2. Z and I Emulator for Windows TCP/IP Data Transfer fails with terminated transfer function

Problem

TCP/IP Data Transfer might fail with the error "Transfer function will be terminated". This message provides a checklist for iSeries or AS/400 host requirements.

Resolution

To resolve this problem, take the following steps to check the status of the iSeriesTM or AS/400® host requirements:

Confirm that the iSeries or AS/400 host has the following required licensed program(s) installed (type GO LICPGM and select Option 10 - Display Installed Licensed Programs: ):

For V5Rx:
5722TC1 *BASE iSeries TCP/IP Connectivity Utilities/400
5722SS1 Option 12 OS/400 ® - Host Servers

For V4R5:
5769TC1 *BASE TCP/IP Connectivity Utilities for AS/400
5769SS1 Option 12 OS/400 - Host Servers

Verify that you have a Relational Database entry for YOURSYSTEM at REMOTE Location = *LOCAL (issue the command WRKRDBDIRE to "Work with Relational Database Directory Entries"):
```
RELATIONAL DATABASE . . . . . . : YOURSYSTEMNAME
REMOTE LOCATION:
REMOTE LOCATION . . . . . . . : *LOCAL
TEXT . . . . . . . . . . . . . . :
```
Verify that user ID QUSER is enabled (issue the following command for profile QUSER):
```
WRKUSRPRF USRPRF(QUSER)
```
Verify that TCP/IP is active, using the following command (This is required before any TCP/IP processing):
```
START TCP/IP (STRTCP) COMMAND
```
If you have not already done so, issue the following "Start Host Server" command:
```
STRHOSTSVR SERVER(*ALL)
RQDPCL(*TCP) 
```

The following sets of instructions are to verify that the required server daemon and prestart server jobs are active for DDM, Database, and File Transfer functions.

For DDM, take the following steps:
1. Verify that the DDM daemon is active. Use WRKACTJOB to find the QRWTLSTN job under QSYSWRK. This daemon is automatically started when the STRTCP command is run, if the AUTOSTART parameter is set to *YES on the CHGDDMTCPA command <F4>. If the daemon does not start when the STRTCP command is run, you can start the daemon by issuing the following command:
```
STRTCPSVR SERVER(*DDM)
```
  Note: If the DDM daemon still fails to start with error message CPF3E30, refer to APAR SA81267.
2. Verify that the DDM prestart server jobs are active. Use WRKACTJOB to find the server jobs named QRWTSRVR. For V5R2 and newer releases, the prestart jobs run in the QUSRWRK subsystem, but can be configured to run under other subsystems. They are automatically started with the subsystem. If these jobs are not active, you can issue the start prestart job command STRPJ <F4>. For host versions prior to V5R2, these jobs runs in the QSYSWRK subsystem.
For Database, take the following steps:
1. Verify that the subsystem for the Database server daemon is active. The subsystem is QSERVER, and the daemon job is named QZDASRVSD.
2. Verify that the Database prestart server jobs are active. For V5R1 and newer releases, the prestart jobs are QZDASOINIT and QZDASSINIT. Both jobs run in the QUSRWRK subsystem, but can be configured to run under other subsystems. As with the DDM prestart jobs, these jobs are automatically started with the subsystem, but if they are not active, they can be started with the STRPJ command.
3. If port 8478 is not active, end and restart the Database server job QZDASRVSD using the following commands:
```
ENDHOSTSVR *DATABASE
STRHOSTSVR *DATABASE
```
For File Transfer, take the following steps:
1. Verify that the subsystem for the transfer function server is active. The subsystem is QSERVER, and the daemon job is named QZDASRVSD.
2. Verify that the transfer function prestart server jobs are active. The prestart job is QTFPJTCP. This job runs in the QSERVER subsystem.