Create a Migration Analysis
To create a Migration Analysis
-
If no analysis exists in the Migration Analyzer then the New Analysis wizard displays automatically. Otherwise, click
.
-
The New Analysis wizard has four pages for selecting the options for creating an analysis.
-
After making the selections from these four tabs, click OK.
To abort the Migration analysis
Select Analysis | Abort Analysis.
When the analysis is finished, the Migration Analysis Details window displays with information the retrieve of the query plan for each SQL statement.
New Analysis Wizard: Analyzer Page
View New Analysis Wizard - Analyzer Page
The Analyzer tab is used to name the analysis and to select the folder where the SQL statements that you want to analyze are stored.
Creating a new Analyzer and select SQL to be analyzed
Select this option to create a new analysis using a different set of SQL statements.
Continuing an existing Analyzer using the Analyzer's selected SQL
Select this option to use the same set of SQL statements that is stored in an existing Analyzer. This option adds another Scenario under an existing Analyzer and does not retrieve a new set of query plans for the SQL statements. It uses the query plans that were originally saved with the SQL statements.
Do not rollback changes to the ASE configuration parameters
Specific to leaves the database configuration changes that you select under the Configuration tab after the analysis is finished. Otherwise, these changes are rolled back at the end of the analysis processing. After the analysis is complete, the Apply/Undo Changes button displays at the top of the Migration Analyzer window which displays the Apply Changes and the Undo Changes panes. These panes contain the scripts to make changes to the Adaptive Server configuration parameters.
| Item | Description |
|
Name |
Enter the name for the analysis. |
|
Description |
Enter the description for the analysis. |
|
Last modified |
Displays the last modified date and time. |
|
Save location |
Displays the folder in the tree where the analysis is saved. In the bottom pane, select the folder where you want to save the analysis. To create a new folder Click Add Folder |
.
New Analysis Wizard: Select SQL Page
The Select SQL page is used to select the SQL statements whose query plans you want to analyze when various database parameters are changed.
Select SQL to check for performance changes:
Select SQL from
The SQL statements used in an analysis can be taken from the SQL Repository and the SQL Scanner. If you select SQL statements from the SQL Scanner, these statements are added to the SQL Repository.
SQL query plans will be analyzed:
In the Migration Analyzer, the query plans for the selected SQL statements current database are compared to the query plans in the database for the migration. The following options allow you to determine the "before" query plans.
Using existing query plan saved with the SQL
This option uses the query plan that was saved with the SQL statement when it was saved in the SQL Repository or SQL Scanner.
Obtaining a new query plan under the current connection
This option retrieves the query plan with the current database logon that is assumed to be the source Adaptive Server instance you are migrating from. This current query plan is compared to the query plan that is retrieved from the destination Adaptive Server instance for the migration.
New Analysis Wizard: Migration Page
The Migration tab is used to specify the database connection to retrieve the query plans for the selected SQL statements from the Adaptive Server instance for the migration in order to analysis the changes in the query plans that result from migrating to a new Adaptive Server instance.
| Item | Description |
|
Name |
Enter a name for this Scenario. |
|
Description |
Enter a description for this Scenario. |
|
Login name |
Enter the name of the login for the destination Adaptive Server instance. |
|
Password |
Enter the password of the login. |
|
Server name |
Enter the database server you are logging into from the drop down field, or enter the name directly. |
|
Use default database and user |
Select this option if you would like to login with the default database and user information and privileges. |
|
Specify database and user |
Select this option if you would like to set the user to one with different credentials or privileges. Enter the database and user. |
Note: The new query plans from the Adaptive Server instance for the migration are compared to the query plans that were retrieved either when the selected SQL was saved or that are retrieved using the current logon.