What is the use of INDEXES option in IMP command?

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The INDEXES option is used to determine whether indexes are imported.

In Oracle, the INDEXES option in the IMP (Import) command is used to specify whether or not to import index definitions along with the data during the data import process.

When you include the INDEXES option in the IMP command, Oracle will import both the data and the associated index definitions from the export file. If you omit the INDEXES option, only the data will be imported, and you will need to recreate the indexes manually after the import process.

Here’s an example of using the INDEXES option in the IMP command:

IMP username/password@database FROM=user_dumpfile.dmp INDEXES=Y

In this example, INDEXES=Y indicates that the import should include the index definitions. If you set it to INDEXES=N or omit it, the import process will not import index definitions.

Keep in mind that importing indexes along with data can affect the overall import performance and might not be necessary in all cases. It depends on your specific requirements and whether you want to recreate the indexes as part of the import process or handle them separately.