| Purge a package VRC derivation structure procedure |  |
| Procedure aim If you create many own package VRCs, derived from each other, the derivation structure can get very long. The consequences of a cluttered VRC structure are: A decrease in system performance due to the longer derivation structure A cluttered directory structure due to a large number of newly-created package VRCs The maximum depth of the package VRC tree is 40. Purging a package VRC reduces the depth of the package VRC tree, which makes it possible to add a new package VRC to the tree. When you purge a package VRC: software components that are no longer used, for example, because of a new customization on the same component in a more recent package VRC, are deleted. The components that are still in use are copied to the package VRC that is derived from the purged VRC. Procedure result and prerequisites Result As a result of this procedure, a shorter derivation structure is created and, therefore, better performance is achieved. In addition, the directory structure on your operating system, for example, UNIX or Windows, is more transparent. Prerequisites The status of the package VRC must be Expired. Procedure summary The following list shows the procedure steps and the corresponding sessions. Change the status of the package VRC to Expired - Package VRCs (ttadv1511m000) Purge the package VRC - Purge Entire Package VRC (ttadv6255m000) Recreate the user files - Convert to Runtime DD (ttams2201m000) Related topics Purge a package VRC derivation structure procedure details |