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- Why do I have ORA-00904 even when the column is present?
ORA-00904-invalid identifier errors are frequently caused by case-sensitivity issues Normally, Oracle tables and columns are not case sensitive and cannot contain punctuation marks and spaces But if you use double quotes to create a quoted identifier, that identifier must always be referenced with double quotes and with the correct case For example: create table bad_design
- sql - ORA-00904: invalid identifier - Stack Overflow
More informations about your ERROR ORA-00904: string: invalid identifier Cause: The column name entered is either missing or invalid Action: Enter a valid column name A valid column name must begin with a letter, be less than or equal to 30 characters, and consist of only alphanumeric characters and the special characters $, _, and #
- ORA-01017 Invalid Username Password when connecting to 11g database . . .
ORA-01017 Invalid Username Password when connecting to 11g database from 9i client Asked 12 years, 5 months ago Modified 4 months ago Viewed 970k times
- ORA-12170: TNS:Connect timeout occurred - Stack Overflow
I was trying to connect to the database here in my laptop using Oracle Toad but I kept on having this error: ORA-12170: TNS:Connect timeout occurred What are the possible reasons why I kept on ha
- ORA-01403: no data found for Select into - Stack Overflow
I am getting ORA-01403: no data found exception for the following query What are the possibilities of this error? SELECT trim (name) INTO fullname FROM ( SELECT n name FROM directory
- Oracle client ORA-12541: TNS:no listener - Stack Overflow
On my Database server (server1) listener and database instance run correctly and I can use sqlplus to connect to this DB When I connect to database by using other server, I check the TNS configuration and it is correct but system says: ERROR: ORA-12541: TNS:no listener My database is Oracle 10gR2 So how can I solve this issue?
- ORA-03113: end-of-file on communication channel after long inactivity . . .
19 ORA-03113: end-of-file on communication channel Is the database letting you know that the network connection is no more This could be because: A network issue - faulty connection, or firewall issue The server process on the database that is servicing you died unexpectedly For 1) (firewall) search tahiti oracle com for SQLNET EXPIRE_TIME
- ORA-01452: cannot CREATE UNIQUE INDEX; duplicate keys found
If you had two identical values in the table - abcd twice, say, with the same case - then your ALTER TABLE would throw ORA-02299 despite the NOVALIDATE, as it won't be able to create the unique index to back that up In 11g you could create a virtual column and constrain that, but you have the same problem creating the unique index
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