NonStop NS-Series Database Migration Guide

Migrating an Enscribe Database

HP Integrity NonStop NS-Series Database Migration Guide—540469-001

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DDL Compiler Problem Symptoms

the definitions, translates the definitions to FUP commands, or generates object-

definition source code in or more programming languages.

A DDL dictionary is a repository for the DDL definitions. It helps to maintain

consistency so that the same data, regardless of where it is used, is described in the

same way. DDL dictionaries provide descriptions of all the applications that use an

Enscribe database. Each application can have more than one dictionary, or the

application can maintain all its data in a single dictionary. The only restriction is that

only one dictionary can reside on a subvolume. The name of the dictionary is the

subvolume name.

DDL Compiler Problem Symptoms

When you move Enscribe files and applications from a NonStop S-series system to an

Integrity NonStop NS-series system, the dictionary that was created on each

subvolume in the TNS/R environment cannot be updated by the DDL compiler in the

TNS/E environment. From the Integrity Nonstop NS-series system, you must convert

the dictionaries for the DDL compiler on that system.

If you attempt to update a dictionary from the Integrity NonStop NS-series system

before you convert it, the DDL compiler returns this error message:

Example: Converting a DDL Dictionary

Before you convert a DDL dictionary, create a backup copy of that dictionary.

To convert the dictionary from the DDL compiler, enter the DDL commands shown in

bold in this example:

DDL Compiler T9100H01 - (01MAY05) SYSTEM \ENSCRIBE2

Dictionary opened on subvol $DATA4.ENDICT for update access.

!?DDL TEMP

Output source for DDL is opened on $DATA4.ENDICT.TEMP

!OUTPUT *

Loading Record EMP

DDL source output produced for EMP.

Loading Record EMPREL

DDL source output produced for EMPREL.

Loading Record EMPENT

DDL source output produced for EMPENT.

!?NODDL, DICT !, COMMENTS, SOURCE TEMP

?DICT

This dictionary was created by a different version

of the DDL compiler. It can be read but not updated

by this DDL compiler.

To convert your dictionary, type the following:

?DDL TEMP

OUTPUT *

?NODDL, DICT! ,COMMMENTS, SOURCE TEMP