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Known Issues in Release 2.0

Reference Topic/Area Issue Description / Workaround

EXT-1107 Netezza Spatial

Package

A ST_DWithin function performed on two points does not return

TRUE when increasing the distance value past 18945535.

nzsql -u $NZ_USER -pw $NZ_PASSWORD -c "SELECT

ST_DWithin(ST_Point(0,0), ST_Point(0,1), 18945535,

'meter', 'wgs84');"

ST_DWITHIN

------------

(1 row)

nzsql -u $NZ_USER -pw $NZ_PASSWORD -c "SELECT

ST_DWithin(ST_Point(0,0), ST_Point(0,2), 18945536,

'meter', 'wgs84');"

ST_DWITHIN

------------

(1 row)

EXT-1223 Netezza Matrix

Engine

All matrices in a database are owned by INZAUSER. Also, any

"inza user" in the database runs the Matrix Engine commands as

INZAUSER. Therefore, if user A creates a matrix, then user B

can see the matrix. It is not possible to grant that permission (or

revoke it) to make matrices invisible to users.

This is in conflict with all other database objects in a Netezza

system. Objects have permissions granted on them (or revoked

on them) to users - otherwise the users cannot see them or oper-

ate on them.

Furthermore, any Netezza Analytics user in a database can drop

any other user's matrices. There is no protection.

EXT-1224 Netezza Matrix

Engine

(Related to EXT-1223)

Users who have not been given permissions to a particular data-

base on the Netezza System may still be able to list, view, print,

and delete matrices on that database, despite not being able to

affect tables. For example:

CALL nzm..list_matrices();

CALL nzm..print('ones5x5');

CALL nzm..delete_matrix('ones5x5');

EXT-1225 Netezza Matrix

Engine

If a user is granted Netezza Analytics permissions in a particular

database, then that user can use Netezza Analytics functions in

any other database where they have user permissions (except

nzMatrix functions).

Note that when you grant a user access to Netezza Analytics,

you are performing a global operation, not a per-database opera-

tion, with the exception of nzMatrix which is database-local.

While working as designed, improper use may cause issues.

EXT-1248 KNN, KMEANS DATE type is not supported by KNN and KMEANS algorithms

EXT-1249 MUTUALINFO The MUTUALINFO procedure may hang when run on a IBM

Netezza 1000-12.

EXT-1255 Netezza Analytics Moments, correlations, covariance, Bayesian networks, and

standardization/normalization stored procedures do not allow

NULL values. To use these stored procedures, all NULL values

must be removed from the data.

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