Database Technologies

Till PPAS 9.0, UTL_SMTP package has no specific named Exceptions for Transient_error, Invalid_operation and Permanent Error. However, Oracle provide following types of named exceptions for SMTP: 1. INVALID_OPERATION: Raised when an invalid operation is made. In other words, calling API other than write_data(), write_raw_data() or close_data() after open_data() is called, or calling write_data(), write_raw_data() or close_data() without first calling open_data(). 2. TRANSIENT_ERROR: Raised when receiving a reply code in 400 range. 3. PERMANENT_ERROR: Raised when receiving a reply code in 500 range. Oracle users who use SMTP packages, they also use above exceptions extensively to track the SMTP Error/Message and perform some handling on basis of exception. Since, till now PPAS doesn't have these exceptions, therefore people stuck on finding workaround for such exception. To make this easy, I did some research and made following workaround, which user can use in PPAS for...

PPAS 9.1 Beta 1 is released. So, I thought to write about it and New Features which are coming. Best part of PPAS 9.1 is that it has all features of PostgreSQL 9.1, which I have already discribed in my series of 9.1. Links are given below: 1. PostgreSQL Object Manipulation Feature s 2. New Replication and Recovery Feature s 3. Queries improvement of Core PostgreSQL 9.1 4. Updateable Views using INSTEADOF Trigger in PostgreSQL 9.1 5. Utility Operation Improvements 6. Upsert/Merge using Writeable CTE 7. New Functions/Improvement 8. Object Functions Improvement in PostgreSQL 9.1 9. Client Application Improvement in PostgreSQL 9. 1 10. Asynchronous/Synchronous Replication There are many other features in PostgreSQL 9.1, which requires some time to write with example. However, below is list of those Improvements: 1. Unlogged Tables 2. FOREACH IN ARRAY in PL/pgSQL 3. Pl/Perl Improvement:     a. Record type support     b. Pl/perl array argument map ...

In Series of writing Blog on New features in PostgreSQL 9.1, I thought to write and give example on Object Manipulation Changes in 9.1. Let see what we have in Object Manipulation Features in 9.1 1. CREATE/ALTER/DROP EXTENSIONS PostgreSQL 9.1 has different way of managing Contrib Modules. User can now install Contrib Module using Command as given below: psql -c "CREATE EXTENSION pgcrypto;" postgres CREATE EXTENSION If user wants to keep its contrib/Extension module in some other schema then user can try ALTER Command as given below: postgres=# CREATE schema contrib_modules; CREATE SCHEMA postgres=# alter extension pgcrypto set schema contrib_modules; ALTER EXTENSION Simlarly, ALTER EXTENSION has many options, some options are given below: Description: change the definition of an extension Syntax: ALTER EXTENSION extension_name UPDATE [ TO new_version ] ALTER EXTENSION extension_name SET SCHEMA new_schema ALTER EXTENSION extension_name ADD member_object ALTER EXTENSION ...