Can files be transferred from Oracle Apex to SharePoint through uploading?

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Yes, files can be transferred from Oracle Apex to SharePoint through uploading. You can export the files from Oracle Apex and then import the same into SharePoint document libraries. Alternatively, you can also use third-party tools to automate the transfer process. One such tool is SharePoint Migration Tool (SPMT), which supports a variety of migration scenarios including migration from Oracle to SharePoint.