SQL PLUS Session Environment Oracle PLSQL Tutorial

When SQL*Plus wraps the output to the next line according to the LINESIZE.
If your window is particularly wide, then you can use a wider LINESIZE, avoiding the wrap.

SQL>
SQL> --
SQL>
SQL> show linesize
linesize 300
SQL>
SQL> set linesize 3
SQL>
SQL> select rownum, object_name
  2  from all_objects
  3  where rownum < 20
  4  /
SP2-0253: data item 1 ("ROWNUM") will not fit on line
SQL>
SQL> set linesize 300
SQL>
SQL> select rownum, object_name
  2  from all_objects
  3  where rownum < 20
  4  /
    ROWNUM OBJECT_NAME
---------- ------------------------------
         1 ICOL$
         2 I_USER1
         3 CON$
         4 UNDO$
         5 C_COBJ#
         6 I_OBJ#
         7 PROXY_ROLE_DATA$
         8 I_IND1
         9 I_CDEF2
        10 I_PROXY_ROLE_DATA$_1
        11 FILE$
        12 UET$
        13 I_FILE#_BLOCK#
        14 I_FILE1
        15 I_CON1
        16 I_OBJ3
        17 I_TS#
        18 I_CDEF4
        19 IND$
19 rows selected.