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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 #
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-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
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ORA-20999: Parsing returned query results in "ORA-20999: Failed to parse SQL query! <p>ORA-06550: line 3, column 25: ORA-00936: missing expression< p>" If I try without any bind variables it compiles fine:
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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
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- 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?
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