Questions tagged with RDS Custom for SQL Oracle
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So, have some DMP files that was exported from a oracle on premise, using expdp.
And now from the linux EC2 instance i need import those dumps that is already there if is possible using the impdp but since there is no access to directory in the RDS instance how to do that?
On linux i hace oracle installed and i can connect by sqlplus in the target db.
Suppose a MySQL RDS instance was created with engine version 5.7.33 and a backup of it was taken today, with plans to retain the backup for seven years. After seven years, if AWS no longer supports version 5.7.33 and the user wants to restore the snapshot, can they do so? Additionally, will the data be recoverable even if the database engine version is no longer supported? Furthermore, if restoring from the snapshot is not possible, what are some alternative methods for storing backups of an RDS instance for long-term retention?
The heading pretty much describes it all, here are some more information on the Amazon RDS I am using.
* Engine: MySQL Community 8.0.28
* Class db.r6g.large
* Multi-AZ no.
The data volume is very small, not even a few megs, as I am just doing some PoC to test the connectivity.
On the client side, I am using the following stack
* Ubuntu 22.04
* Python 3.10
* SQL Alchemy 1.4.44
```python3
#!/usr/bin/env python3
# encoding:utf-8
uri:str = 'mysql+mysqlconnector://della:random_password@tensorflow-dump.apj-xjge.ap-southeast-1.rds.amazonaws.com:3306/convnet'
with create_engine(url=uri).connect() as out_client:
logging.info(msg=f'Connected to {uri}.')
results.to_sql(name='machine_name', con=out_client,
if_exists='append', index=False)
logging.info(msg=f'Pushed data.')
```
So, I am encountering the operational error on a sporadic basis, once every 3-4 attempts of running the above code. It is not reproducible, but certainly this makes the database unsuitable for production usage. Here is the stacktrace.
```
Traceback (most recent call last):
File "/home/della/supply-chain-dev/clustering_results_postprocess/src/push.py", line 119, in <module>
asyncio.run(main=main())
File "/usr/lib/python3.10/asyncio/runners.py", line 44, in run
return loop.run_until_complete(main)
File "/usr/lib/python3.10/asyncio/base_events.py", line 646, in run_until_complete
return future.result()
File "/home/della/supply-chain-dev/clustering_results_postprocess/src/push.py", line 111, in main
with create_engine(url=out_dbase_uri).connect() as out_client:
File "/home/della/.local/lib/python3.10/site-packages/sqlalchemy/engine/base.py", line 3315, in connect
return self._connection_cls(self, close_with_result=close_with_result)
File "/home/della/.local/lib/python3.10/site-packages/sqlalchemy/engine/base.py", line 96, in __init__
else engine.raw_connection()
File "/home/della/.local/lib/python3.10/site-packages/sqlalchemy/engine/base.py", line 3394, in raw_connection
return self._wrap_pool_connect(self.pool.connect, _connection)
File "/home/della/.local/lib/python3.10/site-packages/sqlalchemy/engine/base.py", line 3364, in _wrap_pool_connect
Connection._handle_dbapi_exception_noconnection(
File "/home/della/.local/lib/python3.10/site-packages/sqlalchemy/engine/base.py", line 2198, in _handle_dbapi_exception_noconnection
util.raise_(
File "/home/della/.local/lib/python3.10/site-packages/sqlalchemy/util/compat.py", line 210, in raise_
raise exception
File "/home/della/.local/lib/python3.10/site-packages/sqlalchemy/engine/base.py", line 3361, in _wrap_pool_connect
return fn()
File "/home/della/.local/lib/python3.10/site-packages/sqlalchemy/pool/base.py", line 325, in connect
return _ConnectionFairy._checkout(self)
File "/home/della/.local/lib/python3.10/site-packages/sqlalchemy/pool/base.py", line 888, in _checkout
fairy = _ConnectionRecord.checkout(pool)
File "/home/della/.local/lib/python3.10/site-packages/sqlalchemy/pool/base.py", line 491, in checkout
rec = pool._do_get()
File "/home/della/.local/lib/python3.10/site-packages/sqlalchemy/pool/impl.py", line 145, in _do_get
with util.safe_reraise():
File "/home/della/.local/lib/python3.10/site-packages/sqlalchemy/util/langhelpers.py", line 70, in __exit__
compat.raise_(
File "/home/della/.local/lib/python3.10/site-packages/sqlalchemy/util/compat.py", line 210, in raise_
raise exception
File "/home/della/.local/lib/python3.10/site-packages/sqlalchemy/pool/impl.py", line 143, in _do_get
return self._create_connection()
File "/home/della/.local/lib/python3.10/site-packages/sqlalchemy/pool/base.py", line 271, in _create_connection
return _ConnectionRecord(self)
File "/home/della/.local/lib/python3.10/site-packages/sqlalchemy/pool/base.py", line 386, in __init__
self.__connect()
File "/home/della/.local/lib/python3.10/site-packages/sqlalchemy/pool/base.py", line 684, in __connect
with util.safe_reraise():
File "/home/della/.local/lib/python3.10/site-packages/sqlalchemy/util/langhelpers.py", line 70, in __exit__
compat.raise_(
File "/home/della/.local/lib/python3.10/site-packages/sqlalchemy/util/compat.py", line 210, in raise_
raise exception
File "/home/della/.local/lib/python3.10/site-packages/sqlalchemy/pool/base.py", line 680, in __connect
self.dbapi_connection = connection = pool._invoke_creator(self)
File "/home/della/.local/lib/python3.10/site-packages/sqlalchemy/engine/create.py", line 578, in connect
return dialect.connect(*cargs, **cparams)
File "/home/della/.local/lib/python3.10/site-packages/sqlalchemy/engine/default.py", line 598, in connect
return self.dbapi.connect(*cargs, **cparams)
File "/home/della/.local/lib/python3.10/site-packages/mysql/connector/pooling.py", line 293, in connect
return CMySQLConnection(*args, **kwargs)
File "/home/della/.local/lib/python3.10/site-packages/mysql/connector/connection_cext.py", line 118, in __init__
self.connect(**kwargs)
File "/home/della/.local/lib/python3.10/site-packages/mysql/connector/abstracts.py", line 1178, in connect
self._open_connection()
File "/home/della/.local/lib/python3.10/site-packages/mysql/connector/connection_cext.py", line 293, in _open_connection
raise get_mysql_exception(
sqlalchemy.exc.OperationalError: (mysql.connector.errors.OperationalError) 2013 (HY000): Lost connection to MySQL server at 'reading authorization packet', system error: 104
(Background on this error at: https://sqlalche.me/e/14/e3q8)
```
I have already opened the necessary port in the security group to allow access from my client machine. So is this a resource issue or code/credential issue? Do I need to fire up a bigger database somehow, or resort to multi-zone deployment etc.?
Additional info:
Said it in the comment already, but to make it clear, my client is a Dell Inspiron Laptop running Linux Mint, the security group (of the RDS instance) is configured to accept connection, and from the same laptop, I can connect to the ```mysql>``` prompt without any problem. It is the sqlalchemy client that is refusing to connect _sometimes_.
¡Hi!, I created a RDS ORACLE MULTITENANT ver. 19, but i have a question... AWS multitenant provide by default a PDB (ORCL) if you dont specify any when i try to create another one PDB I Couldn't, cause i only have access to the PDB by default created, how i can create another PDB'S or use the CDB commands. or perhaps another way to create a multi-tenant ambient whit oracle.
asked a month ago
I would like to reduce costs by allowing RDS Custom to use an existing trail rather than create a new one. Is this possible?
asked a month ago