The best replacement for oledb is odbc.

The best alternatives to oledb are rated as following:
★★★★★  odbc
★★★  sqlclient
★★★  adodb
★★★  ado.net
★★  ado
★★  odbc performance
★★  ado.net ssis
★  native client
★  odp.net
★  .net provider
★  interop.excel
★  odbc faster
★  sql client
  ado net
  interop
  odp
  system.data.oracleclient

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