Applying PTFs to the Catalog Component

To activate program temporary fixes (PTFs) and other service applications to the modules that make up the catalog component, do either of the following:

IPL the system. You must perform an IPL if maintenance changes any load modules other than IGG0CLX0, since those load modules are in SYS1.LPALIB. You must also specify CLPA in response to message IEA101A, or use the MLPA function to temporarily bring in the changed modules.
Refresh the LINKLIST LOOKASIDE by issuing the MODIFY LLA,REFRESH command. Then perform a restart of the Catalog Address Space. A restart can be done by issuing the MODIFY CATALOG,RESTART operator command; see Restarting the Catalog Address Space for more information. This method can be used if the only load module changed by maintenance is IGG0CLX0.

If you change load modules other than IGG0CLX0 and do not follow the procedures that are outlined above, maintenance will not be properly applied to the running system. You might receive unpredictable results, or problems that maintenance should have fixed might still occur.