SysTools SQL Transaction Log Reader 5.0 : Know What is New

The SQL Transaction Log reader is a standalone utility, which helps to view SQL server transaction log files without any difficulty. It is capable enough to preview LDF activity, including Transaction, Time, Name, Query and Table Name.

Moreover, it allows a user to fetch and display all records from the live database. This application offers an option to filter and export as SQL database, as SQL script or CSV file format. It supports to analyze one or more NDF data files without losing a single bit of data. Also, it is compatible with all latest Windows versions, including Windows 10 and its below versions.

SQL Transaction Log reader Tool: Demo vs Licensed

The SQL Log viewer is available in two different versions i.e., Demo and Licensed Version. Let us have a look:

  • Demo Version: The demo version of the software is freely available for download and supports to preview of SQL Server Transactions (INSERT, UPDATE, DELETE), preview Login users that has made changes on database tables, transaction Query, Time. But, doesn’t allow to export Transaction details for recovery purpose.
  • Licensed Version: The licensed version of SQL Transaction Log reader tool permit users to preview all the records within the database. Moreover, it can open and read the complete log activity in SQL server database. Also, it allow you to export all tables data along with deleted records direct in SQL Server Database or SQL Server Compatible script or CSV format.

The Demo version of this SQL Log Recovery available for download in SysTools Group Official Website

Preview SQL Logs

What is New Added in SQL Log Reader Tool to Explore LDF

  1. Allows to View Multiple LDF Files: SQL LDF File Viewer permits you to open and read multiple transaction log files activity in single go. For this, you just need to add parent .ldf file of your database, if you are scanning with offline option. The software will scan and preview transaction activities of all other .ldf database files of that database.
  2. Analyze Same record Update
    Multiple Times and then Delete: SQL log file reader allow you to preview the transactional activity of same record (Updated multiple times and then Delete). This will allow users to track all the database changes for a specific record.
  3. Auto Fetch SQL Server Name: While scanning the transaction logs of a specific database with Online DB option,The SQL transaction log reader tool will allow you to click on drop-down button to auto fetch the Server Name. In case, the software doesn’t shows the desired Server Name, then you can enter it manually.

Existing Features of SQL Log Viewer

  1. Preview All Transaction Records: SQL Server log file viewer scans and load all available tables transactional activities, present in SQL database and creates a preview. It will help to view SQL transaction log file with fields such as Transaction, transaction time, Table name and query. Users can view all records with Login Name Authentication for Insert, Delete, Update etc.
  2. Option to Sort LDF File Elements: The sorting option is available within SQL Log viewer to re-arrange the order of the listed items. Moreover, users can sort each element according to their properties such as transaction, transaction name, transaction time, table name, and query.
  3. Scan with Online or Offline Options: The SQL log file viewer offers two different scanning options to read transactional activities of your database. The Online option asks for SQL Server information like: Server Name, Authentication Type. In Offline option, the software will allow you to browse .ldf file along with its associated .mdf file and preview the transaction log activities.
  4. Export Selective Tables: While moving the SQL LDF file queries, you can check or uncheck all tables for saving only selected data. If you want to restore SQL Log file data from the desired table, then, select and export the desired tables direct to SQL Server Database or SQL Server compatible script or CSV format.

Technical Description of SQL Server LDF Reader Tool

Processor Intel® Pentium® 1 GHz processor (x86, x64) or equivalent
Support RAM Around 2GB (gigabyte) of RAM
Hard Disk Storage Space Minimum 100 MB space for installation
Operating System Windows 10 & all below editions

Final Verdict

After considering the overall functionality of the software, we can summarize that SQL Transaction Log Reader is a reliable tool that allows a user to read and view multiple .ldf files. The software is capable enough to view SQL transaction log with fields such as Transaction, transaction time, Table name and query. Regardless, we can say that the SQL log Viewer is a robust software due to its great features.

How to Fix Corruption Related Issues in SQL Server Database

SQL database is a popular and useful relational database, but it is not free from technical flaws. SQL users often face various corruption related issues in SQL Server database. These issues occur due to the damage or corruption in the database of SQL Server. As these are common issues, SQL users must have clear concept regarding these issues. We will be discussing some major corruption related issues of SQL database and their symptoms. Users will also learn the remedial methods of these issues from this post. Let’s begin our discussion with the SQL Server errors and their symptoms.

Issues Related to SQL Server Corruption

Due to damaged or corrupt SQL Server database, users have to encounter different issues. We will discuss three major issues here.

SQL Fatal Error 823:

This error is caused by database corruption or some discrepancies of file system. It indicates that underlying hardware or driver situated n the path of I/O request is having some problem. This problem will generate some error messages that will display these information:

  • Operating system’s error code and error description
  • The file name that was executed against I/O operation
  • If I/O operation request is written or read

SQL Error 5172

This error is caused by unhealthy MDF files. It occurs due to the mismatched header file information, so accessing data becomes really tough. In such cases, recovering damaged SQL database is very important. Here are the major causes of error 5172:

  • Sudden shutdown of system
  • Hardware malfunctioning
  • Improper shut down of SQL Server
  • Virus or Malware attack

3. SQL Error 8946: If a particular assigned page does not contain valid page header, error 8946 can appear. If the header gets damaged, the entire page faces corruption. This results in data loss and inaccessible file. Power failure, hardware problems, virus attack, etc. are responsible for this particular error.

How to Resolve Corruption Related Issues in SQL Server Database

If you are facing one of the above corruption based issues in your SQL database, it means the database has been corrupt or damaged. The only way to resolve these issues is to free the SQL database from all types of corruption. To repair the corrupt database of SQL Server, users can adopt any of the two different methods. One is called manual method and another is called one-stop method.

Method 1: Manually Fix SQL Database Corruption

If users want to fix their corrupt SQL database manually, they can try these different methods. First of all, they can restore updated backup of SQL Server. They can also try database console commands to repair database. DBCC Repair commands that can fix minor corruption of SQL database.

Limitations of Manual Technique

These manual methods have got some limitations too. The biggest limitation is that none of these methods guarantee to recover SQL Server database. Moreover, all these methods take a lot of time to perform. Users need to be technically expert to execute these steps. Inexperienced people needs to be careful about their database, when performing these methods. Also, major corruptions cannot be fixed by these methods.

Method 2: Fix Corrupt SQL Server Database using Sure-Shot Solution

It is clear from above discussion that manual methods cannot fix damaged database for sure. To repair corrupt database, users have to apply the one-stop solution. Using third-party tools is called sure-shot solution as they can fix all types of database corruption. SysTools SQL Database Repair is such a tool that can remove both major and minor SQL Server database corruption. It can fix corruption of SQL Server 2016 & all previous versions. This program is also capable of recovering data from MDF files affected by Wallet Ransomware.

Conclusion

If you are facing any of these corruption related issues in SQL Server database, be sure that SQL Server has been damaged. Users need to fix the SQL Server in order to get rid of these issues. we have mentioned some methods to make your SQL database corruption free. Users can try manual methods, but there is no guarantee that the damaged database will be fixed for sure. One can also try the third party tool to recover corrupted database. It can easily fix the damage of SQL Server and all related issues will get solved.

Best Solutions to Repair Suspect Database in MS SQL Server

To repair Suspect database error in MS SQL 2005, 2008, 2012, 2014, 2016 and 2017 read this article to recover SQL Server database from Suspect mode.

What is Suspect Database Error?

Microsoft SQL Server serves as a storehouse for data that is needed for different software applications on a single system or across a network. Sometimes a user may face a situation where a database in the SQL Server instance currently under running state is marked as Suspect. This condition will lead to a failure in creating a connection with the database. Such a database which is tagged as Suspect can be accessed by removing the causes for this problem. The forthcoming article will discuss the causes for this problem to occur and the possible solutions to repair suspect database from SQL Server 2005, 2008, & 2012.

The error message shown to user is somewhat similar to the one given below

Starting up database ‘abc_d’.
Error: 9003, Severity: 17, State: 5.

The log scan number (189623:15:2) passed to log scan in database ‘abc_d’ is not valid.

The above-mentioned error shows that there is some corruption of the log file(.ldf) and does not adhere to the data file(.mdf). Other error messages can also be shown depending upon the cause due to which the database has been categorized as Suspect.

User queries help in getting a better idea about the problem and to recover SQL database.

“I am currently using SQL Server 2008 edition on my Windows 7 system and there are many applications of mine that are dependant on it. Recently I have been facing difficulties in connecting my applications to some of my Databases and they are being shown as Suspect. Kindly guide me to recover SQL database from Suspect mode.”

SQL Server Database Shown as Suspect: Possible Reasons

There are a number of reasons why SQL Server marks a particular Database as Suspect.
Some of these reasons are mentioned as follows

  • Corruption present in the SQL Server Database
  • Insufficient space available to SQL server to repair suspect database during startup.
  • The files of Database are in use by OS or other Backup software
  • Sudden SQL Server Shutdown, Hardware or Power Failure

There exist a number of techniques for solving the issue of Suspect SQL database and broadly they can be classified as Manual and Automated. The upcoming section will try and explain a Manual technique for achieving this goal.

Quick Tip: If you want to skip the tedious & complex manual approach then it is highly advised to use an automatic tool such as SQL Recovery to efficiently recover SQL database from Suspect mode

Repair Suspect Database Manually

Implement the steps given below to recover Suspect SQL Server Database and to access important data.

1. Bring Database in Emergency Mode using the following code

USE master
GO

ALTER DATABASE abc_d SET EMERGENCY
GO

2. Execute DBCC CHECKDB command.
This will scan and check the physical and logical integrity of objects present in the marked database

DBCC CHECKDB (abc_d )
GO

3. Bring the Database in Single Mode using the below-mentioned query

ALTER DATABASE abc_d SET SINGLE_USER WITH ROLLBACK IMMEDIATE
GO

4. After the Database is in Single Mode, execute the following code to repair suspect database

DBCC CHECKDB (abc_d, REPAIR_ALLOW_DATA_LOSS)
GO

5. Lastly, restore Multiple access to the database by executing the query

ALTER DATABASE abc_d SET MULTI_USER
GO

Repair Suspect Database by Manual Method: Shortcomings

  • Manual solution consumes a lot of the users’ time for SQL server suspect database repair
  • High risk of losing data forever during manual approach to recover SQL database from suspect mode
  • A Large number of queries to recover SQL database make it complex for non-technical users.
Conclusion

The Suspect database problem is a common issue faced by users of SQL Server database and it has various causes. There is a set of TSQL commands to overcome this error but it poses many issues during implementation. It is better to use automated tools designed specifically for this purpose to repair suspect database.

Learn How SQL Server Large Transaction Log Affect Performance

Whenever a user adds, delete, or edit any record in the SQL Server all the changes are maintained in the transaction log. In addition, the background process keeps on writing the each and every transaction in the log and to the database. After that, the transaction log is marked as written. There are two types of recovery model i.e. Simple and Full Recovery Model is used by the database in the SQL Server. However, if the database uses full recovery model all the written transaction logs are maintained in the log. Moreover, it becomes mandatory for the user to manage the transaction log file and take backup on the daily basis. In addition, the transaction log files are big enough if the full recovery model is used for the database. Apart from this, the Transaction logs in the SQL server are the always auto-growth and it is also advised not to turn off the auto-growth feature. Because it is helpful in the case of emergencies.

More About the SQL Server Transaction Log Size

The Transaction Log files in the SQL Server database is made up of one or more physical files and SQL Server writes to one physical transaction log file at a time. The internal structure of the physical files that is used by the SQL Server for transaction log files is known as Virtual Log Files (VLFs). However, the number and size of VLFs files inside the transaction log files directly depend on the number of factors. The size of VLFs files is determined at the time when the transaction log file is created or extended.

Effect of Large Transaction Log in SQL Server Performance

SQL Server transaction log file is comprised of small parts known as virtual log files whose size is not fixed. However, the main motive is to keep the small number of the virtual log files for the transaction log file. It is because SQL Server manages the smaller number of files more easily.

  • If there are a huge number of virtual log files then, there can be two possible reasons behind this. One is the small transaction log that has grown up (manually or automatically) in very small segments and another is a problematic situation where the large growth segments were configured but accidentally small VLFs were configured in the Transaction log. However, if the Virtual Log Files grows unnecessarily large due to auto growth, the logs become fragmented and may results in delay also. Moreover, it also slows down the recovery process that is why having so many or very little virtual log files results in bad performance.
  • Apart from all this, the auto-growth option is also offered, which is turned on by default. If the auto-growth settings are not handled in an appropriate manner, a SQL Server database will be forced to auto-grow that may lead to the serious performance issues. It is because the SQL Server will halt all processing until the auto-grow event is completed. However, the auto-growth event will take lots of space due to the physical organization of the hard drive that is not close physically to the previous one occupied by the transaction log file. This results in the physical fragmentation of the files that also causes slower response.
  • It is always suggested to backup the transaction logs regularly. However, if the backup process fails, then the log files will grow largely and left with over-sized transaction file. It is because old transaction logs are not removed which makes transaction logs increase at a rapid rate. If the SQL Server database is having a large transactions logs then, it has a bad effect on the performance of the SQL Server such as:
  1. If the transaction log file is full in the SQL Server database, it degrades the performance of the SQL Server.
  2. It also slows down the speed of the transactional log backup process.
  3. In addition, the over-sized transaction logs decrease the disk space also because old transaction logs are not removed yet.

How to Resolve Over-sized Transnational Log Problem?

The number of VLFs files is increased by an auto-grow event, that has a common process but requires strict rules to prevent the unplanned issues with space or unresponsiveness. Therefore, to reduce the bad effect of over-sized transaction log files on the performance of the SQL Server, it is necessary to resolve the issue.

The most common solution is that reduce the number of virtual log files in the transaction logs files. Now, to do the same follow the three simple steps discussed below:

  1. Backup the Transaction Log files.
  2. After that, shrink the transaction log files.

It is because the number of virtual log files in the transaction logs is reduced by shrinking the SQL Server transaction log file that needs strict rules also to avoid deleting the data that has not been backed up till now.

Conclusion

Transaction Log files are the most important log files in any SQL Server database, which grows always because the auto-growth option is turn on by default. The internal structure of the transaction log file has many virtual log files. However, if there are an excessive number of VLFs then, it has some bad effects on the performance of SQL Server. Therefore, it is necessary to properly control the auto-growth feature of the transaction log files.