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- sql - ORA-00904: invalid identifier - Stack Overflow
I was doing an Oracle database link exercise mixed with join queries and this was exactly my problem I was getting ORA-00904: "A" "NOMBRE": invalid identifier errors and such, and the problem was solved adding double quotes in the column names where the errors popped –
- 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 Normally, Oracle tables and columns are not case sensitive and cannot contain punctuation marks and spaces
- sql - ORA-12560: TNS:protocol adaptor error - Stack Overflow
After searching alot got a simple way to solve it Just follow the steps Check status of your listener open command prompt and type lsnrctl status
- Oracle client ORA-12541: TNS:no listener - Stack Overflow
ORA-12541: TNS:no listener Cause: The connection request could not be completed because the listener is not running Action: Ensure that the supplied destination address matches one of the addresses used by the listener - compare the TNSNAMES ORA entry with the appropriate LISTENER ORA file (or TNSNAV ORA if the connection is to go by way of an
- SQL Error: ORA-00942 table or view does not exist
The result will be "ORA-00942: table or view does not exist" even though user2 does have insert and select privileges on user1 customer table and is correctly prefixing the table with the schema owner name To avoid the problem, you must grant select privilege on the sequence:
- ORA-29273: HTTP request failed intermittent error using the utl_http . . .
I'm using the utl_http package to make HTTP GET requests to an IIS site on the same server (local) as Oracle Sometimes it works and I get the response, but more often than not it hangs for about 1
- stored procedures - Oracle Error ORA-06512 - Stack Overflow
ORA-06510: PL SQL: unhandled user-defined exception If so, all you need to do is add an exception block
- 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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