Enter a valid column name What are the possibilities of this error 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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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. I was trying to connect to the database here in my laptop using oracle toad but i kept on having this error Tns:connect timeout occurred what are the possible reasons why i kept on ha. Resource busy and acquire with nowait specified or timeout expired asked 14 years, 8 months ago modified 1 year, 3 months ago viewed 1.5m times
Value too large for column asked 14 years, 10 months ago modified 2 years, 9 months ago viewed 154k times Character string buffer too small asked 12 years, 1 month ago modified 5 years, 3 months ago viewed 742k times No data found exception for the following query
