I'm doing an interface using ArcMap 10.2 and Python scripts that run at Python window. For each time that my script run, I need to update information, so I think that I need to delete originals tables and create news.

When I try to do this with ExcelToTable it gives me an error to add field:

arcpy.env.workspace = "F:\Otim\inter"
arcpy.Delete_management(c_re) #delete layer
c_re=arcpy.ExcelToTable_conversion("02_Rea.xlsx", "cg1_re_otim.dbf", "Rea_L")
#arcpy.env.workspace = "F:ArcGIS\Trab\Model\Result"
arcpy.AddField_management(c_re, "Name_Ba", "Text", 50, "", "", "refcode", "NULLABLE", "REQUIRED")
arcpy.AddField_management(c_re, "Longitude", "Float", "", "", "9", "", "NON_NULLABLE", "NON_REQUIRED", "")
arcpy.AddField_management(c_re, "Latitude", "Float", "", "", "9", "", "NON_NULLABLE", "NON_REQUIRED", "")

ERROR 000464: Cannot get exclusive schema lock. Either being edited or in use by another application. Failed to execute (AddField).

How can I solve this problem?

1 Answer 1


Try changing:

c_re=arcpy.ExcelToTable_conversion("02_Rea.xlsx", "cg1_re_otim.dbf", "Rea_L")


c_re = "cg1_re_otim.dbf"
arcpy.ExcelToTable_conversion("02_Rea.xlsx", c_re, "Rea_L")

The way you had it is setting your variable c_re to a Result object rather than a string representing a dBase file name, which is what the Add Field tool expects.

  • It gives another error: Runtime error Traceback (most recent call last): File "<string>", line 61, in <module> File "c:\program files (x86)\arcgis\desktop10.2\arcpy\arcpy\conversion.py", line 44, in ExcelToTable raise e ExecuteError: Failed to execute. Parameters are not valid. ERROR 000725: Output Table: Dataset F:\Otimizacao\interface\cg1_reactiva_otimizada.dbf already exists. Failed to execute (ExcelToTable).
    – S.Rai
    Commented Aug 30, 2016 at 10:01
  • 1
    That's a new problem so should be researched/asked as a new question, using the new code snippet to illustrate precisely what you ran and the error you received from that code snippet.
    – PolyGeo
    Commented Aug 30, 2016 at 10:03

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