iqunload is a fully automated migration tool that recreates the catalog store and reloads it with the existing database schema metadata. Only the catalog is recreated; the data and temp dbspaces are not changed.
schema unload - unloads a 12.x database schema.
migration - migrates a 12.x database to Sybase IQ 15.4.
The iqunload utility takes one or more parameters.
Option |
Description |
|---|---|
-ap <size> |
(Optional) Set the page size for the new catalog store. |
-au |
(Required, except when specifying -n) Migrate the database. You can specify-au or-n as an argument, but not both. |
-c “keyword=value;...” |
(Required) Supply database connection parameters. You must specify a DBF parameter to specify the name of the database file for migration. The file path is either absolute or relative to the server startup directory. |
-dc |
(Optional) Recalculate computed columns in the database. |
-ms_filename |
-ms_filename is optional for a simplex migration, but required for a multiplex migration. Specify filename for new empty IQ_SYSTEM_MAIN store created during database migration. If not specified, the default new main store is a file system file called new_main_store.iq |
-ms_reserve |
(Optional) Size of new IQ_SYSTEM_MAIN reserve, in MB. If unspecified, defaults to zero. |
-ms_size |
(Optional) Size of new IQ_SYSTEM_MAIN store, in MB, based on the database size. The minimum, assuming a default page size, is 200MB. If the user specifies an –ms_size value smaller than the computed value, Sybase IQ uses the computed value; otherwise the user–specified value is used. |
-n |
(Optional, except for schema unload.) Unload schema definition only. You can specify-au or-n as an argument, but not both. Note: You must use Sybase IQ 12.7 ESD
5 or later to use this option.
|
-new_startline |
(Optional) Specify startup switches for the new server that is the migration target. For a complete list of server startup switches, see the Utility Guide. |
-o <file> |
(Optional) Log output messages to file. |
-q |
(Optional) Suppress messages and windows. |
-r <file> |
(Optional) Specify name of generated the reload.sql command file. |
-t <list> |
(Optional) Output listed tables only. Can specify OwnerName.TableName, or TableName alone. |
-v |
(Optional) Return verbose messages. |
-y |
(Optional) Replace existing reload schema SQL script with new output without confirmation. |
iqunload –au –c “UID=DBA;PWD=SQL;DBF=/mydevice/test_dir/test2.db”
iqunload –n -c “UID=DBA;PWD=SQL;DBF=/test_dir/test2/test2.db;ENG= myserver_test2” –r “/test_dir/unload_dir/test2_reload.sql”
iqunload –au –c "UID=DBA;PWD=SQL;DBF=test3.db;START=–ch 128M –iqmc 50" –new_startline "–ch 256M –iqtc 400"
Do not include -iqnotemp XYZ in the new start line or else migration will fail. As part of the migration process, temp files will be added to IQ_SYSTEM_TEMP. If the server is started with iqnotemp then the iqunload will NOT be able to add these temp files.
iqunload –au –c "UID=DBA;PWD=SQL;DBF=asiqdemo.db" –ms_filename "/dev/rdsk/c4t0d0s3"
iqunload –au –c "UID=DBA;PWD=SQL;DBF=asiqdemo.db" -ms_filename \\\\.\\PhysicalDrive2
Sybase IQ version 12.6 ESD #11
Sybase IQ version 12.7 ESD #5
For schema unload, start your existing 12.6 or 12.7 server and specify the -n parameter on the iqunload command. Schema unload creates schema load scripts and output files in the current directory.