The following DB_CONFIG parameters can be used to
manage various aspects of your application's database
environment. For information on your database environment, and
how and where to set these parameters, see the DB_CONFIG File.
| DB_CONFIG Parameters | Description |
|---|---|
| mutex_set_align | Sets the mutex alignment. |
| mutex_set_increment | Configures the number of additional mutexes to allocate. |
| mutex_set_max | Configures the total number of mutexes to allocate. |
| mutex_set_tas_spins | Specifies the number of times the test-and-set mutexes should spin without blocking. |
| rep_set_clockskew | Sets the clock skew ratio. |
| rep_set_config | Configures the Berkeley DB replication subsystem. |
| rep_set_limit | Sets record transmission throttling. |
| rep_set_nsites | Specifies the total number of sites in a replication group. |
| rep_set_priority | Specifies the database environment's priority. |
| rep_set_request | Sets a threshold before requesting retransmission of a missing message. |
| rep_set_timeout | Specifies a variety of replication timeout values. |
| repmgr_add_remote_site | Adds a new replication site to the list of known sites. |
| repmgr_set_ack_policy | Specifies how master and client sites will handle acknowledgment. |
| repmgr_set_local_site | Specifies the host identification string and port number. |
| set_cachesize | Sets the size of the shared memory buffer pool. |
| set_cache_max | Sets the maximum size for set_cachesize parameter. |
| set_create_dir | Sets the directory path to create the access method database files. |
| set_flags | Configures a database environment. |
| set_intermediate_dir_mode | Configures the directory permissions. |
| set_lg_bsize | Sets the size of the in-memory log buffer. |
| set_lg_dir | Sets the path of the directory for logging files. |
| set_lg_filemode | Sets the absolute file mode for created log files. |
| set_lg_max | Sets the maximum size of a single file in the log. |
| set_lg_regionmax | Sets the size of the underlying logging area. |
| set_lk_detect | Sets the maximum number of locking entities. |
| set_lk_max_lockers | Sets the maximum number of locking entities. |
| set_lk_max_locks | Sets the maximum number of locks supported by the Berkeley DB environment. |
| set_lk_max_objects | Sets the maximum number of locked objects. |
| set_lk_partitions | Sets the number of lock table partitions in the Berkeley DB environment. |
| log_set_config | Configures the Berkeley DB logging subsystem. |
| set_mp_max_openfd | Limits the number of file descriptors the library will open concurrently when flushing dirty pages from the cache. |
| set_mp_max_write | Limits the number of sequential write operations |
| set_mp_mmapsize | Sets the maximum file size. |
| set_open_flags | Initializes specific subsystems of the Berkeley DB environment. |
| set_shm_key | Configures the database environment's base segment ID. |
| set_thread_count | Declares an approximate number of threads in the database environment. |
| set_timeout | Sets timeout values for locks or transactions. |
| set_tmp_dir | Specifies the directory path of temporary files. |
| set_tx_max | Configures support of simultaneously active transactions. |
| set_verbose | Enables/disables the Berkeley DB message output. |