Reconstructing a database.

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2
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1answer
871 views

Table corruption: How to perform Innodb Checksum checks in MySQL 5.5 for Windows?

Having a corrupted Mysql 5.5.31 (Windows) database, my question relates to the the top solution provided in How do you identify InnoDB table corruption? , more precisely to the following script that ...
0
votes
1answer
903 views

Is it there anyway to restore updated records in Microsoft SQL Server 2008 R2?

We have an test database configured with our web application. Due to internal web application error the entries were get updated in the database. Is it there any way to recover the updated records? ...
0
votes
0answers
1k views

MySQL installation broken after Windows crash - how to repair MySQL and recover data?

recently my PC powered off abruptly for no apparent reason, leaving my Windows 7 installation severly damaged. I can still log onto the machine, but tons of Windows system files have been corrupted ...
0
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1answer
194 views

OK to put temp tablespace on volatile storage or to omit it from backups? (Postgresql)

I would intuit that it's fine, but I just want to make sure there are no gotchas from a recovery point of view: If I were to lose my temp tablespace upon system crash, would this prevent proper crash ...
1
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1answer
248 views

Master updates Slave but not Master itself

I have a setup master/slave in which applications are pointed only to master. Yesterday Master had got crashed due to "multi bit error on dimm detected" in Front indication panel in orange color. ...
-1
votes
1answer
255 views

Should I keep pg_xlog on the same disk as data if using disk snapshotting?

We're running on EBS volumes on EC2. We're interested in leveraging EBS snapshotting for backups. However, does this mean we'd need to ensure our pg_xlog is on the same EBS volume as our data? (I ...
1
vote
1answer
396 views

Why we need auxiliary instance in TSPITR

Need help! I've read Database Backup and Recovery User's Guide 11g but I can't uderstand why we need auxiliary instance to perform tspitr. We can do complete recovery of tablespace within same ...
2
votes
1answer
5k views

How to recover data from corrupted innoDB table from a crashed mySQL server?

Some background: I had a MySQL server running on Ubuntu Server. I don't remember which versions they were running but it was likely a Ubuntu 12.04 with MySQL 5.5. During the course of a day, ...
1
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1answer
64 views

POSTGRES DB Server Blunder

This weekend I had to rebuild my laptop which had Postgres running. For some reason, I forgot to dump the data but I did make a complete copy of the original hard drive. Is it possible to recover ...
0
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0answers
120 views

Tape rotation strategies

I am trying to find a tape rotation strategy that would be optimal under the following conditions: Backup Media Rotation strategy should support the following: Media Archives required ...
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0answers
59 views

Will Startup Procs Run Again After Database Recovery?

We have a number of stored procedures that run on startup via the sp_procoption startup: exec sp_procoption 'ProcName', 'startup, 'true' A customer's server started up with a very large database in ...
0
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0answers
332 views

How to do point in time recovery of binary log files into .sql file

I have written a shell script to do an incremental backup of MySQL database. For point in time recovery I'm using the binary logs generated in /var/lib/mysql directory. For point-in-time recovery, Im ...
1
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1answer
970 views

MySQL InnoDB logfiles resized - review mysql-err.log for potential problems

I restarted mysqld this morning, to increase the size of the innodb logs and increase the amount of memory allocated to the innodb buffer pool. (MySQL 5.1.53-Community on Ubuntu) To increase the ...
7
votes
2answers
1k views

SQL Server - contents of transaction log file in more detail

I have a question regarding transaction log (let’s just call it LDF for short) contents. I am assuming a database with full recovery model. I have read that LDF file contains (logs) each and every ...
5
votes
2answers
293 views

SQL Server 2008 R2 database is suspect, tried it all. Final destination?

This night my hosting provider made a "hard reset" on my VPS hosted in their farm. And one of most important databases (SQL Server 2008R2 database) is now in Suspect mode. My provider has backups ...
1
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3answers
182 views

Where can I learn about MySQL master/slave, master/master, or clustering setups?

What are the best resources you've read or watched about setting up master/slave or clustering for database replication? I don't know much about this. I have a database that is getting rather large ...
2
votes
1answer
775 views

How to Recover My Oracle 9i Database From Just The Datafiles

The state of the system when I started was that there was a single, working instance of Oracle Database 9i. I proceeded to install Oracle 11g choosing to Install Software Only. Upon completion, ...
5
votes
1answer
163 views

Rebuild a table from history records

A small disaster happened to me on my PostgreSQL 8.4 database. I follow visitors to my webpage in two tables: History +---------------+-------------+ | whereseenlast | varchar(50) | | uniqid ...
2
votes
1answer
613 views

Which backup files are needed for a successful restore?

Considering the built-in 'Backup Database' script (backup.bat) that comes with a new installation of the Oracle Express 11g Edition, after finishing the script execution, what folders/files should be ...
3
votes
4answers
239 views

Does it make sense to use full recovery if the data and log files are on the same HD?

We have a database that was set up to use full recovery and my guess is that the reasoning was only to prevent data loss if a failure happened between full backups. We make daily full backups of the ...
3
votes
0answers
306 views

“InnoDB: error clustered record for sec rec not found” MySQL 5.5.28

We have a high-end server, 128GB RAM, 32 Core , Xeon, SSD RAID 10 - running Ubuntu 12.04 with MySQL 5.5.28. During high load, randomly we got the below error. MySQLcheck, innochecksum shows no ...
3
votes
1answer
1k views

MySQL 5.5 : (InnoDB) - Manually edited an .ibd file to test recovery, now entire MySQL installation is broken!

So I wanted to test MySQL recovery from Innodb corruption. file-per-table is enabled. I have a few test db's on the MySQL instance. I shutdown mysql. Manually edited/added random characters to an ...
4
votes
1answer
3k views

Innodb, MySQL 5.5.28 - Segmentation Signal 11 faults, on high load. .. my.cnf file included

We have a high-end server, 128GB RAM, 32 Core , Xeon, SSD RAID 10 - running Ubuntu 12.04 with MySQL 5.5.28 . Doing random imports to large InnoDB tables, over 50+ gigs, randomly after a few hours of ...
4
votes
1answer
926 views

Retrieving data if control file is lost in oracle Database

Suppose if the databases control file is lost permanently (no backup). Can we retrieve the data from data file in Oracle database?
2
votes
1answer
1k views

Recover database until cancel without prompt?

The statement: RECOVER DATABASE UNTIL CANCEL prompts once to select the archive log file. Is there a way to pre specify the value so as to be able to use it in a script without prompt? I have ...
2
votes
1answer
439 views

Recovering from a stuck query

I have a big DELETE query (deleting 20M rows from a 600M row table with condition according to indexed column) that is stuck - running already for 17hrs. Because it's an InnoDB table, killing it will ...
3
votes
3answers
11k views

ERROR Cannot find or open table?

MySQL version: 5.5.24 Due to the following problem: mysql> desc reportingdb.v3_zone_date_cpm7k; ERROR 1146 (42S02): Table 'reportingdb.v3_zone_date_cpm7k' doesn't exist ...
3
votes
1answer
203 views

sql server down bad things happens

Following Situation: You have a Database with very high transactions, the Database is about 4100 GBs The Recovery Modell from your Database is full Every week you make a full backup from your ...
2
votes
1answer
10k views

MySQL: InnoDB keeps crashing - how to recover?

# free -m total used free shared buffers cached Mem: 48289 35288 13000 0 347 30399 -/+ buffers/cache: 4541 43747 ...
0
votes
1answer
324 views

Salvaging data from corrupt tables PostgreSQL

Am in the process of salvaging very crucial data from a corrupted database. Am getting the following error from a very crucial table ERROR: invalid page header in block 94206 of relation ...
0
votes
1answer
569 views

percona mysql crashing at innodb initialization

i have a slave percona db setup that also maintains few of it's own tables it started crashing with this in error.log: InnoDB: In a MySQL replication slave the last master binlog file InnoDB: ...
7
votes
2answers
670 views

PostgreSQL PITR restore

I have a PostgreSQL 9.1 server running on a CentOS 5.8 32bit OS and I have enabled WAL archiving. On this server, there are three databases: databaseA, databaseB and databaseC. Someone deletes a ...
5
votes
3answers
461 views

Is it possible to recover day's worth of queries from sql server log file?

I lost all data entered and edited in my system yesterday, and my ISP has announced to me that last night's backup is corrupt and cannot be recovered. Is there any way to access the database's log ...
3
votes
2answers
9k views

How do I copy databases from Postgres 8.4 to Postgres 9.1?

My trac server recently started having issues. It was running a very outdated version of Ubuntu, and I was unable to properly use apt-get to correct the issues I was having. So instead I backed up the ...
4
votes
2answers
574 views

Change Location of VALIDATE RECOVERY FILES work area

Is there a way to tell the VALIDATE RECOVERY FILES command to use a different location with more available disk space? When I run the command in RMAN, it fails with the following error stack: ...
5
votes
1answer
226 views

Electricity off while shrinking database, how can I recover my database?

While i execute shrink database, the electricity has been gone down, I can't access my database now, it is (In Recovery), how can i recover it?? Note: it is a very huge database: 25 GB. EDIT: My ...
1
vote
1answer
252 views

Can I recover an overwritten incident trace file?

I was looking at incident trace file in oracle database but some how that file got overwritten. As of now I have ecrep_ora_26467_i49966.trm but trhe corresponding .trc file is lost. is it possible to ...
4
votes
2answers
3k views

Recover deleted records [duplicate]

Possible Duplicate: How do I get back some deleted records? Our C#.NET application mistakenly deleted all records from all tables of its database. The application automatically takes ...
1
vote
2answers
6k views

Recover from Postgres FATAL: could not open file pg_tblspc/

I have a pretty big PostgreSQL 9.1.3 running on Ubuntu 10.04. The data is spread over multiple tablespaces = physical drives. One of these drives is gone, so the directory of that tablespace doesn't ...
4
votes
4answers
2k views

RSync Database File Deltas in SQL Server 2008

Alright, I feel like this is a terrible idea, but I need some help understanding why this is bad: I'm still working on implementing a disaster recovery/business continuity solution for our ...
1
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1answer
147 views

SQL ServerRecovery Model Change Tracking

Are SQL Server recovery model changes logged anywhere...WMI, error logs...etc? For instance, if I change from FULL to SIMPLE, is this recorded anywhere?
2
votes
1answer
285 views

Initial recovery Postgres with backup in sync commit mode

I've got a master and a slave postgres 9.1.3 database. I would like to init the backup database for the first time. I did the following steps: Stopped master Copied all files to Slave Create ...
2
votes
1answer
260 views

Postgres synchronized backup - what's with the archive?

I am setting up a Postgres 9.1 master and a hot standby-server. I read the documentation but I'm not quite sure yet what I should do with my WAL files. Every commit is done on both servers before ...
2
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0answers
51 views

Can you recover to a point in time using the LDF? [duplicate]

Possible Duplicate: How do I get back some deleted records? A coworker accidentally ran an update statement that needs to be reverted. The last backup is about 12 hours old. Is there any ...
9
votes
2answers
3k views

Restore bak file to smaller mdf and ldf database files

I have a legacy database whose nightmarish lack of design I will not get into here, but the files on the server are (relatively) enormous. I have: MyDatabase.mdf: 24.8GB MyDatabase.ldf: 114.6GB This ...
3
votes
3answers
1k views

Is it good idea to change Simple Recover Model into Bulk-Logged on ETL system?

We are having an ETL process which inserts lots of data into tables. This database is set to Simple Recovery Model and the transaction log is growing a lot. I was thinking that would it help to set ...
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2answers
1k views

MySQL Database and Table Loss

I have installed mysql and XAMPP on my system. I wanted to remove the mysql service of XAMPP. After removing it, I tried to install the new service for mysql using "MySQLInstanceConfig.exe". but now I ...
3
votes
1answer
1k views

recover broken msde 2000 8.0 database

i have a msde (mssql) 2000 / v8.0 database that has one corrupted table. Microsoft SQL Server Management Studio Express can see the database STRUCTURE, but not the data. i can see the DATA of the ...
4
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1answer
663 views

Mysql crashed once with an “Assertion failure” this morning, how worried should I be? best way to diagnose this?

So for the first time our production system produced the below assertion failure. The system came up without issues after mysqld automatically restarted itself and rolled back some transactions.. ...
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1answer
1k views

Recover PostgreSQL database data

I am using PostgreSQL in my project, Now by mistake I have deleted some records of one of my tables. Now is there any way to recover deleted Records in PostgreSQL?