With this Loader command, you can control the loading of all application data and the corresponding database catalog information.
<dbload_statement> ::=
DBLOAD [<configurationstream_spec>] <cataloginstream_spec> <datainstream_spec> [<packagestream_spec>] [<restart>]
You can also use the keywords LOAD DB instead of the keyword DBLOAD.
THE DBLOAD command can only be executed by the database system administrator (SYSDBA user).
You have unloaded the database catalog and its content using the DBEXTRACT command.
The DBLOAD command combines the commands CATALOGLOAD ALL and TABLELOAD ALL.
You can use external backup tools to load data.
At least two data streams are required when loading:
· Data stream for the database catalog definitions <cataloginstream_spec>
· Data stream for the application data <datainstream_spec>
If you want to use the data streams generated with the DBEXTRACT command, specify these names.
The system table TRANSFORMATIONMODEL and other system tables are filled.
· Unless you specify the data stream <configurationstream_spec>, all of the data contained in the data streams <cataloginstream_spec> and <datainstream_spec> is loaded.
·
By
specifying a data stream <configurationstream_spec>, you can
exclude the application data of selected tables from the application data
being loaded <datainstream_spec>.The tables
must be identified in the data stream by the specification of their owner and
the table name.
The
information about which tables are not loaded is stored in the system
tables. You can
display this information by displaying the system table TRANSFORMATIONPACKAGES. The tables
excluded from the loading of the application data have the value TRUE in the column
EXCLUDE.
The database catalog entries (<cataloginstream_spec>) of all tables are always loaded, regardless of the restrictions made in <configurationstream_spec>.
· When you specify a data stream <packagestream_spec>, all entries of the table TRANSFORMATIONPACKAGES are unloaded to this data stream. You are recommended to use this option to create a log of the load process.
· If you do not specify the data stream <packagestream_spec>, the system table TRANSFORMATIONPACKAGES is not unloaded.
The application data and the database catalog definitions are loaded using the data streams <datainstream_spec> and <cataloginstream_spec>.
If necessary, all entries of the table TRANSFORMATIONPACKAGES are unloaded to the data stream <packagestream_spec>.
The load process cannot be successfully completed. In this case, the Loader logs the cause of the error in the log file.
The values PACKAGEGUID and CLIENTNODE are also written to the log file.The PACKAGEGUID is required if you want to restart the unload process.