Error message:
（没有登录）-PL/SQL Developer
Initialization error 无法锁定OCI dll
OracleHomeKey：
OracleHomeDir：E\instantclient_plsql_11_2
Cross out the pop-up error box directly and you will enter the main interface of the PLSQL tool. We need to make some configurations.
Solution:
Note that when solving the above problem, you need to ensure that the PLSQL light desktop compressed package has been decompressed and the system environment variables have been configured normally. Please see the following article for the specific configuration method.
In the menu bar of the PLSQL tool, select Tools -> Preferences, manually configure the path in the Oracle home directory and OCI library (automatically detected as empty) items, point to the location of oci.dll in the directory, and the problem will be solved.
After the configuration is completed, restart the PLSQL client and log in again (the above path is modified according to your own PLSQL tool installation location and the light desktop tool package decompression path).
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