Error received when a double sapce exists in front of the equal '=' symbol in tnsnames.ora file and Toad locks the file and doesn't allow other users to access the database:
"ORA-12541: TNS:no listener"
Double space in the tnsnames.ora file.
WORKAROUND:
Avoid double space in the TNSNAMES entry.
STATUS:
Waiting for fix in a future release of Toad for Oracle.
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