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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....
Allow Informix to accept Non PAM aware clients to connect when using PAM PASSWORD mode
Standard Informix Authentication on unix will perform a getpwnam() call to retrieve the encrypted shadow password from the OS, it will then compare an encrypted version of the password supplied by the client against this, and if they match, authen...
Hi, my customer is a long haul IDS customer who loves it. A few years ago, his team fell in love with Tableau, which resolved many business cases for his company. Unfortunately, after getting more and more demanding with Tableau functionality, and...
Developers have the Informix Client SDK installed on their workstations / application development machines.
There is the need to be able to dump the Informix databases schemas definitions, but the SDK does not provide any such tool.
To work arou...
Enhance availability of readahead performance details
With the ubiquity of intelligent storage, the value of readahead in the Informix server is reduced and excessive readahead can be detrimental to performance. However, since the introduction of the AUTO_READAHEAD parameter and the associated change...
L0 and L1 backups of informix are taking almost same time since it seems that is limited by disk reading performance: we are using IBM spectrum backup to backup.
From IFX logs we see that they are using /usr/informix/server12/bin/onbar_d...
Some customers are constrained and need to continue to use Informix 32-bit CSDK drivers. Their applications currently use the Informix 32-bit libraries & there are often build constraints to moving to a 64-bit CSDK.
Allow MAX_PDQPRIORITY to be configurable per user.
We want to Informix to be able to use PDQ but we would not want 3rd party logins to be able to use PDQ and impact processing. The existing onconfig parmeter should be a default is it is not defined for the user.
Every query which need to group by and concat few columns is impossible with informix. For example for this SQL : select t.tabname, c.constrname
from sysconstraints c, systables t , outer syschecks k
where t.tabname = 'my...
about 2 years ago
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...
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