A primary object to be stored to the DB2 sublevel of the OAM storage hierarchy can be inserted into the 4 K object table, the 32 K object table, or the LOB Storage Structure. Figure 1 shows how OAM uses the object size, the LOB keyword in the IEFSSNxx PARMLIB member, and the SYSIBM.SYSTABLES table to determine which table should be used to store the object.

Figure 1. DB2 Storage Decision Tree