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Showing posts from February, 2011

FLOAT data type migration

Sybase FLOAT is generally used to save non integer numbers like fractions where no number of precision can hold the exact value. Sybase FLOATs do not store an exact value
"It stores slightly imprecise representations of real numbers as binary fractions at the hardware level"
http://www.sybase.com/detail?id=20313

Oracle has two data types, FLOAT and BINARY_FLOAT.
http://stackoverflow.com/questions/332492/oracle-floats-vs-number
FLOAT is really a decimal data type with exact values (basically it is a NUMERIC)BINARY_FLOAT is a binary data type which better maps to Sybase FLOAT data type If you migrate from Sybase FLOAT to Oracle FLOAT any value inserted will be treated as a specific explicit numeric, which will not behave like Sybase FLOAT.
If you migrate from Sybase FLOAT to Oracle BINARY_FLOAT then any value inserted will be treated as a binary imprecise number, just like Sybase.

SYBASE
drop table testfloat
go
create table testfloat (floatcol float)
go
insert into testfloat val…

Migration Reports 3.0

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We have revamped the migration reports in SQL Developer 3.0 to provide significantly more information about your migration. Instead of "hiding" this information under the Migration Report navigator , now the reports can be viewed by double clicking on any of the folder nodes in the Migration navigator. The reports are smart enough to tailor the information depending on where in the Migration Navigator you click.


Status

Gives you a heads up of the status of each migration project/model.
Also provides links which when double clicked, launch the migration wizard to perform the appropriate action


Summary

Provides the number of objects (tables, procedures, views , ... ) involved in each of the migration projects.It then breaks down into the number of objects in each database or owner.


Analysis

Provides fine grain details about the databases and objects being migrated.
SQL Size Chart
Visualize size of all SQL Objects
SQL Size Summary
Number of SQL Objects with similar sizes
SQL Size…