Solution: When the Oracle driver is used to access the Oracle database, the folder of the program cannot be named quot;) quot;. It turns out that the directory of the program contains brackets.
Solution: When the Oracle driver is used to access the Oracle database, the folder of the program cannot be named quot;) quot;. It turns out that the directory of the program contains brackets.
ORA-06413 Connection not open.
Cause: Unable to establish connection.
Action: Use diagnostic procedures to ascertain exact problem
Error Description: it can be connected using the Oracle connection tool, and sqlplus can be connected on the console. It can also be connected using the test connection program developed in Delphi 7.0, but now running the application is the message "ORA-06413: Connection not open error ".
Solution: When the Oracle driver is used to access the Oracle database, the folder of the program cannot be named ")". It turns out that the directory of the program contains parentheses, otherwise, an ORACLE exception "connection not opened" is reported.
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