46
votes
MySQL relay log corrupted, how do I fix it? Tried but failed
Error: Last_SQL_Errno: 1594
Last_SQL_Error: Relay log read failure: Could not parse relay log event entry.
This error message means that the copy of the MySQL replication log could not be read on ...
- 561
30
votes
Accepted
Postgresql doesn't accept replication connection
The database name has to be replication as all does not cover replication connections.
host replication postgres 127.0.0.1/0 trust
The PostgreSQL documentation ...
- 749
23
votes
Accepted
How to backup large MongoDB database
With the need of 10TB to be backed up this gets a bit complicated.
Replicas are no replacement for proper backups
While delayed replica set members can provide an relatively easy way to help you ...
- 3,148
22
votes
Accepted
Replication Monitor Information using T-SQL
After doing some online search,I found what you needed,hope my answer helps you.
Answer 1
Note:
It Only works with transactional and transactional peer to peer
replication
T-SQL script which ...
- 1,447
21
votes
Accepted
How do I query the running pg_hba configuration?
Version 10 and above
There is a very convenient view for this called pg_hba_file_rules.
table pg_hba_file_rules ;
line_number │ type │ database │ user_name │ address │ ...
- 28.9k
16
votes
Accepted
MySQL Replication: Seconds Behind Master super high
When you see the Seconds_Behind_Master that high, I look at the following:
Relay_Log_Space: 8179978166
You have 7.6182GB of relay logs to process.
Master_Log_File: mysql-bin.000173
...
- 174k
16
votes
Using Postgresql logical replication, how do you know that the subscriber is caught up?
I used replication on Postgres 10 last year and I had the same problem understanding how to monitor the process, as documentation is not clear enough. Anyway, I'll try to give you an example to check ...
- 476
15
votes
MySql - Changing expire_logs_days without restarting the server
In MySQL 5.6, you would want to show what your expire_logs_days is set to first. Then confirm that the master doesnt need to keep these logs more than x amount of days. Word of caution, having binary ...
- 250
14
votes
Mongo DB Replica set Stuck at RECOVERING state
The easy, albeit a bit unsecure way
Stop the first secondary
Delete the content of it's dbpath
Restart the secondary
Wait for it to catch up with the primary
Repeat process with the second secondary
...
- 3,148
14
votes
Accepted
Database: One table or many
You should definitely (in my opinion) not have 142 tables - it'll be a complete mess to name, index and maintain, and you'll generate yourself a lot of extra work if you some day add another category, ...
- 8,849
14
votes
Mongo ReplicaSet - arbiter in connection string
Connecting to a replica set
Most drivers will show the following behavior, as far as I know
If only a single node is given, the driver will simply connect to this node.
If the replicaSet option is ...
- 3,148
13
votes
Accepted
How to change a MySQL previous slave to be a master and remove slave status information?
In MySQL 5.5.16 and later, you can use RESET SLAVE ALL to do all that RESET SLAVE does and reset the connection parameters from the memory, this way it doesn't require a mysqld restart.
- 246
13
votes
Is it safe to delete mysql-bin files?
Try this:
RESET MASTER;
as the document said:
RESET MASTER enables you to delete any binary log files and their related binary log index file, returning the master to its state before binary ...
- 241
13
votes
MySQL relay log corrupted, how do I fix it? Tried but failed
[Fixing MySQL replication after slaves' relay log was corrupted]
MySQL replication on slave (version 5.XX) has stopped. Slave_IO_Running was marked as Yes, but Slave_SQL_Running as No. Simple stop/...
- 131
12
votes
Mysql replication is enabled but stuck at "waiting for binlog to be updated"
MySQL Replication is running just fine. How do I know ?
Slave_IO_Running: Yes
Slave_SQL_Running: Yes
This indicates that the two replication threads are alive.
To verify this, run the following on ...
- 174k
12
votes
Accepted
How to fix a messed up replication on MS SQL Server
TLDR:
It appears that disabling and re-enabling replication probably fixed the issue:
exec sp_replicationdboption @dbname = N'DatabaseName', @optname = N'publish', @value = N'false'
exec ...
- 371
12
votes
Accepted
What is a "hashed transaction" in SQL Server Replication terminology?
In reality, this DMV (Dynamic Management View) won't be very helpful for a DBA or Developer and is geared to SQL server Product Support and Product Group. You can ignore this DMV.
Hash tables work ...
11
votes
Add article to transactional publication without generating new snapshot
Add new articles in your Publication property window (uncheck the Show only checked articles in the list)
right click the same Publication node and go to "View Snapshot Agent
Status"
click start and ...
- 505
11
votes
Move live SQL Server database to a new server
since you are using SQL Server 2008 Web edition, your best bet is to use LOG SHIPPING.
Your database size is 100GB, so initializing the secondary from a backup should be considered. Dont use GUI to ...
- 61.2k
11
votes
Accepted
Show sql statements from mysql binlog (GTID)
It seems that the option --verbose must be added:
mysqlbinlog --base64-output=AUTO --verbose mysql-bin.000005
In the result you see:
### UPDATE `customer`
### WHERE
### @1=388442
### @2=...
- 378
11
votes
Error 1236 - "Could not find first log file name in binary log index file"
If all else fails, you may find that you need to reset the slave and restart replication. From https://www.redips.net/mysql/replication-slave-relay-log-corrupted/ :
# First note current settings (note ...
- 211
11
votes
Accepted
Postgresql: invalid record length at 29/E4624520 but replication looks fine
I cannot do anything else than quoting an entry from the pgsql-admin mailing list:
Just after startup, the standby tries to read and replay the WAL files
which exist in the standby, and then if ...
- 28.9k
10
votes
Some MySQL slave errors?
It's better not to skip by hundreds. Just loop one-by-one:
until mysql -e "show slave status\G;" | grep -i "Slave_SQL_Running: Yes";do
mysql -e "stop slave; SET GLOBAL SQL_SLAVE_SKIP_COUNTER = 1; ...
- 201
10
votes
mysql replication on windows server
Replication setup on a windows server is equivalent to doing it in other systems: The official manual provides you a detailed guide. In short:
Configure on both servers a different server-id, and ...
- 14k
10
votes
Replication Lag on Postgres AWS RDS Service
I had the same issue with our staging RDS. After quite a while I found a blog post that says:
In a very busy database, with many writes per second, this number will remain fairly accurate. However, ...
- 201
10
votes
Accepted
InnoDB: Error: Table “mysql”.“innodb_table_stats” not found
The problem is actually very simple. Here is what happened
When you installed MySQL, the 5 InnoDB systems tables exist in two places
inside /var/lib/mysql/mysql as 5 .frm and 5 .ibd files
inside the ...
- 174k
10
votes
Accepted
How do I configure AWS Aurora to separate write/read operations
AFAIK, you're right that AWS RDS Aurora (a MySQL 5.6 fork) does not support automatic or transparent read/write splitting:
http://docs.aws.amazon.com/AmazonRDS/latest/UserGuide/CHAP_Aurora.html
In ...
- 1,231
10
votes
Accepted
ssms - how to format T-SQL scripts?
SSMS doesn't have any built-in formatting functions, but there are several 3rd party tools and web sites that can help, many of them free, and all of them surely better than using Word:
http://www....
- 176k
10
votes
Accepted
Can the account name of 'distributor_admin' be changed?
No it can't be renamed. The good news is that the account only exists on the distributor, which doesn't really contain any user data.
You can safely disable the account when you aren't setting up ...
- 26.9k
10
votes
Accepted
Postgresql 10 create subscription hangs
From the docs:
Creating a subscription that connects to the same database cluster
(for example, to replicate between databases in the same cluster or to
replicate within the same database) will ...
- 32.1k
Only top scored, non community-wiki answers of a minimum length are eligible