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Parameter Templates and Settings

Last updated: 2024-01-11 15:28:38

    Parameter Template Overview

    You can use parameters in a parameter template to manage configuration of a database engine. A database parameter set is just like a container of engine configuration values which can be applied to one or more database instances.
    If you have already created a database parameter template and want to include most of its custom parameters and values in the new template, simply copy the parameter template.
    If you want to use your own database parameter template, you only need to create it, modify the desired parameters, and configure your database instance to use it. It should be noted that all database instances that have applied a parameter template will not get all parameter updates of the template. If you want to apply new parameters to a batch of database instances, you can apply them by importing a template during batch parameter settings.

    Managing Parameter Templates

    A parameter template supports the following features, you can log in to the MariaDB Console and click an instance ID to enter its management page and configure the template features:
    Specify the default parameter template.
    Create templates by modifying the default parameters to generate custom parameter optimization schemes.
    Generate templates by importing parameters from configuration file my.conf.
    Save parameter settings as templates.
    Import parameters from templates when setting parameters for one or multiple instances.

    Parameter Description

    Parameters are initialized by default when an instance is created.
    You can modify instance parameters through entries such as parameter template and parameter configuration.
    Parameters of different instances are isolated from and will not affect one another.
    To avoid faulty operations, only common parameters can be set. If you need other parameters, please submit a ticket for application and specify the "instance ID and parameter names to be added".
    Parameter Name
    Restart Required (0: No; 1: Yes)
    Default Value
    Current Value (Configurable)
    Valid Values
    auto_increment_increment
    0
    1
    1
    [1-65535]
    auto_increment_offset
    0
    1
    1
    [1-65535]
    autocommit
    0
    ON
    ON
    [ON, OFF]
    character_set_server
    0
    utf8
    utf8
    [utf8, latin1, gbk, utf8mb4]
    connect_timeout
    0
    10
    10
    [1-3600]
    default_week_format
    0
    0
    0
    [0-7]
    delay_key_write
    0
    ON
    ON
    [ON, OFF, ALL]
    delayed_insert_limit
    0
    100
    100
    [1-4294967295]
    delayed_insert_timeout
    0
    300
    300
    [1-3600]
    delayed_queue_size
    0
    1000
    1000
    [1-4294967295]
    div_precision_increment
    0
    4
    4
    [0-30]
    group_concat_max_len
    0
    1024
    1024
    [4-18446744073709547520]
    innodb_concurrency_tickets
    0
    5000
    5000
    [100-10000]
    innodb_large_prefix
    0
    OFF
    OFF
    [OFF, ON]
    innodb_lock_wait_timeout
    0
    50
    50
    [1-1073741824]
    innodb_max_dirty_pages_pct
    0
    10
    70
    [10-90]
    innodb_old_blocks_pct
    0
    37
    37
    [5-95]
    innodb_old_blocks_time
    0
    1000
    1000
    [0-1000]
    innodb_purge_batch_size
    0
    300
    300
    [1-1024]
    innodb_read_ahead_threshold
    0
    56
    56
    [0-64]
    innodb_stats_method
    0
    nulls_equal
    nulls_equal
    [nulls_equal, nulls_unequal, nulls_ignored]
    innodb_stats_on_metadata
    0
    OFF
    OFF
    [ON, OFF]
    innodb_stats_sample_pages
    0
    8
    8
    [1-4294967296]
    innodb_strict_mode
    0
    OFF
    OFF
    [ON, OFF]
    innodb_table_locks
    0
    ON
    ON
    [ON, OFF]
    innodb_thread_concurrency
    0
    0
    0
    [0-128]
    innodb_thread_sleep_delay
    0
    10000
    10000
    [1-3600000]
    interactive_timeout
    0
    28800
    28800
    [10-86400]
    key_cache_age_threshold
    0
    300
    300
    [100-4294967295]
    key_cache_block_size
    0
    1024
    1024
    [512-16384]
    key_cache_division_limit
    0
    100
    100
    [1-100]
    lock_wait_timeout
    0
    5
    5
    [1-31536000]
    log_queries_not_using_indexes
    0
    OFF
    OFF
    [ON, OFF]
    long_query_time
    0
    1.000000
    1.000000
    [0.5-10]
    low_priority_updates
    0
    OFF
    OFF
    [OFF, ON]
    max_allowed_packet
    0
    134217728
    1073741824
    [16384-1073741824]
    max_connect_errors
    0
    2000
    2000
    [1-4096]
    max_connections
    0
    4096
    4096
    [1-32768]
    myisam_sort_buffer_size
    0
    4194304
    4194304
    [262144-16777216]
    net_buffer_length
    0
    16384
    16384
    [4096, 8192, 16384, 32768, 65536, 1048576]
    net_read_timeout
    0
    30
    30
    [1-3153600]
    net_retry_count
    0
    10
    10
    [1-4294967295]
    net_write_timeout
    0
    60
    60
    [1-3153600]
    query_alloc_block_size
    0
    8192
    8192
    [1024-16384]
    query_cache_limit
    0
    1048576
    1048576
    [1-1048576]
    query_cache_size
    0
    0
    0
    [0-104857600]
    query_cache_type
    0
    OFF
    OFF
    [OFF, ON, DEMAND]
    query_prealloc_size
    0
    8192
    8192
    [8192-1048576]
    slow_launch_time
    0
    2
    2
    [1-1024]
    sort_buffer_size
    0
    2097152
    2097152
    [32768-1073741824]
    sqlasyn
    0
    ON
    ON
    [ON, OFF]
    sqlasyntimeout
    0
    10
    30
    [10-100]
    table_definition_cache
    0
    400
    400
    [400-2048]
    table_open_cache
    0
    1024
    10240
    [400-524288]
    tmp_table_size
    0
    33554432
    33554432
    [262144-67108864]
    tx_isolation
    0
    REPEATABLE-READ
    REPEATABLE-READ
    [REPEATABLE-READ, SERIALIZABLE, READ-COMMITTED, READ-UNCOMMITTED]
    wait_timeout
    0
    28800
    28800
    [60-259200]

    TencentDB for MariaDB System Variable Description

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