dft_prefetch_sz:Default pre-read size in (dft_prefetch_sz)

Dft_queryopt:Default query optimization level (dft_queryopt)

Dft_refresh_age:Default refresh time limit in (dft_refresh_age)

Dft_sqlmathwarn:No arithmetic exception is encountered. Continue (dft_sqlmathwarn)

Dir_obj_name:Object Name (dir_obj_name) in the namespace without DCE)

Discover_db:Database found in (discover_db)

Dlchktime:Check the deadlock interval (dlchktime)

Dl_expint:No data link access token expiration time interval (dl_expint)

Dl_num_copies:No data link replica count (dl_num_copies)

Dl_time_drop:The performance parameters of the IBM DB2 database do not have the data link time after the removal (dl_time_drop)

Dl_token:Low Data Link token algorithm (dl_token)

Dl_upper:No data link token in upper case (dl_upper)

Dyn_query_mgmt:Low-dynamic SQL query Management (dyn_query_mgmt
 

We will introduce the performance parameters of the IBM DB2 database. We will continue to introduce the performance parameters in the future. I hope the content mentioned in this Article will be helpful to you.