COLUMN_COMPRESSION_THRESHOLD |
100 |
100 |
COMPILE-TIME |
100 |
SESSION |
INT UNSIGNED |
Minimum column data length eligible for compressio... |
0 |
4294967295 |
1 |
NULL
|
NO |
REQUIRED |
PERFORMANCE_SCHEMA |
NULL
|
OFF |
COMPILE-TIME |
OFF |
GLOBAL |
BOOLEAN |
Enable the performance schema. |
NULL
|
NULL
|
NULL
|
OFF,ON |
YES |
OPTIONAL |
SQL_MODE |
STRICT_TRANS_TABLES,ERROR_FOR_DIVISION_BY_ZERO,NO_... |
STRICT_TRANS_TABLES,ERROR_FOR_DIVISION_BY_ZERO,NO_... |
COMPILE-TIME |
STRICT_TRANS_TABLES,ERROR_FOR_DIVISION_BY_ZERO,NO_... |
SESSION |
SET |
Sets the sql mode |
NULL
|
NULL
|
NULL
|
REAL_AS_FLOAT,PIPES_AS_CONCAT,ANSI_QUOTES,IGNORE_S... |
NO |
REQUIRED |
PERFORMANCE_SCHEMA_EVENTS_WAITS_HISTORY_LONG_SIZE |
NULL
|
-1 |
COMPILE-TIME |
-1 |
GLOBAL |
BIGINT |
Number of rows in EVENTS_WAITS_HISTORY_LONG. Use 0... |
-1 |
1048576 |
1 |
NULL
|
YES |
REQUIRED |
ARIA_PAGECACHE_DIVISION_LIMIT |
NULL
|
100 |
COMPILE-TIME |
100 |
GLOBAL |
BIGINT UNSIGNED |
The minimum percentage of warm blocks in key cache |
1 |
100 |
1 |
NULL
|
NO |
REQUIRED |
PERFORMANCE_SCHEMA_MAX_COND_CLASSES |
NULL
|
80 |
COMPILE-TIME |
80 |
GLOBAL |
BIGINT UNSIGNED |
Maximum number of condition instruments. |
0 |
256 |
1 |
NULL
|
YES |
REQUIRED |
BINLOG_CACHE_SIZE |
NULL
|
32768 |
COMPILE-TIME |
32768 |
GLOBAL |
BIGINT UNSIGNED |
The size of the transactional cache for updates to... |
4096 |
18446744073709551615 |
4096 |
NULL
|
NO |
REQUIRED |
PERFORMANCE_SCHEMA_MAX_COND_INSTANCES |
NULL
|
-1 |
COMPILE-TIME |
-1 |
GLOBAL |
BIGINT |
Maximum number of instrumented condition objects. ... |
-1 |
1048576 |
1 |
NULL
|
YES |
REQUIRED |
INNODB_DEFRAGMENT |
NULL
|
OFF |
COMPILE-TIME |
OFF |
GLOBAL |
BOOLEAN |
Enable/disable InnoDB defragmentation (default FAL... |
NULL
|
NULL
|
NULL
|
OFF,ON |
NO |
REQUIRED |
PERFORMANCE_SCHEMA_MAX_RWLOCK_CLASSES |
NULL
|
40 |
COMPILE-TIME |
40 |
GLOBAL |
BIGINT UNSIGNED |
Maximum number of rwlock instruments. |
0 |
256 |
1 |
NULL
|
YES |
REQUIRED |
INNODB_FLUSH_LOG_AT_TIMEOUT |
NULL
|
1 |
COMPILE-TIME |
1 |
GLOBAL |
INT UNSIGNED |
Write and flush logs every (n) second. |
0 |
2700 |
0 |
NULL
|
NO |
OPTIONAL |
MAX_SORT_LENGTH |
1024 |
1024 |
COMPILE-TIME |
1024 |
SESSION |
BIGINT UNSIGNED |
The number of bytes to use when sorting BLOB or TE... |
4 |
8388608 |
1 |
NULL
|
NO |
REQUIRED |
INNODB_ENCRYPT_TEMPORARY_TABLES |
NULL
|
OFF |
COMPILE-TIME |
OFF |
GLOBAL |
BOOLEAN |
Enrypt the temporary table data. |
NULL
|
NULL
|
NULL
|
OFF,ON |
YES |
OPTIONAL |
COLUMN_COMPRESSION_ZLIB_LEVEL |
6 |
6 |
COMPILE-TIME |
6 |
SESSION |
INT UNSIGNED |
zlib compression level (1 gives best speed, 9 give... |
0 |
9 |
1 |
NULL
|
NO |
REQUIRED |
PERFORMANCE_SCHEMA_HOSTS_SIZE |
NULL
|
-1 |
COMPILE-TIME |
-1 |
GLOBAL |
BIGINT |
Maximum number of instrumented hosts. Use 0 to dis... |
-1 |
1048576 |
1 |
NULL
|
YES |
REQUIRED |
PERFORMANCE_SCHEMA_MAX_MUTEX_INSTANCES |
NULL
|
-1 |
COMPILE-TIME |
-1 |
GLOBAL |
BIGINT |
Maximum number of instrumented MUTEX objects. Use ... |
-1 |
104857600 |
1 |
NULL
|
YES |
REQUIRED |
MAX_INSERT_DELAYED_THREADS |
20 |
20 |
COMPILE-TIME |
20 |
SESSION |
BIGINT UNSIGNED |
Don't start more than this number of threads to ha... |
0 |
16384 |
1 |
NULL
|
NO |
NULL
|
PERFORMANCE_SCHEMA_MAX_RWLOCK_INSTANCES |
NULL
|
-1 |
COMPILE-TIME |
-1 |
GLOBAL |
BIGINT |
Maximum number of instrumented RWLOCK objects. Use... |
-1 |
104857600 |
1 |
NULL
|
YES |
REQUIRED |
WSREP_TRX_FRAGMENT_UNIT |
bytes |
bytes |
COMPILE-TIME |
bytes |
SESSION |
ENUM |
Unit for streaming replication transaction fragmen... |
NULL
|
NULL
|
NULL
|
bytes,rows,statements |
NO |
REQUIRED |
PERFORMANCE_SCHEMA_MAX_MUTEX_CLASSES |
NULL
|
200 |
COMPILE-TIME |
200 |
GLOBAL |
BIGINT UNSIGNED |
Maximum number of mutex instruments. |
0 |
256 |
1 |
NULL
|
YES |
REQUIRED |
INNODB_STATS_TRANSIENT_SAMPLE_PAGES |
NULL
|
8 |
COMPILE-TIME |
8 |
GLOBAL |
BIGINT UNSIGNED |
The number of leaf index pages to sample when calc... |
1 |
18446744073709551615 |
0 |
NULL
|
NO |
REQUIRED |
NET_WRITE_TIMEOUT |
60 |
60 |
COMPILE-TIME |
60 |
SESSION |
BIGINT UNSIGNED |
Number of seconds to wait for a block to be writte... |
1 |
31536000 |
1 |
NULL
|
NO |
REQUIRED |
SLOW_LAUNCH_TIME |
NULL
|
2 |
COMPILE-TIME |
2 |
GLOBAL |
BIGINT UNSIGNED |
If creating the thread takes longer than this valu... |
0 |
31536000 |
1 |
NULL
|
NO |
REQUIRED |
PERFORMANCE_SCHEMA_ACCOUNTS_SIZE |
NULL
|
-1 |
COMPILE-TIME |
-1 |
GLOBAL |
BIGINT |
Maximum number of instrumented user@host accounts.... |
-1 |
1048576 |
1 |
NULL
|
YES |
REQUIRED |
HAVE_RTREE_KEYS |
NULL
|
YES |
COMPILE-TIME |
NULL
|
GLOBAL |
VARCHAR |
If RTREE indexes (used for spatial indexes) are av... |
NULL
|
NULL
|
NULL
|
NULL
|
YES |
NULL
|