Do not install PM99492 on DB2 9, DB2 10, and DB2 11 for z/OS
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For the benefit of DB2 for z/OS Value Unit Edition (VUE) licensing environments, DB2 for z/OS APAR PM99492 (PTFs UI12638(V9), UI12636(V10), UI12637(V11)) made changes to the DB2 for z/OS Product Name information that is returned to remote JCC based application environments, even for non VUE environments. DB2 was unaware that this information can be presented to application environments and it has been discovered that the change in this ProductName information has adversely affected many remote application environments.
APAR PI11636 has been opened to address the condition but until this APAR change is available, users should not install PM99492.
In case APAR PM99492 has been installed and experiencing issues, Customers must remove it immediately to revert the change. The DB2 service class name is returned on a connection boundary. It is not cached by JCC. Once the APAR is removed, new connections will see the old DB2 Service class name.