Question1Replies808Views ArjanM04 Member since 2014 39 posts Achmea Posted: October 6, 2017Last activity: October 16, 2017 Closed Solved We were unable to generate a dedicated database table for you. This will cause performance problems when using this data typeHow to fix the warning:“Warning : We were unable to generate a dedicated database table for you. This will cause performance problems when using this data type. Please click here to fix this.”We did expose the colums, see attachment, but we still get this message. Low-Code App Development Dev/Designer Studio ×Close popoverFacebookTwitterLinkedinEmail Copy Link Copied! Moderation Team has archived post This thread is closed to future replies. Content and links will no longer be updated. If you have the same/similar Question, please write a new Question. Accepted Solution Posted: 3 years agoRaviteja_CH PEGA replied to ArjanM04Hi Arjan, From what I understood from the doc that you attached, Is it always necessary to expose all columns we use in the data page to the database, is your question. Yes, all the columns present in the local data storage tab of the Data object must be optimized. If not, the export doesn't work. --Ravi.