OS = > SOLARIS
DB = > 815

SQL> ALTER TABLE trans_due
2 ADD( tel_sec CHAR(1),
3 avail_dt DATE DEFAULT TRUNC(SYSDATE) CONSTRAINT nnavl NOT NULL,
4 rev_dt DATE DEFAULT TRUNC(SYSDATE) + 1 CONSTRAINT nnrev NOT NULL,
5 last_dt DATE DEFAULT TRUNC(SYSDATE) + 2 CONSTRAINT NNlast NOT NULL);
ALTER TABLE *
ERROR at line 1:
ORA-00600: internal error code, arguments: [17058], [2199000856], [], [], [], []
, [], []

can anyone tell me y. in my alert log it says that it encountered a deadlock....