Im using oracle 10g to create table but it is showing “ORA-00922: missing or invalid option” and in the query

Question

I'm using oracle 10g to create table but it is showing "ORA-00922: missing or invalid option" and in the query at bottom sequence line for .nextval it is showing red mark line, from long time searching for it.

CREATE TABLE  "TICKET_TABLE" (  
"TKT_NUMBER" NUMBER NOT NULL ENABLE,    
"TKT_STATUS" VARCHAR2(10),
"TKT_CLIENT" VARCHAR2(10),
"TKT_ASSIGN" VARCHAR2(15),
"TKT_PROJ" VARCHAR2(15),    
"TKT_SUB" VARCHAR2(100),    
"TKT_BODY" VARCHAR2(200),   
"USER_NAME" VARCHAR2(15) NOT NULL ENABLE,    
CONSTRAINT "TICKET_TABLE_PK" PRIMARY KEY ("TKT_NUMBER") ENABLE) /  
CREATE OR REPLACE TRIGGER  "BI_TICKET_TABLE"   
before insert on "TICKET_TABLE" for each row   
begin 
   select "TICKET_SEQ".nextval into :NEW.TKT_NUMBER from dual;  
end;   
/ ALTER TRIGGER  "BI_TICKET_TABLE" ENABLE /

Answer 1

使用不带双引号的序列名称

 select TICKET_SEQ.nextval 

Answer 2

You might have forgot to . 。
Try queries in the below format,

CREATE TABLE "TICKET_TABLE" ( "TKT_NUMBER" NUMBER NOT NULL ENABLE, "TKT_STATUS" VARCHAR2(10), "TKT_CLIENT" VARCHAR2(10), "TKT_ASSIGN" VARCHAR2(15), "TKT_PROJ" VARCHAR2(15), "TKT_SUB" VARCHAR2(100), "TKT_BODY" VARCHAR2(200), "USER_NAME" VARCHAR2(15) NOT NULL ENABLE, CONSTRAINT "TICKET_TABLE_PK" PRIMARY KEY ("TKT_NUMBER") ENABLE );

SET define OFF;
CREATE OR REPLACE TRIGGER "BI_TICKET_TABLE" before INSERT ON "TICKET_TABLE" FOR EACH row BEGIN SELECT TICKET_SEQ.nextval INTO :NEW.TKT_NUMBER FROM dual; END;

ALTER TRIGGER "BI_TICKET_TABLE" ENABLE;