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SELinux policies for Informix on RHEL version 7 and upwards
At startup the Informix database spawns a number of processes, that run as unconfined SeLinux processes. From the permission perspective, some of these processes run as informix user (example: cpu and encrypt vps) whilst others run as root user (l...
Enhance EXPLAIN in order to no longer need Informix server access
Currently Informix EXPLAIN generates a server side file. For developers that are working from remote machines, it becomes problematic to retrieve the explain files when they have restricted access to the Informix Server machine.
There are 2 undoc...
Allow DDL changes on a table with full row logging
We want to use CDC to replicate data changes to a different system. We do schema changes once a month, and this complicates things a lot. According to our vendor, this is a limitation for Informix only, other source systems can hande DDL changes t...
Scenario is you have 1000+ sites to backup all with the same informix server name. instead of changing the informixserver name you can set prefix on the onpsm backup. this allows for reducing the amount of buckets for this setup in cases where you...
We need to stay with Informix 12 so that our compiled 4GL will continue to work, but we would like to upgrade to RHEL8. Others have done this and it works for them, but my company has to get confirmation that this will be a supported combination f...
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...
Evaluate using io_uring for I/O in Informix Linux Platform
Create some performance tests and evaluate an architecture change in Informix to migrate AIO or Kernel AIO to using kernel io_uring Maybe it's not possible to use io_uring in Informix and nowadays, performance increase from using IO_DIRECT KAIO to...
Dbexport/dbimport validate *_LOCALE vars before accessing data files
When working with UTF8 database, DB_LOCALE and CLIENT_LOCALE are required to interact correctly with the databases. This RFE is about issuing a warning to the DBA when doing a dbexport/dbimport with CLIENT_LOCALE unset, especially when DB_LOCALE i...
Informix documentation for oncheck command should be crystal clear
Informix documentation for oncheck command does not explain clearly that this command should be run only during a maintenance window or during an off-hours period because the oncheck utility places a shared lock on system catalog tables when the d...
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