Common limitations

(1) Limitations on UTF-8 code conversion between host types and versions

(2) Limitations on UTF-8 code conversion via HULFT-HUB

In the transfer via HULFT-HUB Server, you can select the sending side conversion and receiving side conversion only in either of the following cases:

• When there is only one host on the receiving side and the Transfer Routing is set to "Auto arrangement"

• When the Code Set for Transfer and the Standard for Japanese on all the hosts on the receiving side including HULFT-HUB Server are consistent

In other cases, you can only specify the receiving side conversion.

In conversion on the receiving side, if the host on the receiving side is HULFT Ver.6 or HULFT for Mainframe lower than Ver.7.2.0, the conversion to or from UTF-8 is not available.

(3) Setting the data transfer method

In HULFT7 or higher, you can select the Transfer Speed Priority Mode or the Error Detection Priority Mode as data transfer method. The behavior of HULFT when the Transfer Speed Priority Mode is selected is described below:

• The timing of the error detection of transfer is different from the one in conventional version, and the detection may become later.

• Timing that the cancellation of the transfer becomes effective is different from the one in conventional version, and it may become later.

• When an error in transfer occurs, inconsistency may occur between the log record count in the Send Log and that in the Receive Log.

• When transferring, increase in resource volume and network traffic may occur.

To set the data transfer method, both sending host and receiving host must use HULFT Ver.7 or higher. In addition, HULFT-HUB Server to be routed through must be Ver.2.2 or higher, if these hosts use HULFT-HUB. If you use HULFT of lower version (namely, HULFT Ver.6 or lower), data transfer is performed in the Error Detection Priority Mode.

If HULFT Ver.7 or higher is installed, Transfer Speed Priority mode is enabled. If you intend to use Error Detection Priority mode, it is necessary to change the setting for Framed Message Transfer Type to "N".

(4) Limitations on data verification function

To use the data verification function, the hosts on both sending side and receiving side must install HULFT Ver.7 or higher.

If the host on the receiving side is lower than Ver.7, the data verification cannot be performed even if the host on the sending side is Ver.7 or higher. The application returns error if the host on the sending side is lower than Ver.7 due to inability of data verification of the host on the receiving side, even if the host on the receiving side is Ver.7 or higher and the data verification is enabled.

(5) Operation Log

The operation log is not output to the host of which version is lower than Ver.7, because it is a newly introduced function in HULFT Ver.7 or higher.

When the host on the sending side is HULFT Ver.7 or higher and the host on the receiving side is lower than HULFT Ver.7, the operation log is output to the host on the sending side.

If the host on the sending side is lower than Ver.7 and the host on the receiving side is Ver.7 or higher, the operation log is not output to the host on the receiving side, because the host on the receiving side cannot acquire the required information for the operation log from the host on the sending side.

Figure 8.1 Relation of Sending and Receiving Host Versions and Operation Log Output

(6) Limitations on host types and versions in code conversion with hosts using Japan (Katakana) Extended for IBM

In the transfer with HULFT in which EBCDIC Set is set to "Japan (Katakana) Extended for IBM", there are some limitations in code conversion depending on the combination of the following points:

• Host type of a remote host, namely Type Win-UX host or Type MF-IBMi host

• Product version of HULFT on remote host, namely Ver.7.3 or higher or lower than Ver.7.3

Table 8.4 and Table 8.5 show availability of code conversion when the EBCDIC Set of the sending-side host is "Japan (Katakana) Extended for IBM" and when the EBCDIC Set of the receiving-side host is "Japan (Katakana) Extended for IBM", respectively.