Autodesk AutoCAD Civil 3D Performance Enhancement

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Autodesk AutoCAD Civil 3D PerformanceEnhancementIn a continuing effort to provide high quality products, Autodesk has released anupdate which addresses a performance issue discovered by Autodesk's internaltesting team and by customers.In some cases, users were experiencing unexpectedly slow opening and savingof Civil 3D files.Affects versionsCivil 3D 2014Civil 3D 2015Civil 3D 2016Civil 3D 2017This fix is not language-specific.Install the Performance ImprovementBe sure to close Civil 3D and any other AutoCAD based application beforeinstalling updating files.You will need local administrator rights to apply the update.Important Notes:The update needs to be implemented on every user’s machine. Theperformance problem will return if an unpatched version of Civil 3D isused to open a file.Autodesk, Inc. www.autodesk.comLouisa G HollandAugust 15, 2016Page 1 of 5

The performance problem is fixed at the time a file is saved in the updatedversion of Civil 3D. The first time a user opens a file the update will not beevident. Performance will greatly improve after the first save.External references will need to be resaved to see the benefit of theupdate.Civil 3D 2016The performance issue has been addressed in Civil 3D 2016 service pack 3. Allusers must be updated to the current version to see the benefit of the update.Install Civil 3D 2016 sp3 (readme)Civil 3D 2017The performance issue has been addressed in Civil 3D 2017 service pack 1. Allusers must be updated to the current version to see the benefit of the update.Install Civil 3D 2017 sp1 (readme)Civil 3D 20141. Locate the file: C:\Program Files\Autodesk\Autodesk AutoCAD Civil 3D2014\AeccNetwork.dbx2. Check the version of this file. The old file version is 10.3.894.0 (3.17mb)3. Rename the current AeccNetwork.dbx to OLD AeccNetwork.dbx4. Download AECCNETWORK.dbx (version 10.3.902.0)5. Place the new version of aeccnetwork.dbx in c:\ProgramFiles\Autodesk\Autodesk AutoCAD Civil 3D 2014\Civil 3D 20151.2.3.4.5.Locate the file: C:\Program Files\Autodesk\AutoCAD 2015\AeccNetwork.dbxCheck the version of this file. The old file version is 10.4.524.0 (3.08mb)Rename the current AeccNetwork.dbx to OLD AeccNetwork.dbxDownload AECCNETWORK.dbx (version 10.4.940.0)Place the new version of aeccnetwork.dbx in C:\ProgramFiles\Autodesk\AutoCAD 2015\Page 2 of 5

Tips for Implementing the Improvement Enterprise-wideThis fix works when opening a file and resaving it. The first time a file is openedafter the fix is implemented, it will open slowly. After the file is re-saved, the filesize will be reduced and opening time will be reduced.Resave all SheetsFor smaller projects, an easy way to force Civil 3D to open and save multiplefiles is to use Sheetset Manager.Right-click the name of the sheet setand select Resave All SheetsScriptScripts have been provided by Autodesk as a good faith effort to assistcustomers with large numbers of effected files. Scripts are provided as-is andare not officially supported.Download the scripts from: https://autodesk.box.com/v/C3DPerformanceFixLocal admin rights are needed to run the batch file.Page 3 of 5

Function of the Scripts:The script should be run from a computer that has the appropriateversion(s) of Civil 3D installed. The script uses the command line versionof AutoCAD to open and resave drawings.The script currently does not check the version of the DWG file beforeupdating. Care must be taken that the correct script is run against theappropriate version of each Civil 3D file. More information on Civil 3Dversioning can be found here.At the conclusion of the script, a list of re-saved files is generated. Thisfile list is named temp dwg filelist 201X.txt and will be located in thesame directory in which the repair 201X.bat is found.1. Download and extract the zip file containing the scripts. Note that aeccnetwork.dbx is version-specific. Be sure to have the correct version in the same directory as itscorresponding batch file.2. Log in as administrator on a machine running Civil 3D version 2014, 2015 or2016. Permissions are needed to copy the aeccnetwork.dbx to theProgram Files folder on the local machine running the script. If you receive an Access denied error, “0 files copied,” change thepermissions of the program folder containing aeccnetwork.dbx toallow full control by the admin user.3. Launch a Windows command line (CMD.exe)4. Run the batch file and add the path to effected file folder after the batchfile name. This parameter is what directs the script to the files. UNC pathing is not supported by this BAT file. (Used a mapped driveinstead.)Page 4 of 5

The script will proceed to open and save all DWG and DWT files found in thespecified path.A list of modified files can be found in the file temp dwg filelist 201X.txt.Page 5 of 5

Install Civil 3D 2016 sp3 (readme) Civil 3D 2017 The performance issue has been addressed in Civil 3D 2017 service pack 1. All users must be updated to the current version to see the benefit of the update. Install Civil 3D 2017 sp1 (readme) Civil 3D 2014 1. Locate the file: C:\Program Files\Autodesk\Autodesk AutoCAD Civil 3D 2014\AeccNetwork.dbx 2.

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