DPB Parameters
There are two tables listing the DPB parameters: Table 4.2 groups the DPB parameters by purpose. Table 4.3 lists the parameters alphabetically and gives value ranges and length for each.
Table 4.2 DPB Parameters Grouped by Purpose
| Description | Parameter | |
|---|---|---|
| User Validation Parameters | ||
| User name | isc_dpb_user_name | |
| Password | isc_dpb_password | |
| Encrypted password | isc_dpb_password_enc | |
| Database system encryption password | isc_dpb_sys_encrypt_password | |
| System database administrator’s user name | isc_dpb_sys_user_name | |
| Authorization key for a software license | isc_dpb_license | |
| Database encryption key | isc_dpb_encrypt_key | |
| Environmental Control | ||
| Number of cache buffers | isc_dpb_num_buffers | |
| dbkey context scope | isc_dpb_dbkey_scope | |
| System Management | ||
| Force writes to the database to be done asynchronously or synchronously | isc_dpb_force_write | |
| Instructs server to include validation checks during a database restore | isc_dpb_gbak_validate | |
| Specify whether or not to reserve a small amount of space on each database page for holding backup versions of records when modifications are made. | isc_dpb_no_reserve | |
| Specify whether or not the database should be marked as damaged | isc_dpb_damaged | |
| Perform consistency checking of internal structures | isc_dpb_verify | |
| Specifies database space preallocation | isc_dpb_preallocation | |
| Use this parameter to request database preallocate information that is stored on the database header. | isc_info_dpb_preallocation | |
| This Directive initiates an online dump | isc_dpb_online_dump | |
| This parameter indicates that the current online dump files should be deleted and a full database dump executed (optional) | isc_dpb_old_overwrite | |
| Specifies the name of an online dump file, up to 255 characters | isc_dpb_old_file_name | |
| This parameter specifies the number of pages for the online dump file (optional) | isc_dpb_old_file_size | |
| The indicates the backup database to archive. The equivalent command-line is: gbakarchive_database | isc_dpb_archive_database | |
| This parameter specifies the backup journals to archive. The equivalent command-line is: gbakarchive_journals | sc_dpb_archive_journals | |
| This indicates the database to recover from archive. The equivalent command-line is: gbakarchive_recover | isc_dpb_archive_recover | |
| This deletes all files in RDB$JOURNAL_ARCHIVES with RDB$ARCHIVE_SEQUENCE less than the requested sequence. The equivalent commandline is: gfix-archive_sweep<n>. | isc_dpb_archive_sweep | |
| Configures the maximum number of database dumps allowed in the archive. The equivalent command-line is: gfix-archive_dumps<n>. | isc_dpb_archive_dumps | |
| Shadow Control | ||
| Activate the database shadow, an optional,duplicate, in-sync copy of the database. | isc_dpb_activate_shadow | |
| Delete the database shadow | isc_dpb_delete_shadow | |
| Replay Logging System Control | ||
| Activate a replay logging system to keep track of all database calls | isc_dpb_begin_log | |
| Deactivate the replay logging system | isc_dpb_quit_log | |
| Deactivate the replay logging system | isc_dpb_quit_log | |
| Character Set and Message File Specification | ||
| Language-specific message file | isc_dpb_lc_messages | |
| Character set to be utilized | isc_dpb_lc_ctype |