我正在使用Oracle12c标准版12.2.0.1.0。一切都很完美。但是,当我检查警报日志文件时,我看到了以下几次消息。
错误消息
An internal routine has requested a dump of selected redo.
This usually happens following a specific internal error, when
analysis of the redo logs will help Oracle Support with the
diagnosis.
It is recommended that you retain all th
我在同一磁盘上有5个重做日志文件,如下所示:
/disk1/oradata/redo01.log
/disk1/oradata/redo02.log
/disk1/oradata/redo03.log
/disk1/oradata/redo04.log
/disk1/oradata/redo05.log
但建议在另一个磁盘上进行多路复用。在这种情况下,我想在SQL中设置以下过程:
alter database add logfile member /disk2/oradata/redo01_b.log
alter database add logfile member /disk2/
我无法从备份中恢复数据文件和重做日志文件。我在RMAN中写道,
run{
set newname for datafile 1 to '/u02/data_redo/system01.dbf';
set newname for datafile 2 to '/u02/data_redo/sysaux01.dbf';
set newname for datafile 3 to '/u02/data_redo/undotbs01.dbf';
set newname for datafile 4 to '/u02/data_redo/users
我正面临着这个不寻常的问题。我想从no归档模式启用归档日志模式,并对ALTER SYSTEM SET log_archive_dest='LOCATION=D:\Oracle\Redo Log Archive\'一样使用alter命令,然后关闭数据库。当我试图在SQL>STARTUP挂载时重新启动时,它给出了下面的错误ORA-16024: parameter LOG_ARCHIVE_DEST_1 cannot be parsed。在搜索完网络之后,我尝试了sql>ALTER SYSTEM SET log_archive_dest_1='LOCATION=D:
在GoDaddy MySQL数据库上,我收到以下错误:
error: code: "ER_TOO_BIG_ROWSIZE"errno: 1118index: 0sql: "UPDATE `cloudmeetin`
SET `userId` = 'abhi',
`fullName"sqlMessage:
"The size of BLOB/TEXT data inserted in one transaction is greater than 10% of
redo log size. Increase the redo lo
ORA-00313: open failed for members of log group 2 of thread 1
ORA-00312: online log 2 thread 1: '/u02/oraredo/O12C/redo02b.rdo'
0RA-00312: online log 2 thread 1: '/u02/oraredo/O12C/redo02A.rdo'
在我的跟踪文件/警报日志中出现了这个错误,这是因为我的重做日志组2(status=current)中的所有重做日志文件都损坏了。
我可以做下面的工作来解决这个问题吗?
1.更改系统
我在docker下安装了php:8.0.9-apache并在安装后检查日志,我在mysql部件中看到了一些警告:
2021-10-15 14:48:59+03:00 [Note] [Entrypoint]: Entrypoint script for MySQL Server 5.7.35-1debian10 started.
2021-10-15 14:49:00+03:00 [Note] [Entrypoint]: Switching to dedicated user 'mysql'
2021-10-15 14:49:00+03:00 [Note] [Entrypoint
我无法在MAMP中启动MySQL。这是日志中的错误。
[ERROR] Can't open the mysql.plugin table. Please run mysql_upgrade to create it.
但是,如果我运行mysql_upgrade,我会得到
mysql_upgrade: command not found
谁能告诉我问题出在哪里?
假设我编写了一个像"INSERT INTO my_table (a,b) VALUES (1,2)"这样的查询。
从客户端传递查询到将查询保存到磁盘上,MySQL内部发生了什么。
像这样:
-> What all innodb objects(filesystem buffers/logs) affected?
-> What're the step the data has to pass through till it reaches on table space?
换句话说,db的剖析写道。
例如:
-> query being parsed
以下是Oracle概念的摘录。也许这是个愚蠢的问题,但我真的需要你的帮助来理解它。
我的问题是:
线程在上下文线程检查点中的含义是什么?
它是否意味着重做日志线程(属于特定实例的所有重做日志文件)?
某一目标意味着什么?
谢谢大家!英语不是我的母语,我觉得很难完全理解这一点。
When Oracle Database Initiates Checkpoints
The checkpoint process (CKPT) is responsible for writing checkpoints to the data file
headers and control file. Ch