Hi, I faced the same problem. Even I removed and recreated the schema instance I got errors in sde_setup.log file as shown below: [Mon Oct 7 08:16:12 2013] Error creating GDB_Tables_Last_Modified table... [Mon Oct 7 08:16:12 2013] ERROR Creating Geodatabase tables , Error = -51 ,EXT_Error = -942 ,EXT_ERROR1 = Error executing stored procedure sde.instances_util.check_instance_table_conflicts ,EXT_ERROR2 = ORA-00942: table or view does not exist After deleting the orphan record from SDE.INSTANCES related to deleted instance, the problem was solved. Thanks a lot! Sincerely.
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