b2d3d22d_exes_Activity_on_DB2_for_i5_OS__System_column_name
[Column name] ESTIMATED_CREATION_TIME [Data type] INT [Description] Estimated number of seconds for index creation [System column name] 
ESTTIME
IBM Redbooks | Index Advisor Surfaces Maintained Temporary Indexes Activity on DB2 for i5/OS
System column name