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I am writing following statement to create a table in oracle database but failed to create table. An error is generated called
ORA-00904: : invalid identifier
I had written following code to create table in oracle
create table SYSTEM.tUserLogin (Online number(1) null , Role varchar2(15) null )
I am using Oracle 10g express edition.
SYSTEMorSYSschema. You should always create a new schema for user-defined objects. In addition to being much cleaner, various functionality works differently than you might expect in those two schemas– they are designed to contain only objects that Oracle provides.ONLINEis a reserved word in Oracle so you can’t use it as a column name (well, you could if you started using case-sensitive identifiers, but you really don’t want to). You’ll need to specify a different name for your column.