credcheck - provides few general credential checks, which will be evaluated during the user creation, during the password change and user renaming. By using this extension, we can define a set of rules to allow a specific set of credentials, and a set of rules to reject a certain type of credentials. This extension is developed based on the PostgreSQL's check_password_hook hook.

fasttrun - provides transaction unsafe function to truncate temporary tables without growing pg_class size. This module is required for 1C Enterprise support. Fast truncate operation is not transactional, so its results cannot be rolled back and become immediately visible in all sessions regardless of isolation level.

fulleq - provides additional equivalence operator for compatibility with Microsoft SQL Server. This module is required for 1C Enterprise support.

hypopg - adds support for hypothetical_indexes. A hypothetical or virtual index is an index that does not actually exist. Thus, no CPU, disk, or any other resource is required to create. It is useful to know if certain indexes can improve performance for problematic queries, as you can know if Tantor will use those indexes or not without having to spend resources creating them.

mchar - designed to improve 1C Enterprise support, most popular Russian CRM and ERP system. It implements types MCHAR and MVARCHAR, which are bug-to-bug compatible with MS SQL CHAR and VARCHAR respectively. Additionally, these types use the ICU library for comparison and case conversion, so their behavior is identical across different operating systems. Tantor DBMS also includes citext extension which provides types similar to MCHAR. But this extension doesn’t emulate MS-SQL behavior concerning end-of-value whitespace.

online_analyze - performs activation of statistic collection right after INSERT/UPDATE/DELETE/SELECT INTO for involved tables.

orafce - represents a set of functions that provide compatibility with Oracle databases.These functions allow simplifying of the migration to Tantor and reducing the expenses on applications' reconfiguration.

Optimized Row Columnar(ORC) - provides column method of data storage with a possibility of compression to decrease in-out volume and assure high performance. Applicable to append-only, e.g. data time series and displays of corporate storages.

page_repair - designed to repair separate corrupted pages using backup data from the replication server. It allows saving reparation time as it does not require reparation of all data, but separate pages.

pg_background - allows executing commands in the background mode such as VACUUM and CREATE INDEX CONCURRENTLY from SQL along with launching autonomous transactions.

pg_cron - represents a cron-based job scheduler working within the database as an extension. It uses the same syntax as regular cron, but it allows scheduling Tantor DBMS commands directly from the database.

pg_hint_plan - allows configuring plans of SQL queries execution using so called "hints" in SQL comments. This gives an opportunity to compensate the scheduler errors occurring in critical cases.

pg_partman - allows creating and managing both time-based and serial-based table partition sets.

pg_qualstats - saves statistic data on found predicates in WHERE operators and JOIN operations. This allows analysing the most frequent qualifiers (predicates) in the database, and also to identify correlated columns by defining which columns are most frequently requested together.

pg_repack - removes bloat from tables and indexes, and optionally restores the physical order of clustered indexes. Unlike CLUSTER and VACUUM FULL it works online, without holding an exclusive lock on the processed tables during processing.

pg_store_plans - provides the means to keep track of the execution plan statistics for all SQL statements executed by the Tantor server.

pg_variables - provides functionality to work with variables of different types in the current user session.

pg_wait_sampling - provides information about current waiting event for a certain process. However, to collect a descriptive statistics of server behaviour a user must repeatedly collect the current waiting event. This module represents an extension for collecting sample statistics of waiting events that prevent needless sampling of the current event waiting.

pgaudit - provides detailed session and/or object audit logging via the standard Tantor DBMS logging facility. The goal of the pgAudit is to provide Tantor DBMS users with capability to produce audit logs often required to comply with government, financial, or ISO certifications.

pgq - provides generic, high-performance lockless queue with simple API based on SQL functions.

pgsql-http - allows making a trigger that calls a web service available to return a result, or makes the service update according to the new state of the database.

plantuner - provides a possibility to manage the scheduler by providing prompts that make the optimizer partially ignore its algorithm.

pgauditlogtofile - is an addon to pgAudit than will redirect audit log lines to an independent file, instead of using PostgreSQL server logger. This will allow us to have an audit file that we can easily rotate without polluting server logs with those messages. Audit logs in heavily used systems can grow very fast. This extension allows to automatically rotate the files based in a number of minutes.

dbcopies_decoding - supports the database copy mechanism and data accelerator.

The first release of Tantor Certified is 15.6.1. Significant changes can be found on the related page.

All other changes see in Release Notes.

Detailed information on how to optimally configure the Tantor Certified parameters for working with 1C can be found on the page.