Moves one page back in the wizard.
It is available on all but the first page of the wizard.
Moves one page forward in the wizard, except on the last page of the wizard where it is unavailable. This button may also be disabled on some pages until all required information has been entered by the user.
Starts the process that redistributes the data in the database partition group.
Cancels any changes you have made to this wizard and closes the wizard.
Specifies that the tables in the database partition group contain data that is uniformly distributed across database partitions (that is, every database partition is assumed to have the same number of rows). After redistribution, all database partitions in the database partition group will have approximately the same number of rows. Use this option if you have newly added database partitions or if you want to drop database partitions.
Specifies that you are redistributing data onto a newly added database partition. If you have recently added a database partition this option is selected by default.
Specifies that you are preparing to drop one or more existing database partitions.
Specifies that you want to customize the redistribution of data using either a data distribution file or a distribution map.
Specifies that you want the wizard to create a new distribution map. Use this option if you do not have an existing distribution map or data distribution file, or if you want to change the distribution of data.
Specifies the name of the distribution map that the wizard will create. The default name is database_partition_group_name.pmap, and the default location is the install path of the current database instance. You can type a different name for the distribution map or click [...] to look for a specific file name.
Shows the main table spaces in which the corresponding tables reside.
Shows the schemas that own the corresponding tables.
Shows names of tables in each table space.
Shows the size of each table in pages.
Opens a window in which you can save the distribution map that the wizard generates.
Specifies that you want to customize the data distribution rather than let the wizard generate a distribution strategy for you.
Specifies that you want to use an existing data distribution file. If the distribution of distribution key values is skewed, you can use this option to achieve a uniform redistribution of data across the database partition group.
Type the full path name of the data distribution file you want to use or click [...] to browse for a data distribution file.
Specifies that you want to use a target distribution map. A distribution map is a flexible way of controlling where data is stored in a partitioned database. The database manager uses the distribution map, each table's distribution key, and a hashing algorithm to determine which database partition will store a given row of table data.
Type the full path name of the target distribution map you want to use or click [...] to search for a target distribution map.
All the tables in the database partition group are sorted by their size, according to the statistics in the catalog. The largest table is selected. If the statistics are not up-to-date, select the largest table from the list. The data in the database partition group will be redistributed according to the data distribution of this table.
All the database partitions included by the database partition group are listed in this table. By default, each database partition has a relative weight of 1. This setting ensures that there will be approximately the same amount of data on each database partition. You can edit the value in the Weight column to increase or decrease the amount of data on that database partition.
This option redistributes every table in the database partition group within the current redistribute process. The tables are redistributed without regard to table order.
Select this check box to specify a selection of tables to redistribute first. These tables are redistributed in the order specified. The redistribute operation will then process the remaining tables in the database partition group, without regard to table order.
Tables specified in this list are redistributed in the order specified. The redistribute operation will then process the remaining tables in the database partition group, without regard to table order. Enter table names separated by commas. For example: TABLE1, TABLE2, TABLE3
This option allows you to select the table names and the order in which the selected tables are redistributed. Once this button is selected the table names available for redistribution appear in the Available list. This option provides the greatest flexibility for managing the current redistribute operation.
Note: The database partition group is not completely redistributed until every table in the database partition group is redistributed. You can return to this wizard as often as necessary to complete the redistribute operation for the specified database partition group.
This table lists all of the table names in the database partition group that are available to the current redistribute operation. Table names listed require redistribution. If a table in the database partition group is not available in this list, then the table has been redistributed in a previous visit to this wizard, and you are continuing a redistribute operation. Select the table names that you want to redistribute and use arrow buttons to move the table names to Selected list.
This table lists all the tables you have selected to redistribute in the current redistribute operation. Use the Move up or Move down buttons to change the order in which the redistribute operation redistributes the tables.
Moves the selected item from the Available list to the Selected list.
Moves all of the items from the Available list to the Selected list.
Moves the selected item from the Selected list to the Available list.
Moves all of the items from the Selected list to the Available list.
Moves the selected item up one position in the list.
Moves the selected item down one position in the list.
It is recommended that you reclaim newly created free space on the source database partition during the redistribute operation. When COMPACT=ON the redistribute operation will delete moved records from the source database partitions and use the remaining records to fill the gaps, leading to better overall performance during the redistribute operation. The default is COMPACT=ON.
It is recommended that you reuse existing free space within pages of the target database partition. When SPACE_REUSE=RECORD the redistribute operation will scan for the existing free space within a page in the table and reuse the free space. When no free space is left in the table, the redistribute operation will append new pages. The default is SPACE_REUSE=RECORD, specifying record level space reuse. Clearing this check box will result in page level space reuse (SPACE_REUSE=PAGE).
Valid indexes will be maintained during the redistribute operation using an incremental approach (INDEXING MODE=INCREMENTAL).
Select this option to automatically execute the RUNSTATS command following the successful completion of the redistribute utility. It is recommended that you run this command when a significant update activity has occurred, such as redistribution. RUNSTATS collects current statistics on tables and indexes, providing the optimizer with the most accurate information with which to determine the best access plan.
Select this option to rebind all packages immediately after the redistribution operation is complete. The default rebind options are used. When you redistribute tables, related packages can be invalidated. Each package is revalidated the first time you invoke a function in that package. This can be time-consuming.
Shows the partitions included in the database partition group.
Shows the maximum log file size defined for each database partition. A value of "-1" indicates unlimited space for the log files.
Shows the amount of unused log file space for each database partition at the time of analysis. A value of "-1" indicates unlimited space for the log files.
Indicates the number of rows that deviate from the average level of data across all database partitions.
Shows the amount of log space required to log all transactions in the redistribution process on each database partition. Insertions and deletions of data and indexes are logged.
Specifies the maximum number of MB to be redistributed in a single step. If the wizard analyzed the system, the number is prefilled. Otherwise, you must specify the amount. For details on how to calculate the size of the log files you require, see Estimating Log File Space.
Specifies the number of steps required to redistribute the data. If the wizard analyzed the system, the number is prefilled. Otherwise, you must specify the number.
Specifies a name for the redistribution task. By default task name is provided, based on the following:
You can change this name, but you must ensure that the task name is unique. That is, the name cannot already exist in the Task Center.
Specifies the number of stages in the redistribution process.
Shows the name of each stage.
Shows the number of steps included in each stage.
Specify when each stage will be scheduled to run. To specify the scheduled time, select a stage in the table and click the Schedule button.
Opens a window in which you schedule the selected stage. The first time you work with the task scheduler, you must specify the userid and password that will be used to launch the process in which the task runs.
Specifies that if the redistribution fails, the database partition group will roll back to the Ready state. You will be able to issue another redistribution task immediately.
Specifies that if the redistribution fails, the database partition group will roll back to the last commit statement. You will not be able to initiate redistribution immediately. You must either roll back or continue.
Select to update statistics in the system catalog tables to help with the query optimization process. These statistics are useful. Without them, the database manager could make a decision that would adversely affect the performance of an SQL statement. However, collecting statistics can be time-consuming.
Select to have all packages rebound immediately after the redistribution task is complete. The default rebind options are used.
When you redistribute tables, related packages can be invalidated. Each package is revalidated the first time you invoke a function in that package. This can be time-consuming.