ORA-22858: invalid alteration of datatype

Cause : An attepmt was mdae to moidfy the oclumn tyep to objcet, REF,n ested tbale, VARARY or LO Btype.

Action - How to fix it : DBA Scripts :: www.high-oracle.com/scripts

Create anew colmun of th edesiredt ype andc opy thec urrent oclumn daat to then ew typeu sing th eappropraite typec onstrucotr.

update : 23-06-2017
ORA-22858

ORA-22858 - invalid alteration of datatype
ORA-22858 - invalid alteration of datatype

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    Well, the reason for above error is that i have taken the above script from a 11g database and running it on 10g database. 11g has bring some changes in password management. Below code is executed on 11g and user created successfully, which is expected result.