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Oracle Application Express administrators can configure the workspace sizes available when users request:
a new workspace and schema
additional space for an existing workspace
To configure workspace size options:
Log in to Oracle Application Express Administration Services. See "Logging in to Oracle Application Express Administration Services".
Click Manage Service.
Under Manage Environment Settings, click Instance Settings.
Scroll down to New Workspace Request Size and Workspace Change Request Size, specify the appropriate information:
Size in Megabytes - Edit the default numbers to change the size options.
Display - Select Yes for all the size options you want to appear in the select list for workspace size.
Default - Select the default value to appear in the storage field for workspace and change requests.
Click Apply Changes.