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# 数据库事务实现原理
之前写过《程序员应该知道的数据库知识》,原本是打算把事务实现写在那里的,但是发现篇幅太长,所以需要拿出来单独写成一篇。
## Redo Log
数据库事务有ACID四个核心属性,之前说过,再提一下:
- Atomic,原子性。事务要么不执行,要么完全执行。如果执行到一半,宕机重启,已执行的一半要回滚回去
- Consistency,一致性。这里…
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Program received signal SIGSEGV, Segmentation fault.
[Switching to Thread 1800]
0x090000000033dc34 in _event_sleep () from /QOpenSys/usr/lib/libpthreads.a(shr_xpg5_64.o)
(gdb) bt
#0 0x09000000003…
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Upon creating a connection to ibm i, and expanding the source folder in project explorer, no files are being shown as well as getting the notification `Found non-callable @@iterator`
![image](https…
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I am trying out query-exporter (first time user) on ubuntu 20.04 x64 , with python 3.8.10 in a virtualenv.
I installed query-exporter with pip 21.3.1 (pip install query-exporter).
python ibm_db …
imavo updated
7 months ago
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### Mountpoint for Amazon S3 version
mount-s3 1.0.2
### AWS Region
eu-west-1
### Describe the running environment
EC2 Instance with IBM DB2 10.5 Installed
Mount the S3 endpoint as local FileSy…
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I can no longer see RPG Source in Object Browser. Note: this system is on os vers 7.2
I tried on version 2.0.2 and 2.01.
⚠️ **REMOVE THIS LINE AND ANY SENSITIVE INFORMATION BELOW!** ⚠️
…
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### Package and Environment Details (include every applicable attribute)
* Package Name/Version: **qt/6.2.1**
* Operating System+version: **macOS 11.5.2**
* Compiler+version: **Xcode12, a…
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Hello all,
In the shell commands generated by the compilation actions, I noticed that no matter what I did, they seemed to fail with no output and little to no traceability. As a result, I did ever…
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**Describe the Bug**
While trying to ingest metadata for IBM Db2 using SQLAlchemy Source and dialect ibm-db-sa, following error occurred
`Traceback (most recent call last):
File "/data/vdc/conda/…
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Intelij version: 2023.3.3
Plugin version: 1.10.0
When i run the dependency check, the plugin cannot read the dependency information. The message is "no project dependency information found".
Th…