I have a code that a developer created that no long works for me. With a recent upgrade from 2.8.x to 2.9, the script no errors out at a line " project_service_aprx_object.save()". What I believe the code is trying to do update the source of feature layers in a map ("1_Service_Status_On"). However, when it comes to the project_service_aprx_object.save() line, it gives me the following error: Traceback (most recent call last): File " ", line 686, in File "A:\Program Files\ArcGIS\Pro\Resources\ArcPy\arcpy\_mp.py", line 285, in save return convertArcObjectToPythonObject(self._arc_object.save(*gp_fixargs((), True))) OSError: G:\SDE_User_Connections\Projects\UnitedStates\US_Test01\Web_Services\Test01_Project_Services.aprx I'm running the code in an empty APRX file so I don't even have the Test01_Project_Services.aprx open. I'm a novice at python so any I can provide more of the code if necessary.

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project_service_aprx_object.save() Error from Pro 2.8.x to 2.9 upgrade

Min-DongChang

I have a code that a developer created that no long works for me. With a recent upgrade from 2.8.x to 2.9, the script no errors out at a line " project_service_aprx_object.save()". What I believe the code is trying to do update the source of feature layers in a map ("1_Service_Status_On"). However, when it comes to the project_service_aprx_object.save() line, it gives me the following error:

Traceback (most recent call last):
File "<string>", line 686, in <module>
File "A:\Program Files\ArcGIS\Pro\Resources\ArcPy\arcpy\_mp.py", line 285, in save
return convertArcObjectToPythonObject(self._arc_object.save(*gp_fixargs((), True)))
OSError: G:\SDE_User_Connections\Projects\UnitedStates\US_Test01\Web_Services\Test01_Project_Services.aprx

I'm running the code in an empty APRX file so I don't even have the Test01_Project_Services.aprx open. I'm a novice at python so any I can provide more of the code if necessary.

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Accepted answers

VincentLantaca

seems like there are still issues with aprx.save() even in 3.1, I can run a geoprocessing script with modifies then saves an .aprx file once after opening ArcGIS Pro, but the same script a second time will give the OSError until I re-open Pro

All comments

IhabHassan

project folder/files access permissions?
I would try to do manually in Pro what they code is trying to do, you might get more descriptive error message.

Min-DongChang

Ihab thanks for responding, my user has admin rights to all the project folders. Also I'm not sure why it's still referencing the default python library. In Pro, I cloned the default python library and use it as the default library, which is saved on the C: drive. One other note is that the code was written in python 2.7.16. Not sure if that makes a difference. These are the lines to the line 686 error:

for project_service_map_object in project_service_map_list:
if project_service_map_object.name == r"1_Service_Status_On":
print("Captured -- " + project_service_map_object.name)

print("Creating a List of Layers in " + project_service_map_object.name)
project_service_layers_list = project_service_map_object.listLayers("*")

print("Updating Data Source for All Layers in the 1_Service_Status_On Map")
for layer in project_service_layers_list:
if not (layer.isGroupLayer or layer.isBasemapLayer):
print("Before: " + str(layer.name))
pprint.pprint(layer.connectionProperties)
layer.updateConnectionProperties(
current_connection_info=project_energizer_sde_workspace,
new_connection_info=p_userconnection_workspace_full_path,
auto_update_joins_and_relates=True,
validate=True,
ignore_case=True)
project_service_aprx_object.save()

HenriqueJoner

Hello!

I'm into this too. We are running and uploading analysis from the past year every single day. Today decided to upgrade ArcGIS PRO to 2.9 version, and now i'm getting this error in all my scripts, every time when i run "aprx.save()". There is a way to downgrade to 2.8 version, i need this stuff working has it was in the past year.

Thanks

MarceloRosensaft

Hello,

I'm having the same problem and it has nothing to do with access permissions or anything else. I run the same python in two computers that deal with the same files in our internal network. The one with the Pro 2.7 works and the one with the Pro 2.9 doesn't.

Besides, you don't need much code to show the problem. Two lines are enough to make the python crash:

# p_Pro_project is the path of an existing project

o_Pro_project = arcpy.mp.ArcGISProject(p_Pro_project)

o_Pro_project.save()

Any ESRI people can confirm the bug or the "by design feature"? It would be nice at least to hear a YES or a NO.

Thanks,

Marcelo

ChrisZumwalt

I am experiencing this same issue.

I try to save an aprx after loading some layouts using:

aprx.save()

and then I get the error.

File "C:\Program Files\ArcGIS\Pro\Resources\ArcPy\arcpy\_mp.py", line 285, in save
return convertArcObjectToPythonObject(self._arc_object.save(*gp_fixargs((), True)))

ESRI please advise. Are we doing something wrong?

ChrisZumwalt

My Current work around is to use

aprx.saveACopy()

NicholasRolstad2

Yep. aprx.save() throws an OSError for me, every single time. v. 2.9

JoeLemeris

I will second this workaround! I had a similar issue where aprx.save() threw an OSerror, which began after we upgraded from ArcPro 2.8.3 to 2.9.1. We also had the same error on thrown on a GP service after upgrade from arcgis enterprise 10.8.1 to 10.9.1. altering the code to aprx.saveACopy() resulted in normal functionality on both pro and enterprise/server. Thanks for the tip!

greg_eam

Looks like this is still an issue in Pro 2.9.2

I also get an OSError when calling aprx.save() in my script to replace project data sources

Any word from Esri about this?

JoeLemeris

Following up from my previous response to a post in this thread: a bug has been created for this issue, i received a notification a few weeks ago: in addition to adding the del statement they suggest, we found success just using aprx.saveACopy() instead of aprx.save().

BUG-000145915 - An OSError message is returned when using the ArcGIS Pro project's Save function in the Python window.

Current Information:

Status: Known Limit.

Public Explanation: This is a read/only issue. They reference project A, saveACopy to Project B, then try to reference Project B and save. BUT project B is already "open" in memory.

https://support.esri.com/en/bugs/nimbus/QlVHLTAwMDE0NTkxNQ==

By adding the "del aprx_template" statement below, I believe the issue is addressed.

Workaround: Add the 'del aprx_template' statement.

Anonymous User

I have the same issue and have been using saveACopy() as a workaround for now.

JustinReynolds

Seeing this as well in a GP tool. After updating some layout elements we save the aprx. Getting an OSError as reported above 2.9.2 and persists in 2.9.3 (also no relevant bug fix listed in the release notes for 2.9.3).

codergrl

Ran into the same issue in 2.9. It's happening because you still have a reference to the object. Make sure to call del aprx every time you're done with the object so it gets garbage collected. And this is also why saveACopy works because you get a new reference to a new object. With a lot of calls to saveACopy, you can run into a memory leak issue. See code below for example:

# this works fine
for i in range(3):
    aprx = arcpy.mp.ArcGISProject(PRO_PROJECT_PATH)
    aprx.save()
    del aprx

# this fails after the first run
for i in range(3):
    aprx = arcpy.mp.ArcGISProject(PRO_PROJECT_PATH)
    aprx.save()

Please mark as resolved if this solves your problem.

MichaelMorisette

I've ran into this bug after upgrading from 2.8.x to 2.9.x. Using the saveACopy(aprxPath) workaround worked for me as well.

Anonymous User

This is still present in 3.x. Note if you have any references to objects in the project you will get this error. So you may also need to cleanup any references to maps, layouts, etc. Not only the project object.

David_Lindsey

I was encountering the same issue. However, all solutions above did not work for me. Turns out, my issue was that I had somehow corrupted my .aprx project file through previous (and albeit numerous!) script test cycles. Once I deleted the corrupted .aprx and replaced that file with a backup copy of itself, the script proceeded to save the .aprx as expected.

PeterMilenkovic

Thanks for the tip, this worked for me

I thought deleting the aprx would be enough... i had to delete the elements and layouts as well.

KevindeSouza

How do you handle to copies of the project you are saving? I have a script that is using save() frequently throughout - changing it to saveACopy() results in the a read only project being written over and over again. Any advice?

ThomasBaconlol

I noticed that save functions without indentation were throwing the error for me and that save functions inside of a loop were not always throwing an error after reading your comment.

I chained two scripts together however and then it threw the error again so now I'm really stumped.

saveACopy does not work for my purposes either just as a note for anyone reading.

RahulGupta2

I encountered the same problem. To resolve the issue I used the following code.

#Remove existing layer from original template
Original_Template = r"C:\TempScript\original.aprx"
aprx = arcpy.mp.ArcGISProject(Original_Template)
aprxMap = aprx.listMaps("Map")
for lyr in aprxMap[0].listLayers():
aprxMap[0].removeLayer(lyr)

#Add new layer to original template
_layer = arcpy.MakeFeatureLayer_management(fc,"LayerName").getOutput(0)
aprxMap[0].addLayer(_layer,"BOTTOM")
aprx.saveACopy(r"C:\TempScript\Temp_Template.aprx")

#Save original template to the temp template as aprx.save() is not working
aprx_tmp = arcpy.mp.ArcGISProject(r"C:\TempScript\Temp_Template.aprx")
aprxMap_tmp = aprx_tmp.listMaps("Map")
m = aprxMap_tmp[0]
sddraft = m.getWebLayerSharingDraft("FEDERATED_SERVER", "MAP_IMAGE", "LayerName")

Regards

Rahul

VincentLantaca

ASw93

Can confirm I am seeing this same error still in 3.1.

jpilbeam

Still happening in 3.3.

TaylorCarnell1

This happens when rerunning a script because you are getting a new reference to the project and subsequent references are read only.
It isn't desirable, but is technically documented behaviour. As per ArcGISProject:

Projects can be referenced multiple times, but only the first reference can be saved directly because the other references will be opened as read-only.

You can solve this using:

try:
    project
except NameError:
    project = arcpy.mp.ArcGISProject(project_path)

If you already have multiple references, your memory will need to be cleared first (kernel or machine restart), before this will help.

It's still possible to get orphaned references in certain conditions, so this isn't bullet proof.

GISDepartmentMFM

Stable solution found that doesn't require copying the project, do not create any aprx project variables other than the one in the context class:

try:
    gis_context.aprx.save()
except:
    try:
        gis_context.refresh()
        gis_context.aprx.save()
    except:
        ArcGISUtils.log(f"SAVEING ERROR ocured at {function name}")
        messagebox.showerror("Error", f"An error occurred in {function name} Please restart the program to run this function")
gis_context.refresh()

Relevant context code:

class ArcGISContext:
"""
    Context manager for handling ArcGIS project resources and cleanup.
    Ensures proper initialization and cleanup of ArcGIS resources.
    """
    def __init__(self):
"""
        Initialize the ArcGIS context manager.
        Sets up the initial state with no project or geodatabase references.
        """
        self.aprx_path = None
        self.aprx = None
        self.default_gdb = None
        self.map = None
        self.layer_list = []
        self.is_current = None
        ArcGISUtils.log("ArcGIS context manager initialized")

    def __enter__(self):
"""
        Set up ArcGIS project context and resources.
        Returns:
            ArcGISContext: The initialized context manager
        Raises:
            Exception: If there is an error initializing the ArcGIS context
        """
        try:
            def find_most_recent_aprx():
                user_folder = os.path.expanduser("~")
                arcgis_projects_folder = os.path.join(user_folder, "Documents", "ArcGIS", "Projects")

                # Find all .aprx files
                aprx_files = []
                for root, dirs, files in os.walk(arcgis_projects_folder):
                    for file in files:
                        if file.endswith(".aprx"):
                            full_path = os.path.join(root, file)
                            aprx_files.append((full_path, os.path.getmtime(full_path)))

                # Sort by last modified time
                if aprx_files:
                    return sorted(aprx_files, key=lambda x: x[1], reverse=True)[0][0]
                return None
            try:
                self.aprx_path = "CURRENT"
                self.aprx = arcpy.mp.ArcGISProject("CURRENT")
                self.is_current = True
            except OSError:
                recent_project = find_most_recent_aprx()
                self.aprx_path = recent_project
                self.aprx = arcpy.mp.ArcGISProject(recent_project)
                self.is_current = False
            self.default_gdb = self.aprx.defaultGeodatabase
            try:
                self.map = self.aprx.activeMap
                lyr_list = self.map.listLayers()
                tbl_list = self.map.listTables()
                self.layer_list = lyr_list + tbl_list
            except AttributeError:
                self.map = self.aprx.listMaps()[0]
                lyr_list = self.map.listLayers()
                tbl_list = self.map.listTables()
                self.layer_list = lyr_list + tbl_list

            return self
        except Exception as e:
            ArcGISUtils.log(f"Error initializing ArcGIS context: {str(e)}")
            ArcGISUtils.log(traceback.format_exc())
            raise
    def refresh(self):
"""Refreshes the current context to see changes"""
        # Clean up existing resources first
        self.__exit__(None, None, None)
        # Then reinitialize
        return self.__enter__()


    def __exit__(self, exc_type, exc_val, exc_tb):
"""
        Clean up ArcGIS resources.
        Args:
            exc_type: Exception type if an exception was raised
            exc_val: Exception value if an exception was raised
            exc_tb: Exception traceback if an exception was raised
        """
        try:
            if self.aprx:
                del self.aprx
            self.aprx_path = None
            self.aprx = None
            self.default_gdb = None
            self.map = None
            self.layer_list = []
            self.is_current = None
            ArcGISUtils.log("ArcGIS context cleaned up successfully")
            arcpy.management.ClearWorkspaceCache()

            # Force garbage collection
            gc.collect()
        except Exception as e:
            ArcGISUtils.log(f"Error cleaning up ArcGIS context: {str(e)}")
            ArcGISUtils.log(traceback.format_exc())

initialize as so in execute:

global gis_context

with ArcGISContext() as gis_context:

GISDepartmentMFM

thank you for leading me in the right direction for a proper solution to this problem

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