Domain name for API request: mariadb.tencentcloudapi.com.
This API is used to get the current parameter settings of a database.
A maximum of 20 requests can be initiated per second for this API.
The following request parameter list only provides API request parameters and some common parameters. For the complete common parameter list, see Common Request Parameters.
This document describes the parameters for Signature V1. It's recommended to use the V3 signature, which provides higher security. Note that for Signature V3, the common parameters need to be placed in the HTTP Header. See details.
Parameter Name | Required | Type | Description |
---|---|---|---|
Action | Yes | String | Common parameter. The value used for this API: DescribeDBParameters. |
Version | Yes | String | Common parameter. The value used for this API: 2017-03-12. |
Region | Yes | String | Common parameter. For more information, please see the list of regions supported by the product. |
InstanceId | Yes | String | Instance ID in the format of tdsql-ow728lmc . |
Parameter Name | Type | Description |
---|---|---|
InstanceId | String | Instance ID in the format of tdsql-ow728lmc . |
Params | Array of ParamDesc | Requests the current parameter values of database |
RequestId | String | The unique request ID, which is returned for each request. RequestId is required for locating a problem. |
https://mariadb.tencentcloudapi.com/?Action=DescribeDBParameters
&InstanceId=tdsql-ige1a5k3
&<Common request parameters>
{
"Response": {
"InstanceId": "tdsql-ige1a5k3",
"Params": [
{
"Default": "1",
"SetValue": "",
"Value": "1",
"Param": "auto_increment_increment",
"Constraint": {
"Range": {
"Max": "65535",
"Min": "1"
},
"Type": "section"
}
},
{
"Default": "1",
"SetValue": "",
"Value": "1",
"Param": "auto_increment_offset",
"Constraint": {
"Range": {
"Max": "65535",
"Min": "1"
},
"Type": "section"
}
},
{
"Default": "ON",
"SetValue": "",
"Value": "ON",
"Param": "autocommit",
"Constraint": {
"Enum": "ON,OFF",
"Type": "enum"
}
},
{
"Default": "ROW",
"SetValue": "",
"Value": "ROW",
"Param": "binlog_format",
"Constraint": {
"Enum": "ROW,STATEMENT,MIXED",
"Type": "enum"
}
},
{
"Default": "utf8",
"SetValue": "",
"Value": "utf8",
"Param": "character_set_server",
"Constraint": {
"Enum": "utf8,latin1,gbk,utf8mb4",
"Type": "enum"
}
},
{
"Default": "",
"SetValue": "",
"Value": "utf8_general_ci",
"Param": "collation_server",
"Constraint": {
"Enum": "latin1_general_cs,latin1_general_ci,latin1_bin,latin1_swedish_ci,gbk_chinese_ci,gbk_bin,utf8_general_ci,utf8_bin,utf8_unicode_ci,utf8mb4_general_ci,utf8mb4_bin,utf8mb4_unicode_ci",
"Type": "enum"
}
},
{
"Default": "10",
"SetValue": "",
"Value": "10",
"Param": "connect_timeout",
"Constraint": {
"Range": {
"Max": "3600",
"Min": "1"
},
"Type": "section"
}
},
{
"Default": "0",
"SetValue": "",
"Value": "0",
"Param": "default_week_format",
"Constraint": {
"Range": {
"Max": "7",
"Min": "0"
},
"Type": "section"
}
},
{
"Default": "ON",
"SetValue": "",
"Value": "ON",
"Param": "delay_key_write",
"Constraint": {
"Enum": "ON,OFF,ALL",
"Type": "enum"
}
},
{
"Default": "100",
"SetValue": "",
"Value": "100",
"Param": "delayed_insert_limit",
"Constraint": {
"Range": {
"Max": "4294967295",
"Min": "1"
},
"Type": "section"
}
},
{
"Default": "300",
"SetValue": "",
"Value": "300",
"Param": "delayed_insert_timeout",
"Constraint": {
"Range": {
"Max": "3600",
"Min": "1"
},
"Type": "section"
}
},
{
"Default": "1000",
"SetValue": "",
"Value": "1000",
"Param": "delayed_queue_size",
"Constraint": {
"Range": {
"Max": "4294967295",
"Min": "1"
},
"Type": "section"
}
},
{
"Default": "4",
"SetValue": "",
"Value": "4",
"Param": "div_precision_increment",
"Constraint": {
"Range": {
"Max": "30",
"Min": "0"
},
"Type": "section"
}
},
{
"Default": "OFF",
"SetValue": "",
"Value": "OFF",
"Param": "event_scheduler",
"Constraint": {
"Enum": "ON,OFF",
"Type": "enum"
}
},
{
"Default": "1024",
"SetValue": "",
"Value": "1024",
"Param": "group_concat_max_len",
"Constraint": {
"Range": {
"Max": "18446744073709547520",
"Min": "4"
},
"Type": "section"
}
},
{
"Default": "5000",
"SetValue": "",
"Value": "5000",
"Param": "innodb_concurrency_tickets",
"Constraint": {
"Range": {
"Max": "10000",
"Min": "100"
},
"Type": "section"
}
},
{
"Default": "OFF",
"SetValue": "",
"Value": "ON",
"Param": "innodb_large_prefix",
"Constraint": {
"Enum": "OFF,ON",
"Type": "enum"
}
},
{
"Default": "50",
"SetValue": "",
"Value": "20",
"Param": "innodb_lock_wait_timeout",
"Constraint": {
"Range": {
"Max": "1073741824",
"Min": "1"
},
"Type": "section"
}
},
{
"Default": "10",
"SetValue": "",
"Value": "70.000000",
"Param": "innodb_max_dirty_pages_pct",
"Constraint": {
"Range": {
"Max": "90",
"Min": "10"
},
"Type": "section"
}
},
{
"Default": "37",
"SetValue": "",
"Value": "37",
"Param": "innodb_old_blocks_pct",
"Constraint": {
"Range": {
"Max": "95",
"Min": "5"
},
"Type": "section"
}
},
{
"Default": "1000",
"SetValue": "",
"Value": "1000",
"Param": "innodb_old_blocks_time",
"Constraint": {
"Range": {
"Max": "1000",
"Min": "0"
},
"Type": "section"
}
},
{
"Default": "4096",
"SetValue": "",
"Value": "16384",
"Param": "innodb_page_size",
"Constraint": {
"Enum": "4096,8192,16384,32768,65536",
"Type": "enum"
}
},
{
"Default": "300",
"SetValue": "",
"Value": "1000",
"Param": "innodb_purge_batch_size",
"Constraint": {
"Range": {
"Max": "1024",
"Min": "1"
},
"Type": "section"
}
},
{
"Default": "56",
"SetValue": "",
"Value": "56",
"Param": "innodb_read_ahead_threshold",
"Constraint": {
"Range": {
"Max": "64",
"Min": "0"
},
"Type": "section"
}
},
{
"Default": "nulls_equal",
"SetValue": "",
"Value": "nulls_equal",
"Param": "innodb_stats_method",
"Constraint": {
"Enum": "nulls_equal,nulls_unequal,nulls_ignored",
"Type": "enum"
}
},
{
"Default": "OFF",
"SetValue": "",
"Value": "OFF",
"Param": "innodb_stats_on_metadata",
"Constraint": {
"Enum": "ON,OFF",
"Type": "enum"
}
},
{
"Default": "8",
"SetValue": "",
"Value": "8",
"Param": "innodb_stats_sample_pages",
"Constraint": {
"Range": {
"Max": "4294967296",
"Min": "1"
},
"Type": "section"
}
},
{
"Default": "OFF",
"SetValue": "",
"Value": "OFF",
"Param": "innodb_strict_mode",
"Constraint": {
"Enum": "ON,OFF",
"Type": "enum"
}
},
{
"Default": "ON",
"SetValue": "",
"Value": "ON",
"Param": "innodb_table_locks",
"Constraint": {
"Enum": "ON,OFF",
"Type": "enum"
}
},
{
"Default": "0",
"SetValue": "",
"Value": "64",
"Param": "innodb_thread_concurrency",
"Constraint": {
"Range": {
"Max": "128",
"Min": "0"
},
"Type": "section"
}
},
{
"Default": "10000",
"SetValue": "",
"Value": "0",
"Param": "innodb_thread_sleep_delay",
"Constraint": {
"Range": {
"Max": "3600000",
"Min": "1"
},
"Type": "section"
}
},
{
"Default": "28800",
"SetValue": "",
"Value": "28800",
"Param": "interactive_timeout",
"Constraint": {
"Range": {
"Max": "86400",
"Min": "10"
},
"Type": "section"
}
},
{
"Default": "262144",
"SetValue": "",
"Value": "2097152",
"Param": "join_buffer_size",
"Constraint": {
"Range": {
"Max": "18446744073709547520",
"Min": "128"
},
"Type": "section"
}
},
{
"Default": "300",
"SetValue": "",
"Value": "300",
"Param": "key_cache_age_threshold",
"Constraint": {
"Range": {
"Max": "4294967295",
"Min": "100"
},
"Type": "section"
}
},
{
"Default": "1024",
"SetValue": "",
"Value": "1024",
"Param": "key_cache_block_size",
"Constraint": {
"Range": {
"Max": "16384",
"Min": "512"
},
"Type": "section"
}
},
{
"Default": "100",
"SetValue": "",
"Value": "100",
"Param": "key_cache_division_limit",
"Constraint": {
"Range": {
"Max": "100",
"Min": "1"
},
"Type": "section"
}
},
{
"Default": "5",
"SetValue": "",
"Value": "5",
"Param": "lock_wait_timeout",
"Constraint": {
"Range": {
"Max": "31536000",
"Min": "1"
},
"Type": "section"
}
},
{
"Default": "OFF",
"SetValue": "",
"Value": "OFF",
"Param": "log_queries_not_using_indexes",
"Constraint": {
"Enum": "ON,OFF",
"Type": "enum"
}
},
{
"Default": "1.000000",
"SetValue": "",
"Value": "1.000000",
"Param": "long_query_time",
"Constraint": {
"Range": {
"Max": "10",
"Min": "0.05"
},
"Type": "section"
}
},
{
"Default": "OFF",
"SetValue": "",
"Value": "OFF",
"Param": "low_priority_updates",
"Constraint": {
"Enum": "OFF,ON",
"Type": "enum"
}
},
{
"Default": "1",
"SetValue": "",
"Value": "0",
"Param": "lower_case_table_names",
"Constraint": {
"Enum": "0,1",
"Type": "enum"
}
},
{
"Default": "134217728",
"SetValue": "",
"Value": "1073741824",
"Param": "max_allowed_packet",
"Constraint": {
"Range": {
"Max": "1073741824",
"Min": "16384"
},
"Type": "section"
}
},
{
"Default": "2000",
"SetValue": "",
"Value": "2000",
"Param": "max_connect_errors",
"Constraint": {
"Range": {
"Max": "4096",
"Min": "1"
},
"Type": "section"
}
},
{
"Default": "4096",
"SetValue": "",
"Value": "10000",
"Param": "max_connections",
"Constraint": {
"Range": {
"Max": "32768",
"Min": "1"
},
"Type": "section"
}
},
{
"Default": "16382",
"SetValue": "",
"Value": "200000",
"Param": "max_prepared_stmt_count",
"Constraint": {
"Range": {
"Max": "1048576",
"Min": "0"
},
"Type": "section"
}
},
{
"Default": "4194304",
"SetValue": "",
"Value": "4194304",
"Param": "myisam_sort_buffer_size",
"Constraint": {
"Range": {
"Max": "16777216",
"Min": "262144"
},
"Type": "section"
}
},
{
"Default": "16384",
"SetValue": "",
"Value": "16384",
"Param": "net_buffer_length",
"Constraint": {
"Enum": "4096,8192,16384,32768,65536,1048576",
"Type": "enum"
}
},
{
"Default": "30",
"SetValue": "",
"Value": "30",
"Param": "net_read_timeout",
"Constraint": {
"Range": {
"Max": "3153600",
"Min": "1"
},
"Type": "section"
}
},
{
"Default": "10",
"SetValue": "",
"Value": "10",
"Param": "net_retry_count",
"Constraint": {
"Range": {
"Max": "4294967295",
"Min": "1"
},
"Type": "section"
}
},
{
"Default": "60",
"SetValue": "",
"Value": "60",
"Param": "net_write_timeout",
"Constraint": {
"Range": {
"Max": "3153600",
"Min": "1"
},
"Type": "section"
}
},
{
"Default": "index_merge=on,index_merge_union=on,index_merge_sort_union=on,index_merge_intersection=on,optimize_join_buffer_size=on",
"SetValue": "",
"Value": "batched_key_access=off,block_nested_loop=on,condition_fanout_filter=on,derived_merge=on,duplicateweedout=on,engine_condition_pushdown=on,firstmatch=on,index_condition_pushdown=on,index_merge=on,index_merge_intersection=on,index_merge_sort_union=on,index_merge_union=on,loosescan=on,materialization=on,mrr=on,mrr_cost_based=on,semijoin=on,subquery_materialization_cost_based=on,use_index_extensions=on",
"Param": "optimizer_switch",
"Constraint": {
"Type": "string"
}
},
{
"Default": "8192",
"SetValue": "",
"Value": "16384",
"Param": "query_alloc_block_size",
"Constraint": {
"Range": {
"Max": "16384",
"Min": "1024"
},
"Type": "section"
}
},
{
"Default": "1048576",
"SetValue": "",
"Value": "1048576",
"Param": "query_cache_limit",
"Constraint": {
"Range": {
"Max": "1048576",
"Min": "1"
},
"Type": "section"
}
},
{
"Default": "0",
"SetValue": "",
"Value": "0",
"Param": "query_cache_size",
"Constraint": {
"Range": {
"Max": "104857600",
"Min": "0"
},
"Type": "section"
}
},
{
"Default": "OFF",
"SetValue": "",
"Value": "OFF",
"Param": "query_cache_type",
"Constraint": {
"Enum": "OFF,ON,DEMAND",
"Type": "enum"
}
},
{
"Default": "8192",
"SetValue": "",
"Value": "24576",
"Param": "query_prealloc_size",
"Constraint": {
"Range": {
"Max": "1048576",
"Min": "8192"
},
"Type": "section"
}
},
{
"Default": "10",
"SetValue": "",
"Value": "",
"Param": "slave_parallel_threads",
"Constraint": {
"Range": {
"Max": "16383",
"Min": "0"
},
"Type": "section"
}
},
{
"Default": "2",
"SetValue": "",
"Value": "2",
"Param": "slow_launch_time",
"Constraint": {
"Range": {
"Max": "1024",
"Min": "1"
},
"Type": "section"
}
},
{
"Default": "2097152",
"SetValue": "",
"Value": "2097152",
"Param": "sort_buffer_size",
"Constraint": {
"Range": {
"Max": "1073741824",
"Min": "32768"
},
"Type": "section"
}
},
{
"Default": "",
"SetValue": "",
"Value": "NO_ENGINE_SUBSTITUTION,STRICT_TRANS_TABLES",
"Param": "sql_mode",
"Constraint": {
"Type": "string"
}
},
{
"Default": "10",
"SetValue": "",
"Value": "30",
"Param": "sqlasyntimeout",
"Constraint": {
"Range": {
"Max": "100",
"Min": "10"
},
"Type": "section"
}
},
{
"Default": "400",
"SetValue": "",
"Value": "400",
"Param": "table_definition_cache",
"Constraint": {
"Range": {
"Max": "2048",
"Min": "400"
},
"Type": "section"
}
},
{
"Default": "1024",
"SetValue": "",
"Value": "10240",
"Param": "table_open_cache",
"Constraint": {
"Range": {
"Max": "524288",
"Min": "400"
},
"Type": "section"
}
},
{
"Default": "3",
"SetValue": "",
"Value": "30",
"Param": "thread_pool_oversubscribe",
"Constraint": {
"Range": {
"Max": "65536",
"Min": "1"
},
"Type": "section"
}
},
{
"Default": "33554432",
"SetValue": "",
"Value": "33554432",
"Param": "tmp_table_size",
"Constraint": {
"Range": {
"Max": "67108864",
"Min": "262144"
},
"Type": "section"
}
},
{
"Default": "REPEATABLE-READ",
"SetValue": "",
"Value": "REPEATABLE-READ",
"Param": "tx_isolation",
"Constraint": {
"Enum": "REPEATABLE-READ,SERIALIZABLE,READ-COMMITTED,READ-UNCOMMITTED",
"Type": "enum"
}
},
{
"Default": "28800",
"SetValue": "",
"Value": "28800",
"Param": "wait_timeout",
"Constraint": {
"Range": {
"Max": "259200",
"Min": "60"
},
"Type": "section"
}
}
],
"RequestId": "914db412-d6e6-47ad-8e62-d06e02e52a56"
}
}
TencentCloud API 3.0 integrates SDKs that support various programming languages to make it easier for you to call APIs.
The following only lists the error codes related to the API business logic. For other error codes, see Common Error Codes.
Error Code | Description |
---|---|
InternalError.CamAuthFailed | CAM authentication request failed. |
InternalError.DbOperationFailed | Failed to query the database. |
InternalError.GetDbConfigFailed | Failed to get database instance parameters. |
InvalidParameter.GenericParameterError | An error occurred while verifying parameter validity. |
ResourceNotFound.NoInstanceFound | The specified database instance was not found. |
ResourceUnavailable.InstanceAlreadyDeleted | The database instance has been deleted. |
ResourceUnavailable.InstanceStatusAbnormal | Incorrect database instance status. Operations are not allowed. |
UnauthorizedOperation.PermissionDenied | You have no permission to manipulate this API or resource. |
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