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Many times a DBA is called to check upon a slow process. Most of the times those processes are running a slow query.Sometimes it's hard to know if the query is using the best query plan or not. A DBA can reproduce the query, but it it was prepared...
Allow placement of tablespace BYTE and TEXT data in a separate dbspace from the table's base row data.
Allow specifying a normal dbspace for a BYTE or TEXT column to isolate IOs for the blob data from main row data for the table. This would be logged space just like IN TABLE as opposed to IN blobspace blob pages.
SQL interface to obtain the temporary space usage (tables, hash, sorts...)
A DBA and possibly a programmer needs an easy way to monitor who is responsible for the temporary space usage.Currently it's possible a user may be consuming a lot of temporary space and impacting other sessions, without the DBA being able to quic...
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.Thi...
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, authe...
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.
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...
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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