uxhstpurge Abort coredump if called in Uproc with Creation of sapuc standard filebuf failed

Products

• CA Automic Dollar Universe

Issue/Introduction

The binary uxhstpurge crashed generating a coredump when it's launched via a uproc script to purge the history file of the manager SAP.

Example of the command used:

$UXSAP_DIR_EXEC/uxhstpurge $S_NOEUD

The output generated in the log:

Creation of sapuc standard filebuf failed.
/DUAS_NODE/data/exp/upr/U000000016.000: line 10: 21312: Abort(coredump)

Environment

Dollar Universe on Unix/Linux

Cause

The problem is due to the SAP library initialization while being launched inside a script.

The error in the log "Creation of sapuc standard filebuf failed" indicates a low-level failure in the SAP Common Unicode (SAPUC) layer when trying to initialize standard file buffers.

The SAP library NWRFC does not find the FD 0 so it gets the error:
fcntl(0, F_GETFL) = -1 EBADF (Bad file descriptor)

Resolution

Modify the command used in the Uproc to redirect stdin to force FD 0 creation, hence change the call to the binary failing appending </dev/null

$UXSAP_DIR_EXEC/uxhstpurge  $S_NOEUD </dev/null