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Error: MySQL shutdown unexpectedly

Here is the screenshot of my XAMPP Control panel:

Screen Shot

Here is my Error Log :

2019-11-27  7:54:14 0 [Note] InnoDB: Mutexes and rw_locks use Windows interlocked functions
2019-11-27  7:54:14 0 [Note] InnoDB: Uses event mutexes
2019-11-27  7:54:14 0 [Note] InnoDB: Compressed tables use zlib 1.2.11
2019-11-27  7:54:14 0 [Note] InnoDB: Number of pools: 1
2019-11-27  7:54:14 0 [Note] InnoDB: Using SSE2 crc32 instructions
2019-11-27  7:54:14 0 [Note] InnoDB: Initializing buffer pool, total size = 16M, instances = 1, chunk size = 16M
2019-11-27  7:54:14 0 [Note] InnoDB: Completed initialization of buffer pool
2019-11-27  7:54:14 0 [Note] InnoDB: Starting crash recovery from checkpoint LSN=1791378
2019-11-27  7:54:14 0 [Note] InnoDB: 128 out of 128 rollback segments are active.
2019-11-27  7:54:14 0 [Note] InnoDB: Removed temporary tablespace data file: "ibtmp1"
2019-11-27  7:54:14 0 [Note] InnoDB: Creating shared tablespace for temporary tables
2019-11-27  7:54:14 0 [Note] InnoDB: Setting file 'C:xamppmysqldataibtmp1' size to 12 MB. Physically writing the file full; Please wait ...
2019-11-27  7:54:14 0 [Note] InnoDB: File 'C:xamppmysqldataibtmp1' size is now 12 MB.
2019-11-27  7:54:14 0 [Note] InnoDB: Waiting for purge to start
2019-11-27  7:54:15 0 [Note] InnoDB: 10.3.16 started; log sequence number 1791387; transaction id 163
2019-11-27  7:54:15 0 [Note] InnoDB: Loading buffer pool(s) from C:xamppmysqldataib_buffer_pool
2019-11-27  7:54:15 0 [Note] InnoDB: Buffer pool(s) load completed at 191127  7:54:15
2019-11-27  7:54:15 0 [Note] Plugin 'FEEDBACK' is disabled.
2019-11-27  7:54:15 0 [Note] Server socket created on IP: '::'.
2019-11-28  5:07:13 0 [Note] InnoDB: Mutexes and rw_locks use Windows interlocked functions
2019-11-28  5:07:13 0 [Note] InnoDB: Uses event mutexes
2019-11-28  5:07:13 0 [Note] InnoDB: Compressed tables use zlib 1.2.11
2019-11-28  5:07:13 0 [Note] InnoDB: Number of pools: 1
2019-11-28  5:07:13 0 [Note] InnoDB: Using SSE2 crc32 instructions
2019-11-28  5:07:13 0 [Note] InnoDB: Initializing buffer pool, total size = 16M, instances = 1, chunk size = 16M
2019-11-28  5:07:13 0 [Note] InnoDB: Completed initialization of buffer pool
2019-11-28  5:07:13 0 [Note] InnoDB: Starting crash recovery from checkpoint LSN=2039505
2019-11-28  5:07:13 0 [Note] InnoDB: 128 out of 128 rollback segments are active.
2019-11-28  5:07:14 0 [Note] InnoDB: Removed temporary tablespace data file: "ibtmp1"
2019-11-28  5:07:14 0 [Note] InnoDB: Creating shared tablespace for temporary tables
2019-11-28  5:07:14 0 [Note] InnoDB: Setting file 'C:xamppmysqldataibtmp1' size to 12 MB. Physically writing the file full; Please wait ...
2019-11-28  5:07:14 0 [Note] InnoDB: File 'C:xamppmysqldataibtmp1' size is now 12 MB.
2019-11-28  5:07:14 0 [Note] InnoDB: Waiting for purge to start
2019-11-28  5:07:14 0 [Note] InnoDB: 10.3.16 started; log sequence number 2039514; transaction id 684
2019-11-28  5:07:14 0 [Note] InnoDB: Loading buffer pool(s) from C:xamppmysqldataib_buffer_pool
2019-11-28  5:07:14 0 [Note] Plugin 'FEEDBACK' is disabled.
2019-11-28  5:07:14 0 [Note] Server socket created on IP: '::'.
2019-11-28  5:10:34 0 [Note] InnoDB: Mutexes and rw_locks use Windows interlocked functions
2019-11-28  5:10:34 0 [Note] InnoDB: Uses event mutexes
2019-11-28  5:10:34 0 [Note] InnoDB: Compressed tables use zlib 1.2.11
2019-11-28  5:10:34 0 [Note] InnoDB: Number of pools: 1
2019-11-28  5:10:34 0 [Note] InnoDB: Using SSE2 crc32 instructions
2019-11-28  5:10:34 0 [Note] InnoDB: Initializing buffer pool, total size = 16M, instances = 1, chunk size = 16M
2019-11-28  5:10:34 0 [Note] InnoDB: Completed initialization of buffer pool
2019-11-28  5:10:34 0 [Note] InnoDB: Starting crash recovery from checkpoint LSN=2040167
2019-11-28  5:10:35 0 [Note] InnoDB: 128 out of 128 rollback segments are active.
2019-11-28  5:10:35 0 [Note] InnoDB: Removed temporary tablespace data file: "ibtmp1"
2019-11-28  5:10:35 0 [Note] InnoDB: Creating shared tablespace for temporary tables
2019-11-28  5:10:35 0 [Note] InnoDB: Setting file 'C:xamppmysqldataibtmp1' size to 12 MB. Physically writing the file full; Please wait ...
2019-11-28  5:10:35 0 [Note] InnoDB: File 'C:xamppmysqldataibtmp1' size is now 12 MB.
2019-11-28  5:10:35 0 [Note] InnoDB: Waiting for purge to start
2019-11-28  5:10:35 0 [Note] InnoDB: 10.3.16 started; log sequence number 2040176; transaction id 700
2019-11-28  5:10:35 0 [Note] InnoDB: Loading buffer pool(s) from C:xamppmysqldataib_buffer_pool
2019-11-28  5:10:35 0 [Note] Plugin 'FEEDBACK' is disabled.
2019-11-28  5:10:35 0 [Note] Server socket created on IP: '::'.
2019-11-28  5:14:52 0 [Note] InnoDB: Mutexes and rw_locks use Windows interlocked functions
2019-11-28  5:14:52 0 [Note] InnoDB: Uses event mutexes
2019-11-28  5:14:52 0 [Note] InnoDB: Compressed tables use zlib 1.2.11
2019-11-28  5:14:52 0 [Note] InnoDB: Number of pools: 1
2019-11-28  5:14:52 0 [Note] InnoDB: Using SSE2 crc32 instructions
2019-11-28  5:14:52 0 [Note] InnoDB: Initializing buffer pool, total size = 16M, instances = 1, chunk size = 16M
2019-11-28  5:14:52 0 [Note] InnoDB: Completed initialization of buffer pool
2019-11-28  5:14:52 0 [Note] InnoDB: Starting crash recovery from checkpoint LSN=2040845
2019-11-28  5:14:53 0 [Note] InnoDB: 128 out of 128 rollback segments are active.
2019-11-28  5:14:53 0 [Note] InnoDB: Removed temporary tablespace data file: "ibtmp1"
2019-11-28  5:14:53 0 [Note] InnoDB: Creating shared tablespace for temporary tables
2019-11-28  5:14:53 0 [Note] InnoDB: Setting file 'C:xamppmysqldataibtmp1' size to 12 MB. Physically writing the file full; Please wait ...
2019-11-28  5:14:53 0 [Note] InnoDB: File 'C:xamppmysqldataibtmp1' size is now 12 MB.
2019-11-28  5:14:53 0 [Note] InnoDB: 10.3.16 started; log sequence number 2040854; transaction id 711
2019-11-28  5:14:53 0 [Note] InnoDB: Loading buffer pool(s) from C:xamppmysqldataib_buffer_pool
2019-11-28  5:14:53 0 [Note] Plugin 'FEEDBACK' is disabled.
2019-11-28  5:14:53 0 [Note] Server socket created on IP: '::'.
2019-11-28  5:19:27 0 [Note] InnoDB: Mutexes and rw_locks use Windows interlocked functions
2019-11-28  5:19:27 0 [Note] InnoDB: Uses event mutexes
2019-11-28  5:19:27 0 [Note] InnoDB: Compressed tables use zlib 1.2.11
2019-11-28  5:19:27 0 [Note] InnoDB: Number of pools: 1
2019-11-28  5:19:27 0 [Note] InnoDB: Using SSE2 crc32 instructions
2019-11-28  5:19:27 0 [Note] InnoDB: Initializing buffer pool, total size = 16M, instances = 1, chunk size = 16M
2019-11-28  5:19:27 0 [Note] InnoDB: Completed initialization of buffer pool
2019-11-28  5:19:27 0 [Note] InnoDB: Starting crash recovery from checkpoint LSN=5222673
2019-11-28  5:19:28 0 [Note] InnoDB: 128 out of 128 rollback segments are active.
2019-11-28  5:19:28 0 [Note] InnoDB: Removed temporary tablespace data file: "ibtmp1"
2019-11-28  5:19:28 0 [Note] InnoDB: Creating shared tablespace for temporary tables
2019-11-28  5:19:28 0 [Note] InnoDB: Setting file 'C:xamppmysqldataibtmp1' size to 12 MB. Physically writing the file full; Please wait ...
2019-11-28  5:19:28 0 [Note] InnoDB: File 'C:xamppmysqldataibtmp1' size is now 12 MB.
2019-11-28  5:19:28 0 [Note] InnoDB: 10.3.16 started; log sequence number 5222682; transaction id 1347
2019-11-28  5:19:28 0 [Note] InnoDB: Loading buffer pool(s) from C:xamppmysqldataib_buffer_pool
2019-11-28  5:19:28 0 [Note] Plugin 'FEEDBACK' is disabled.
2019-11-28  5:19:28 0 [Note] Server socket created on IP: '::'.
2019-11-28  5:28:57 0 [Note] InnoDB: Mutexes and rw_locks use Windows interlocked functions
2019-11-28  5:28:57 0 [Note] InnoDB: Uses event mutexes
2019-11-28  5:28:57 0 [Note] InnoDB: Compressed tables use zlib 1.2.11
2019-11-28  5:28:57 0 [Note] InnoDB: Number of pools: 1
2019-11-28  5:28:57 0 [Note] InnoDB: Using SSE2 crc32 instructions
2019-11-28  5:28:57 0 [Note] InnoDB: Initializing buffer pool, total size = 16M, instances = 1, chunk size = 16M
2019-11-28  5:28:57 0 [Note] InnoDB: Completed initialization of buffer pool
2019-11-28  5:28:57 0 [Note] InnoDB: Starting crash recovery from checkpoint LSN=8402858
2019-11-28  5:28:57 0 [Note] InnoDB: Resizing redo log from 2*5242880 to 2*524288000 bytes; LSN=8402876
2019-11-28  5:28:58 0 [Note] InnoDB: Starting to delete and rewrite log files.
2019-11-28  5:28:58 0 [Note] InnoDB: Setting log file C:xamppmysqldataib_logfile101 size to 524288000 bytes
2019-11-28  5:28:58 0 [Note] InnoDB: Setting log file C:xamppmysqldataib_logfile1 size to 524288000 bytes
2019-11-28  5:28:58 0 [Note] InnoDB: Renaming log file C:xamppmysqldataib_logfile101 to C:xamppmysqldataib_logfile0
2019-11-28  5:28:58 0 [Note] InnoDB: New log files created, LSN=8402876
2019-11-28  5:28:58 0 [Note] InnoDB: 128 out of 128 rollback segments are active.
2019-11-28  5:28:58 0 [Note] InnoDB: Removed temporary tablespace data file: "ibtmp1"
2019-11-28  5:28:58 0 [Note] InnoDB: Creating shared tablespace for temporary tables
2019-11-28  5:28:58 0 [Note] InnoDB: Setting file 'C:xamppmysqldataibtmp1' size to 12 MB. Physically writing the file full; Please wait ...
2019-11-28  5:28:58 0 [Note] InnoDB: File 'C:xamppmysqldataibtmp1' size is now 12 MB.
2019-11-28  5:28:58 0 [Note] InnoDB: Waiting for purge to start
2019-11-28  5:28:58 0 [Note] InnoDB: 10.3.16 started; log sequence number 8402876; transaction id 1981
2019-11-28  5:28:58 0 [Note] InnoDB: Loading buffer pool(s) from C:xamppmysqldataib_buffer_pool
2019-11-28  5:28:58 0 [Note] Plugin 'FEEDBACK' is disabled.
2019-11-28  5:28:58 0 [Note] Server socket created on IP: '::'.
2019-11-28 22:10:10 0 [Note] InnoDB: Mutexes and rw_locks use Windows interlocked functions
2019-11-28 22:10:10 0 [Note] InnoDB: Uses event mutexes
2019-11-28 22:10:10 0 [Note] InnoDB: Compressed tables use zlib 1.2.11
2019-11-28 22:10:10 0 [Note] InnoDB: Number of pools: 1
2019-11-28 22:10:10 0 [Note] InnoDB: Using SSE2 crc32 instructions
2019-11-28 22:10:10 0 [Note] InnoDB: Initializing buffer pool, total size = 16M, instances = 1, chunk size = 16M
2019-11-28 22:10:10 0 [Note] InnoDB: Completed initialization of buffer pool
2019-11-28 22:10:10 0 [Note] InnoDB: Starting crash recovery from checkpoint LSN=27153381
2019-11-28 22:10:11 0 [Note] InnoDB: 128 out of 128 rollback segments are active.
2019-11-28 22:10:11 0 [Note] InnoDB: Removed temporary tablespace data file: "ibtmp1"
2019-11-28 22:10:11 0 [Note] InnoDB: Creating shared tablespace for temporary tables
2019-11-28 22:10:11 0 [Note] InnoDB: Setting file 'C:xamppmysqldataibtmp1' size to 12 MB. Physically writing the file full; Please wait ...
2019-11-28 22:10:11 0 [Note] InnoDB: File 'C:xamppmysqldataibtmp1' size is now 12 MB.
2019-11-28 22:10:11 0 [Note] InnoDB: 10.3.16 started; log sequence number 27153390; transaction id 4845
2019-11-28 22:10:11 0 [Note] InnoDB: Loading buffer pool(s) from C:xamppmysqldataib_buffer_pool
2019-11-28 22:10:11 0 [Note] Plugin 'FEEDBACK' is disabled.
2019-11-28 22:10:11 0 [Note] Server socket created on IP: '::'.
2019-11-28 23:46:45 0 [Note] InnoDB: Mutexes and rw_locks use Windows interlocked functions
2019-11-28 23:46:45 0 [Note] InnoDB: Uses event mutexes
2019-11-28 23:46:45 0 [Note] InnoDB: Compressed tables use zlib 1.2.11
2019-11-28 23:46:45 0 [Note] InnoDB: Number of pools: 1
2019-11-28 23:46:45 0 [Note] InnoDB: Using SSE2 crc32 instructions
2019-11-28 23:46:45 0 [Note] InnoDB: Initializing buffer pool, total size = 16M, instances = 1, chunk size = 16M
2019-11-28 23:46:45 0 [Note] InnoDB: Completed initialization of buffer pool
2019-11-28 23:46:45 0 [Note] InnoDB: Starting crash recovery from checkpoint LSN=27184739
2019-11-28 23:46:45 0 [Note] InnoDB: 128 out of 128 rollback segments are active.
2019-11-28 23:46:46 0 [Note] InnoDB: Removed temporary tablespace data file: "ibtmp1"
2019-11-28 23:46:46 0 [Note] InnoDB: Creating shared tablespace for temporary tables
2019-11-28 23:46:46 0 [Note] InnoDB: Setting file 'C:xamppmysqldataibtmp1' size to 12 MB. Physically writing the file full; Please wait ...
2019-11-28 23:46:46 0 [Note] InnoDB: File 'C:xamppmysqldataibtmp1' size is now 12 MB.
2019-11-28 23:46:46 0 [Note] InnoDB: Waiting for purge to start
2019-11-28 23:46:46 0 [Note] InnoDB: 10.3.16 started; log sequence number 27184748; transaction id 4940
2019-11-28 23:46:46 0 [Note] InnoDB: Loading buffer pool(s) from C:xamppmysqldataib_buffer_pool
2019-11-28 23:46:46 0 [Note] Plugin 'FEEDBACK' is disabled.
2019-11-28 23:46:46 0 [Note] Server socket created on IP: '::'.
2019-11-29  4:50:19 0 [Note] InnoDB: Mutexes and rw_locks use Windows interlocked functions
2019-11-29  4:50:19 0 [Note] InnoDB: Uses event mutexes
2019-11-29  4:50:19 0 [Note] InnoDB: Compressed tables use zlib 1.2.11
2019-11-29  4:50:19 0 [Note] InnoDB: Number of pools: 1
2019-11-29  4:50:19 0 [Note] InnoDB: Using SSE2 crc32 instructions
2019-11-29  4:50:19 0 [Note] InnoDB: Initializing buffer pool, total size = 16M, instances = 1, chunk size = 16M
2019-11-29  4:50:19 0 [Note] InnoDB: Completed initialization of buffer pool
2019-11-29  4:50:19 0 [Note] InnoDB: Starting crash recovery from checkpoint LSN=27189447
2019-11-29  4:50:20 0 [Note] InnoDB: 128 out of 128 rollback segments are active.
2019-11-29  4:50:20 0 [Note] InnoDB: Removed temporary tablespace data file: "ibtmp1"
2019-11-29  4:50:20 0 [Note] InnoDB: Creating shared tablespace for temporary tables

Database Administrators Asked by md maruf on November 21, 2021

2 Answers

2 Answers

I came across similar problem and tried this Stack Overflow answer by Fabrizio Valencia. It worked.

Stop there! Please do not delete anything! First try to do what I did.

OK, none of the listed answers here solved my problem, even, some of the answers were making me lost all my db data. So I did exactly what the error message in XAMPP message panel told me to do. So I did this:

  1. Rename the folder mysql/data to mysql/data_old (you can use any name)
  2. Create a new folder mysql/data
  3. Copy the content that resides in mysql/backup to the new mysql/data folder
  4. Copy all your database folders that are in mysql/data_old to mysql/data
  5. Finally copy the ibdata1 file from mysql/data_old and replace it inside mysql/data folder
  6. Start MySQL from XAMPP control panel

And, voilà. No databases lost, no ports changed, no run as administrator, no force recovery, no kill mysqld process, no restoring from previous versions, no more errors.

Answered by User_beginner on November 21, 2021

IT WORKS FOR ME (Partially) : Please read all

I copied all data (folders and files) from "xamppmysqlbackup" and pasted and replaced it inside "xamppmysqldata". That's all...

Note: Make sure you have backup of these two folders ("backup" & "data") including files and folders in another place. So that you can rollback anytime.

Warning: Another problem arose for me. I was unable to access few Tables from different Databases. DB Tables Rows,Type, Size, Overhead columns are empty and Collation column is showing "in use".

Database table's list

But, it was okay for me. Because most of them are running. But, Still I am looking for the answer. For that reason, I am sharing my MySQL logs before and after fixing the problem. So that it might help others to find the actual reason.

MySQL Logs: Before fixing the issue (2020-07-22 10:18:46)

InnoDB: Mutexes and rw_locks use Windows interlocked functions
InnoDB: Uses event mutexes
InnoDB: Compressed tables use zlib 1.2.11
InnoDB: Number of pools: 1
InnoDB: Using SSE2 crc32 instructions
InnoDB: Initializing buffer pool, total size = 16M, instances = 1, chunk size = 16M
InnoDB: Completed initialization of buffer pool
InnoDB: Starting crash recovery from checkpoint LSN=1352041099
InnoDB: 128 out of 128 rollback segments are active.
InnoDB: Removed temporary tablespace data file: "ibtmp1"
InnoDB: Creating shared tablespace for temporary tables
InnoDB: Setting file 'DRIVE:xamppmysqldataibtmp1' size to 12 MB. Physically writing the file full; Please wait ...
InnoDB: File 'DRIVE:xamppmysqldataibtmp1' size is now 12 MB.
InnoDB: Waiting for purge to start
InnoDB: 10.4.10 started; log sequence number 1352041108; transaction id 134006
Plugin 'FEEDBACK' is disabled.
InnoDB: Loading buffer pool(s) from DRIVE:xamppmysqldataib_buffer_pool
InnoDB: Buffer pool(s) load completed at 200722 10:18:53
Server socket created on IP: '::'.

MySQL Logs: After fixing the issue (2020-07-22 15:34:45)

InnoDB: Mutexes and rw_locks use Windows interlocked functions
InnoDB: Uses event mutexes
InnoDB: Compressed tables use zlib 1.2.11
InnoDB: Number of pools: 1
InnoDB: Using SSE2 crc32 instructions
InnoDB: Initializing buffer pool, total size = 16M, instances = 1, chunk size = 16M
InnoDB: Completed initialization of buffer pool
InnoDB: Starting crash recovery from checkpoint LSN=300638
InnoDB: 128 out of 128 rollback segments are active.
InnoDB: Removed temporary tablespace data file: "ibtmp1"
InnoDB: Creating shared tablespace for temporary tables
InnoDB: Setting file 'DRIVE:xamppmysqldataibtmp1' size to 12 MB. Physically writing the file full; Please wait ...
InnoDB: File 'DRIVE:xamppmysqldataibtmp1' size is now 12 MB.
InnoDB: Waiting for purge to start
InnoDB: 10.4.10 started; log sequence number 300647; transaction id 195  
InnoDB: Loading buffer pool(s) from DRIVE:xamppmysqldataib_buffer_pool
Plugin 'FEEDBACK' is disabled.
Server socket created on IP: '::'.
InnoDB: Buffer pool(s) load completed at 200722 15:34:46

MySQL Logs: First log about 8 months before. (2019-12-05 22:27:34)

InnoDB: Mutexes and rw_locks use Windows interlocked functions
InnoDB: Uses event mutexes
InnoDB: Compressed tables use zlib 1.2.11
InnoDB: Number of pools: 1
InnoDB: Using SSE2 crc32 instructions
InnoDB: Initializing buffer pool, total size = 16M, instances = 1, chunk size = 16M
InnoDB: Completed initialization of buffer pool
InnoDB: Starting crash recovery from checkpoint LSN=300288
InnoDB: 128 out of 128 rollback segments are active.
InnoDB: Removed temporary tablespace data file: "ibtmp1"
InnoDB: Creating shared tablespace for temporary tables
InnoDB: Setting file 'DRIVE:xamppmysqldataibtmp1' size to 12 MB. Physically writing the file full; Please wait ...
InnoDB: File 'DRIVE:xamppmysqldataibtmp1' size is now 12 MB.
InnoDB: Waiting for purge to start
InnoDB: 10.4.10 started; log sequence number 300297; transaction id 171
InnoDB: Loading buffer pool(s) from DRIVE:xamppmysqldataib_buffer_pool
Plugin 'FEEDBACK' is disabled.
Server socket created on IP: '::'.
InnoDB: Buffer pool(s) load completed at 191205 22:27:34

Note: Here DRIVE means computer partition, i.e. C drive or D drive.

Answered by neonX on November 21, 2021

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