Files that were used by 32-bit mode HiRDB can generally be used by 64-bit mode HiRDB. However, the following files are not compatible with 64-bit mode HiRDB and cannot be used.
The default values of the HiRDB system definition operands shown in the following table change when HiRDB is migrated from 32-bit mode to 64-bit mode.
Table 1-6 Operands with altered default values
Operand name | Specified item | Default value in 32-bit mode | Default value in 64-bit mode |
---|---|---|---|
pd_work_buff_size | Work table buffer size |
| 5120# |
pd_fes_lck_pool_size | Lock pool size of front-end server | {(pd_max_users value + 3) x (pd_max_access_tables value + 4)} ![]() | {(pd_max_users value + 3) x (pd_max_access_tables value + 4)} ![]() |
SHMMAX | Upper limit for shared memory segment size | 200 MB | 1,024 MB |
When HiRDB is migrated from 32-bit mode to 64-bit mode, more memory is required. For details about calculating memory requirements, see Chapter 15. Storage Requirements for HiRDB.
When HiRDB is migrated to 64-bit mode, the UOC interface changes for the database creation utility (pdload) and the database reorganization utility (pdrorg). This means that the UOC must be re-created. For details about the UOC interface, see the manual HiRDB Version 9 Command Reference.