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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 #
sql - ORA-12560: TNS:protocol adaptor error - Stack Overflow -2 In my case, (ORA-12560: TNS protocol adapter error)Issue cause of database connection issue like database, user name and password Once you got the issue Initially you have to check connection details, after check the oracle service and further more
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
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-06502: PL SQL: numeric or value error: character string buffer too . . . PL SQL: numeric or value error: character string buffer too small is due to the fact that you declare a string to be of a fixed length (say 20), and at some point in your code you assign it a value whose length exceeds what you declared for example: myString VARCHAR2(20); myString :='abcdefghijklmnopqrstuvwxyz'; --length 26 will fire such an error
ORA-32795: cannot insert into a generated always identity column One of the columns in your target table (leaves_approval) contains an identity column that was defined as Generated always Identity columns can be created in 2 modes - Generated always, that cannot be assigned and Generated by default that can be assigned