USS Process Environment Variable Reference
The FDR/UPSTREAM USS product makes use of certain predefined environment variables when initializing the system and processing requests. The system reads file “usenv.dat” from the current workpath to determine the setting for these values. The format of this file is a single line for each variable you wish to set of the form “variable_name=value”.
The following are the documented FDR/UPSTREAM USS specific environment variables.
Environment Variable Name | Range | Default | Description |
BACKUPBUFFERSIZE | 0 - 65500 | 32768 | The number of bytes requested in each file block read and write. Since BACKUPBUFFERSIZE is used for file I/O, the RECORDSIZE parameter is thus only used for blocking to the host, not in reading/writing data off the disk. Very large numbers may significantly degrade performance on Novell LANs. |
HOME | Valid USS Filename | n/a | The default UPSTREAM work path. |
MAXFILENAMESIZE | 20 - 230 | 230 | The maximum number of bytes that can be accepted in a file name. Smaller values reduce the backup file size, but may cause long names to be skipped. |
UPSTREAMPATH | Valid USS Filename | none | The path used to find the UPSTREAM resource and help files. |
USMAXBACKUPSIZE |
| none | Restricts the maximum size of a backup in bytes. |
USMAXCPU | 1 - 999999 | system defined default | Sets the maximum number of minutes of CPU time that can be consumed by FDR/UPSTREAM before being ABEND’ed. |
USNOREUSEADDR | n/a | n/a | If defined, UPSTREAM will not enable the SO_REUSEADDR socket option. This may potentially lock out inbound sockets after UPSTREAM terminates. |
USNORMT | enabled or disabled | disabled | USNORMT disabled Disables check for remote initiates. |
USREMOTECHECK INTERVAL | 1 - 999999 | 15000 | How often UPSTREAM checks for remote initiates (in milliseconds). |
USTRACE | enabled or disabled | disabled | Activates tracing before configuration/parameter processing. |
USUSEINODETIME FORINCR | enabled or disabled | disabled | If enabled, the I-Node time is used as well as the last modified time to indicate whether a file has changed (in incremental backups). NOTE: If you use this method and then perform restores, all restored files will be backed up on the next backup. If you restore a large number of files you should immediately after the restore perform a small non-relevant backup using the same backup profile to have the incremental date/time file updated. |