Q: z/OS license being cached ? about node-ibm_db

[bimalkjha]

@lucaskuperman Yes, the license info get cached under Common App Data Path as displayed in db2cli validate output and it is C:\ProgramData\IBM\DB2\C_Users_052664613_git_umar_umar-fun_node_modules_ibm_db_installer_clidriver in your case.

When ibm_db and actually clidriver tries to connect to Db2 for z/OS or Db2 for iSeries server, license check happens for first connection and get stored in cache file on disk. The license may be at client side or on server using db2connectactivate utility. clidriver checks for both client and server side db2connect license.
If a valid license found, clidriver cache the license info in Common App Data Path\license\nodelock and nodelock.bak files for Windows and in Install Dir\license\nodelock and nodelock.bak files for non-Windows systems. Next license check happens after 7 days only. Till 7 days, if clidriver founds license info in cache, it allows connection.
License info also get cached in .....clidriver\cfgcache\conlic.bin file for server side db2connect license.

So, to enforce license check after deleting the license file, you need to delete C:\ProgramData\IBM\DB2\C_Users_052664613_git_umar_umar-fun_node_modules_ibm_db_installer_clidriver\license\nodelock* files. Thanks.