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Informix has a rows/page limit of 255 rows/page. Perhaps this was not a problem originally but over time we have seen new features: larger page sizes (up to 16 kB against 2 kB or 4 kB previously, dependent on operating system). compression option....
Limit open partitions to avoid very large rsam pool
In systems with a lot of tables informix can have a very large rsam pool. This can cause informix to allocate so much memory it starts swapping or in memory limiting versions (like workgroup, express etc.) to even let the engine crash. Sometimes t...
Add support for an asynchronous/non-blocking Java API
Add support for an asynchronous/non-blocking Java API called Reactive Relational Database Connectivity (R2DBC) (https://r2dbc.io/). The R2DBC driver list includes several DBMS, but not Informix. Customer case: In Huge systems with lots of users se...
Allow SPL variables to be used to define index directives.
Inside a stored procedure allow the index name for a directive to come from a variable:...define v_bs_index varchar(100);define p_id like tBS.id,...let v_bs_index = ( select cfg from Cfg where group = 'INDEXES' and name = 'TBS_INDEX' )...
Ability to sync tables to HDR & RSS secondaries when converting from RAW to STANDARD mode.
It is significantly faster to load a table in TYPE(RAW) mode than TYPE(STANDARD) mode. However, this option is not practical for sites using HDR and/or RSS secondary servers for replication as RAW mode tables do not replicate forcing the site to b...
Full HDR switch between primary and secondary with a single command and without any downtime
We have 2 servers with 2 HDR instances each.
For each cluster we have also 2 connection manager each.
On server one there is the primary of cluster 1 and the secondary of cluster 2
On server two there is the primary of cluster 2 and the seconda...
Within Informix the username is defined as char(32). The Informix feature "Informix trusted context" enable Informix to be used with Federated Authentication, in such cases the impersonated user is identified using an email address. In view of thi...
This feature is about having native support to version data within the table. The application will always be able to access the most current data, however through pseudo columns or via other means older version of the data is available. This featu...
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