In some cases it is necessary to replace the JCo of ECTR with a latest version. This replacement can be done either by installing a current version of ECTR or by manually replacing the JCO libraries. Since JCo is usually downward compatible, an exchange with a higher version is possible without problems.
This guide explains the manual exchange of the JCo libraries.
Check the currently used version
Open the console logfile from logfile directory. Search for this line:
JCO version: 3.0.20 (2019-09-05)
Download the current available version
You can find the latest version here.
Download the latest "Microsoft Windows and Windows Server" - "64-bit x86*" file for the appropriate revision level.
If you're running the 5.1 installation on a 32 bit platform (quite unlikely), you have to download "Microsoft Windows and Windows Server" - "32-bit" file for the appropriate revision level.
For ECTR older than 5.1.16 / 188.8.131.52 use JCO 3.0.x. JCo 3.1 is not compatible with 184.108.40.206 and older.
Do not use JCo 3.1.4 with ECTR because of known issues.
Caused by: java.lang.NullPointerException: Cannot invoke "Object.hashCode()" because "<parameter1>" is null at java.base/java.util.Hashtable.get(Unknown Source) at com.sap.conn.jco.util.I18NConverters.getConvertXToC(I18NConverters.java:27) at com.sap.conn.jco.rt.Converter.init(Converter.java:54) ...
JCo 3.1.7 is not compatible with 220.127.116.11 / 18.104.22.168 and older.
- Replace sapjco3.dll + sapjco3.pdb in directory <ECTR>\basis\sys\win\lib64.
If you're running the 5.1 installation on a 32 bit platform, you have to replace sapjco3.dll + sapjco3.pdb in directory <ECTR>\basis\sys\win\lib32.
- Replace sapjco3.jar in directory <ECTR>\basis\libraries.
Related SAP Notes/KBAs
2233626 - ECTR: SAP Engineering Control Center 5.1 FRONT - Patches
2779488 - ECTR: SAP Engineering Control Center 5.2 FRONT - Patches