XNET started task failing with error message xntTCP900E Listener error PXNWTSS function LISTEN - 13: Access denied

Products

• SYSVIEW Performance Management Option for DB2 for z/OS
• Database Management for DB2 for z/OS - Administration Suite
• Database Management for DB2 for z/OS - Performance Suite
• Database Management for DB2 for z/OS - Recovery Suite
• Database Management for DB2 for z/OS - SQL Performance Suite
• Database Management for DB2 for z/OS - Utilities Suite
• DATABASE MANAGEMENT SOLUTIONS FOR DB2 FOR Z/OS

Issue/Introduction

The XNET started task fails upon startup with the error: xntTCP900E Listener error: PXNWTSS function LISTEN - 13: Access denied. 

Cause

The listener error -13 (Access Denied) will occur if PORT UNRSV TCP * DENY WHENLISTEN is stated in the TCPIP profile, but the port associated with the XNET STC 
has not been reserved for its use.

Resolution

Reserve the PORT (as stated in the XNET STC proc) for XNET's use.