While typing a search criteria in a LOV in ADF, if you want to make the search free of Upper or Lower case characters then you can add the following method in the VOImpl java file -
public CriteriaClauses buildViewCriteriaClauses (ViewCriteria viewCriteria){
viewCriteria.setUpperColumns(true);
CriteriaClauses criteriaClauses = super.buildViewCriteriaClauses(viewCriteria);
return criteriaClauses; }
public CriteriaClauses buildViewCriteriaClauses (ViewCriteria viewCriteria){
viewCriteria.setUpperColumns(true);
CriteriaClauses criteriaClauses = super.buildViewCriteriaClauses(viewCriteria);
return criteriaClauses; }