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Enhance dbschema to generate SQL for sysuser entries
The sysadmin users is used to store:
PAM trusted users (sysauth)
trusted contexts (systcxusers, systcxattributes, systrustedcontext)
local users (syssurrogates, sysusermap)
Dbschema should be extended to allow generated DDL for:
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...
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...
When removing unused indexes the first step we want is to be able to make index invisible to queries similar to the Oracle feature. As the index is still being maintained the rollback to make the index visible to queries is quick.
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...
If a customer needs to change the locale of a database, wants to standardize to a common locale etc then the only option is to unload the data and reload. On small databases this might be possible but for 99% of the real systems this is impractica...
When a database has been created in a single (not root) dbspace and the dbspace has been greatly expanded with large tables that are subsequently moved to separate dbspace, the chunks used for original dbspace expansion may contain TBLSpace extent...
I'm trying to check if a serial value has reached its upper limit. I noticed the following unpleasant behaviour. In the sysmaster tables sysptnhdr and sysactptnhdr the currently used serial values are in three fields for the datatypes serial, seri...
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...
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