Performing failover NOW, please wait... Error: ORA-16585: operation cannot be performed on a primary database
时间: 2024-04-06 10:33:24 浏览: 13
ORA-16585 错误表示无法在主数据库上执行故障转移操作。这通常是因为你正在尝试在主数据库上执行一个只能在备用数据库上执行的操作。在进行故障转移之前,你需要首先将主数据库转变为备用数据库,然后才能执行故障转移操作。你可以使用 Data Guard 等工具来实现主备切换。在进行任何操作之前,请务必参考相关的文档和手册,并在可能的情况下寻求专业帮助。
相关问题
java.lang.IllegalStateException: attempt to re-open an already-closed object: SQLiteDatabase:
This error occurs when you try to access a closed SQLiteDatabase object. This can happen when you try to perform a database operation on a SQLiteDatabase object which has already been closed.
To resolve this error, you need to ensure that you are not trying to access a closed SQLiteDatabase object. You can do this by checking the state of the SQLiteDatabase object before performing any operation on it.
Here is an example of how you can avoid this error:
1. Open the SQLiteDatabase object:
```
SQLiteDatabase db = dbHelper.getWritableDatabase();
```
2. Check the state of the SQLiteDatabase object:
```
if (db.isOpen()) {
// Perform database operations here
} else {
// Handle the case where the SQLiteDatabase object is closed
}
```
3. Close the SQLiteDatabase object when you are done with it:
```
db.close();
```
By following these steps, you can avoid the IllegalStateException: attempt to re-open an already-closed object: SQLiteDatabase error.
importerror: libatlas.so.3: cannot open shared object file: no such file or
library
This error typically occurs when the required shared library "libatlas.so.3" is missing or cannot be found. To resolve this issue, you can try the following steps:
1. Check if the library is installed: Run the following command to check if the library is installed on your system:
```
ls /usr/lib/libatlas.so.3
```
If the library is not found, you can install it using your package manager. For example, on Ubuntu, you can use the following command:
```
sudo apt-get install libatlas-base-dev
```
2. Update the library cache: After installing the library, run the following command to update the library cache:
```
sudo ldconfig
```
This will update the system's cache of shared libraries and make them available to your application.
3. Check your LD_LIBRARY_PATH: Ensure that the directory containing the library is included in your LD_LIBRARY_PATH environment variable. You can check the current value of LD_LIBRARY_PATH using the following command:
```
echo $LD_LIBRARY_PATH
```
If the directory containing the library is not listed, you can add it to the LD_LIBRARY_PATH variable. For example, if the library is located in "/usr/lib", you can add the following line to your shell configuration file (e.g., ~/.bashrc or ~/.bash_profile):
```
export LD_LIBRARY_PATH=$LD_LIBRARY_PATH:/usr/lib
```
After performing these steps, try running your program again. The error should no longer occur if the library is correctly installed and accessible.