ORA-24395: cannot reinitialize non-existent pool
Cause: OCIConnectionPoolCreate was not called in OCI_DEFAULT mode for this pool handle.
Action: Create a connection pool prior to reinitializing it.
ORA-24395表示不能对不存在的池进行重新初始化，官方解释是试图在一个不存在的池上执行ALTER SYSTEM SET SHARED_POOL_SIZE，ALTER SESSION SET SHARED_POOL_SIZE，ALTER SYSTEM RELEASE SHARED_POOL，ALTER SYSTEM FLUSH SHARED_POOL，或ALTER SYSTEM REINITIALIZE SHARED_POOL语句时，可能引发ORA-24395错误。 这个错误的最常见原因是在共享内存池尚未初始化的情况下，认为它已经存在而尝试更改共享内存池大小。要正常处理这一问题，首先必须对共享内存池进行初始化，如下所示：
ALTER SYSTEM SET SHARED_POOL_SIZE=*;
ALTER SYSTEM FLUSH SHARED_POOL;
ALTER SYSTEM REINIALIZE SHARED_POOL;