ORA-00600: internal error code, arguments: [13013] ORA-00600: internal error code, arguments: [13013] when resolving shutdown immediate. Error occurs and the solution is as follows: SQL> shutdown immediateORA-00600: internal error code, arguments: [13013], [5001], [483], [4198090], [64], [1, 4198090], [17], [] SQL> select status from v $ instance; STATUS--open SQL> select object_name from dba_objects where object_id = 483 2; OBJECT_NAME--------------------------------------------------------------------------------MON_MODS $ SQL> select index_name from dba_indexes where table_name = 'mon _ mod $ '; INDEX_NAME------------------------------I_MON_MODS $ _ obj SQL> alter index I _mon_mod $ _ OBJ rebuild; Index altered. SQL> shutdown immediateORA-00600: internal error code, arguments: [13013], [5001], [483], [4198090], [64], [4198090], [17], [] SQL> set pagesize 0SQL> set long syntax SQL> select dbms_metadata.get_ddl ('index', 'I _ mon_mod $ _ OBJ') from dual; CREATE UNIQUE INDEX "SYS ". "I _mon_mod $ _ OBJ" ON "SYS ". "mon_mod $" ("OBJ #") PCTFREE 10 INITRANS 2 MAXTRANS 255 compute statistics storage (INITIAL 65536 NEXT 1048576 MINEXTENTS 1 MAXEXTENTS 2147483645 PCTINCREASE 0 FREELISTS 1 freelist groups 1 BUFFER_POOL DEFAULT) TABLESPACE "SYSTEM" SQL> drop index I _mon_mod $ _ OBJ; Index dropped. SQL> CREATE UNIQUE INDEX "SYS ". "I _mon_mod $ _ OBJ" ON "SYS ". "mon_mod $" ("OBJ #") 2 PCTFREE 10 INITRANS 2 MAXTRANS 255 compute statistics 3 STORAGE (INITIAL 65536 NEXT 1048576 MINEXTENTS 1 MAXEXTENTS 2147483645 4 PCTINCREASE 0 FREELISTS 1 freelist groups 1 BUFFER_POOL DEFAULT) 5 TABLESPACE "SYSTEM"; Index created. SQL> shutdown immediateORA-00600: internal error code, arguments: [13013], [5001], [518], [4198419], [162], [4198419], [17], [] SQL> select object_name from dba_objects where object_id = 518; COL_USAGE $ SQL> select index_name from dba_indexes where table_name = 'col _ USAGE $ '; I _COL_USAGE $ SQL> select dbms_metadata.get_ddl ('index', 'I _ COL_USAGE $') from dual; CREATE UNIQUE INDEX "SYS ". "I _COL_USAGE $" ON "SYS ". "COL_USAGE $" ("OBJ #", "INTCOL #") PCTFREE 10 INITRANS 2 MAXTRANS 255 compute statistics storage (INITIAL 65536 NEXT 1048576 MINEXTENTS 1 MAXEXTENTS 2147483645 PCTINCREASE 0 FREELISTS 1 freelist groups 1 BUFFER_POOL DEFAULT) TABLESPACE "SYSTEM" SQL> drop index Limit $; index dropped. SQL> CREATE UNIQUE INDEX "SYS ". "I _COL_USAGE $" ON "SYS ". "COL_USAGE $" ("OBJ #", "INTCO 2 L #") 3 PCTFREE 10 INITRANS 2 MAXTRANS 255 compute statistics 4 STORAGE (INITIAL 65536 NEXT 1048576 MINEXTENTS 1 MAXEXTENTS 2147483645 5 PCTINCREASE 0 FREELISTS 1 freelist groups 1 BUFFER_POOL DEFAULT) 6 TABLESPACE "SYSTEM "; create unique index "SYS ". "I _COL_USAGE $" ON "SYS ". "COL_USAGE $" ("OBJ #", "INTCO * ERROR at line 1: ORA-00904:" INTCOL # ": invalid identifier SQL> CREATE UNIQUE INDEX" SYS ". "I _COL_USAGE $" ON "SYS ". "COL_USAGE $" ("OBJ #", "INTCOL #") 2 PCTFREE 10 INITRANS 2 MAXTRANS 255 compute statistics 3 STORAGE (INITIAL 65536 NEXT 1048576 MINEXTENTS 1 MAXEXTENTS 2147483645 4 PCTINCREASE 0 FREELISTS 1 freelist groups 1 BUFFER_POOL DEFAULT) 5 TABLESPACE "SYSTEM"; Index created. SQL> shutdown immediateDatabase closed. database dismounted. ORACLE instance shut down. SQL> startupORACLE instance started. total System Global Area 1.0737E + 10 bytesFixed Size 2114072 bytesVariable Size 1056968168 bytesDatabase Buffers 9646899200 bytesRedo Buffers 31436800 bytesDatabase mounted. database opened. SQL>