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Hakik Paci

Publications and source records attributed to Hakik Paci.

2 recordsLinked to original sources
arXiv2012

Protecting oracle pl/sql source code from a dba user

In this paper we are presenting a new way to disable DDL statements on some specific PL/SQL procedures to a dba user in the Oracle database. Nowadays dba users have access to a lot of data and source code even if they do not have legal permissions to see or modify them. With this method we can disable the ability to execute DDL and DML statements on some specific pl/sql procedures from every Oracle database user even if it has a dba role. Oracle gives to developer the possibility to wrap the pl/sql procedures, functions and packages but those wrapped scripts can be unwrapped by using third party tools. The scripts that we have developed analyzes all database sessions, and if they detect a DML or a DDL statement from an unauthorized user to procedure, function or package which should be protected then the execution of the statement is denied. Furthermore, these scripts do not allow a dba user to drop or disable the scripts themselves. In other words by managing sessions prior to the execution of an eventual statement from a dba user, we can prevent the execution of eventual statements which target our scripts.

cs.DB↗
arXiv2011

Adding a new site in an existing Oracle Multimaster replication without quiescing the replication

This paper presents a new solution, which adds a new database server on an existing Oracle Multimaster Data replication system with Online Instantiation method. During this time the system is down, because we cannot execute DML statements on replication objects but we can only make queries. The time for adding the new database server depends on the number of objects, on the replication group and on the network conditions. We propose to add a new layer between replication objects and the database sessions, which contain DML statements. The layer eliminates the system down time exploiting our developed packages. The packages will be active only during the addition of a new site process and will modify all DML statements and queries based on replication objects.

cs.DB↗