Use the dbset command to choose a database and benchmark. For the database the database prefix shown in the XML configuration is used. IIf an incorrect database is selected the available values are prompted.

hammerdb>dbset db orac
Unknown prefix orac, choose one from ora mssqls db2 mysql pg

When a valid option is chosen the database is set.

hammerdb>dbset db mssqls
Database set to MSSQLServer

The print command can be used to confirm the chosen database and available options.

hammerdb>print db
Database MSSQLServer set.
To change do: dbset db prefix, one of:
Oracle = ora MSSQLServer = mssqls Db2 = db2 MySQL = mysql PostgreSQL = pg 

Similarly the workload is also selected from the available configuration also prompting if an incorrect value is chosen. When a correct value is chosen the selection is confirmed. For backward compatibility with existing scripts TPROC-C and TPC-C and TPROC-H and TPC-H are interchangeable.

hammerdb>dbset bm TPROC-H
Benchmark set to TPROC-H for MSSQLServer

hammerdb>dbset bm TPC-C
Benchmark set to TPC-C for MSSQLServer

hammerdb>print bm
Benchmark set to TPC-C

After the database and workload is selected the print dict command lists all of the available configuration variables for that database.

hammerdb>print dict
Dictionary Settings for MSSQLServer
connection {
 mssqls_server             = (local)
 mssqls_linux_server       = localhost
 mssqls_tcp                = false
 mssqls_port               = 1433
 mssqls_azure              = false
 mssqls_authentication     = windows
 mssqls_msi_object_id      = null
 mssqls_linux_authent      = sql
 mssqls_odbc_driver        = ODBC Driver 18 for SQL Server
 mssqls_linux_odbc         = ODBC Driver 18 for SQL Server
 mssqls_uid                = sa
 mssqls_pass               = admin
 mssqls_encrypt_connection = true
 mssqls_trust_server_cert  = true
}
tpcc       {
 mssqls_count_ware       = 1
 mssqls_num_vu           = 1
 mssqls_dbase            = tpcc
 mssqls_imdb             = false
 mssqls_bucket           = 1
 mssqls_durability       = SCHEMA_AND_DATA
 mssqls_use_bcp          = true
 mssqls_total_iterations = 10000000
 mssqls_raiseerror       = false
 mssqls_keyandthink      = false
 mssqls_checkpoint       = false
 mssqls_driver           = timed
 mssqls_rampup           = 2
 mssqls_duration         = 5
 mssqls_allwarehouse     = false
 mssqls_timeprofile      = false
 mssqls_async_scale      = false
 mssqls_async_client     = 10
 mssqls_async_verbose    = false
 mssqls_async_delay      = 1000
 mssqls_connect_pool     = false
}

Use the diset command to change these values for example for the number of warehouses to build.

hammerdb>diset tpcc mssqls_count_ware 10
Changed tpcc:mssqls_count_ware from 1 to 10 for MSSQLServer

and the number of virtual users to build them.

hammerdb>diset tpcc mssqls_num_vu 4
Changed tpcc:mssqls_num_vu from 1 to 4 for MSSQLServer

If the dict value to be set has a special character using curly brackets around the value will prevent the interpretation of the special character.

hammerdb>diset connection mssqls_server {(local)\SQLDEVELOP}
Changed connection:mssqls_server from (local) to (local)\SQLDEVELOP for MSSQLServer

print dict will show the changed values.

hammerdb>print dict
Dictionary Settings for MSSQLServer
connection {
 mssqls_server             = (local)\SQLDEVELOP
 mssqls_linux_server       = localhost
 mssqls_tcp                = false
 mssqls_port               = 1433
 mssqls_azure              = false
 mssqls_authentication     = windows
 mssqls_msi_object_id      = null
 mssqls_linux_authent      = sql
 mssqls_odbc_driver        = ODBC Driver 18 for SQL Server
 mssqls_linux_odbc         = ODBC Driver 18 for SQL Server
 mssqls_uid                = sa
 mssqls_pass               = admin
 mssqls_encrypt_connection = true
 mssqls_trust_server_cert  = true
}
tpcc       {
 mssqls_count_ware       = 10
 mssqls_num_vu           = 4
 mssqls_dbase            = tpcc
 mssqls_imdb             = false
 mssqls_bucket           = 1
 mssqls_durability       = SCHEMA_AND_DATA
 mssqls_use_bcp          = true
 mssqls_total_iterations = 10000000
 mssqls_raiseerror       = false
 mssqls_keyandthink      = false
 mssqls_checkpoint       = false
 mssqls_driver           = timed
 mssqls_rampup           = 2
 mssqls_duration         = 5
 mssqls_allwarehouse     = false
 mssqls_timeprofile      = false
 mssqls_async_scale      = false
 mssqls_async_client     = 10
 mssqls_async_verbose    = false
 mssqls_async_delay      = 1000
 mssqls_connect_pool     = false
}