The implementation of IBM DB2 package rebinding is simple!

This article mainly describes the actual operation steps of the IBM DB2 package rebinding implementation, as well as the description of relevant matters worth attention in actual operations, we all know that rebinding is a process of re-generating packages for applications that have previously been bound to the database.

When the package corresponding to the application is marked as Invalid or Inoperative.

Rebinding is the process of re-generating packages for applications that have previously been bound to the database. When the package corresponding to the application is marked as Invalid or Inoperative, you must rebind it. In some cases, the package is still valid, but in order to improve the running performance of the program, such as using new indexes or using new system optimization data after running the RUNSTATS command, the user will also rebind the package.

If the application package depends on some data objects, such as tables and triggers. When these data objects are deleted, the package is set to Invalid (Invalid ). When an invalid package is executed next time, it is automatically rebound by the Database Manager. Users must note that if the system fails to automatically re-bind, unexpected errors will occur during the execution of the program. At this time, the program statement may not be wrong. The error is caused by the failure of the rebinding operation.

However, if a user's package depends on a user-defined function (UDF), when the UDF is deleted, the package is set to Inoperative ). For unoperable packages, you must manually rebind them.

In addition, if you want to modify the parameters of the binding process, you also need to re-execute the binding command.

The COMMAND for executing rebinding can be BIND or REBIND. For details about how to use the COMMAND, refer to command reference.

The above content is an introduction to the IBM DB2 package rebinding. I hope you will get some benefits.

The above content is the description of the IBM DB2 package rebinding, hoping to help you in this regard.