title: Getting Error while altering primary key constraint?
body: <p>I am new to SQl.Requesting for your assistance.</p>
  
  <p>i have created a table called "emp"(as same as default emp in oracle) with 14 rows and 8 columns with out mentioning the Constraints.</p>
  
  <p>Now i need to alter the same for some purpose,However it throwing an error saying " Invalid Alter table option"</p>
  
  <p>please find the syntax used in oracle 10.2</p>
  
  <pre><code>SQL&gt; alter table dept
    2  add constrtaint pk_dept primary key (DEPTNO);
  add constrtaint pk_dept primary key (DEPTNO)
                                   *
  </code></pre>
  
  <p>ERROR at line 2:
  ORA-01735: invalid ALTER TABLE option</p>