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"sql_throttle_logical_reads", "value": "-1", "data_type": "int", "info": "query may not be allowed to execute if its number of logical reads isnt less than this value.", "flags": "GLOBAL", "publish_version": "", "info_cn": "", "background_cn": "", "ref_url": "" }, "auto_increment_cache_size": { "id": 10047, "name": "auto_increment_cache_size", "value": "1000000", "data_type": "int", "info": "auto_increment service cache size", "flags": "GLOBAL | NEED_SERIALIZE", "min_val": "1", "max_val": "100000000", "publish_version": "", "info_cn": "", "background_cn": "", "ref_url": "" }, "ob_enable_jit": { "id": 10048, "name": "ob_enable_jit", "value": "0", "data_type": "enum", "info": "JIT execution engine mode, default is AUTO", "flags": "GLOBAL | SESSION | NEED_SERIALIZE | INFLUENCE_PLAN", "enum_names": [ "OFF", "AUTO", "FORCE" ], "publish_version": "", "info_cn": "", "background_cn": "", "ref_url": "" }, "ob_temp_tablespace_size_percentage": { "id": 10049, "name": "ob_temp_tablespace_size_percentage", "value": "0", "data_type": "int", "info": "the percentage limitation of some temp tablespace size in tenant disk.", "flags": "GLOBAL | SESSION", "publish_version": "", "info_cn": "", "background_cn": "", "ref_url": "" }, "_optimizer_adaptive_cursor_sharing": { "id": 10050, "name": "_optimizer_adaptive_cursor_sharing", "value": "0", "data_type": "bool", "info": "Enable use of adaptive cursor sharing", "flags": "GLOBAL | SESSION | INVISIBLE | NEED_SERIALIZE", "publish_version": "", "info_cn": "", "background_cn": "", "ref_url": "" }, "ob_timestamp_service": { "id": 10051, "name": "ob_timestamp_service", "value": "1", "data_type": "enum", "info": "the type of timestamp service", "flags": "GLOBAL | NEED_SERIALIZE", "on_check_and_convert_func": "ObSysVarOnCheckFuncs::check_and_convert_timestamp_service", "enum_names": [ "LTS", "GTS", "HA_GTS" ], "publish_version": "", "info_cn": "", "background_cn": "", "ref_url": "" }, "plugin_dir": { "id": 10052, "name": "plugin_dir", "value": "./plugin_dir/", "data_type": "varchar", "info": "the dir to place plugin dll", "flags": "GLOBAL | READONLY", "publish_version": "", "info_cn": "", "background_cn": "", "ref_url": "" }, "undo_retention": { "id": 10053, "name": "undo_retention", "value": "0", "data_type": "int", "info": "specifies (in seconds) the low threshold value of undo retention.", "flags": "GLOBAL", "min_val": "0", "max_val": "4294967295", "publish_version": "", "info_cn": "", "background_cn": "", "ref_url": "" }, "_ob_use_parallel_execution": { "id": 10054, "name": "_ob_use_parallel_execution", "value": "1", "data_type": "bool", "info": "auto use parallel execution", "flags": "NEED_SERIALIZE | GLOBAL | SESSION | INFLUENCE_PLAN | INVISIBLE", "publish_version": "", "info_cn": "", "background_cn": "", "ref_url": "" }, "ob_sql_audit_percentage": { "id": 10055, "name": "ob_sql_audit_percentage", "value": "3", "data_type": "int", "info": "The limited percentage of tenant memory for sql audit", "flags": "GLOBAL | NEED_SERIALIZE", "min_val": "0", "max_val": "100", "publish_version": "", "info_cn": "", "background_cn": "", "ref_url": "" }, "ob_enable_sql_audit": { "id": 10056, "name": "ob_enable_sql_audit", "value": "1", "data_type": "bool", "info": "wether use sql audit in session", "flags": "GLOBAL | NEED_SERIALIZE", "publish_version": "", "info_cn": "", "background_cn": "", "ref_url": "" }, "optimizer_use_sql_plan_baselines": { "id": 10057, "name": "optimizer_use_sql_plan_baselines", "value": "1", "data_type": "bool", "info": "Enable use sql plan baseline", "flags": "GLOBAL | SESSION | NEED_SERIALIZE", "publish_version": "", "info_cn": "", "background_cn": "", "ref_url": "" }, "optimizer_capture_sql_plan_baselines": { "id": 10058, "name": "optimizer_capture_sql_plan_baselines", "value": "1", "data_type": "bool", "info": "optimizer_capture_sql_plan_baselines enables or disables automitic capture plan baseline.", "flags": "GLOBAL | SESSION | NEED_SERIALIZE", "publish_version": "", "info_cn": "", "background_cn": "", "ref_url": "" }, "parallel_max_servers": { "id": 10059, "name": "parallel_max_servers", "value": "0", "data_type": "int", "flags": "GLOBAL | NEED_SERIALIZE", "info": "number of threads created to run parallel statements for each observer.", "min_val": "0", "max_val": "1800", "publish_version": "", "info_cn": "", "background_cn": "", "ref_url": "" }, "parallel_servers_target": { "id": 10060, "name": "parallel_servers_target", "value": "0", "data_type": "int", "flags": "GLOBAL", "info": "number of threads allowed to run parallel statements before statement queuing will be used.", "min_val": "0", "max_val": "9223372036854775807", "publish_version": "", "info_cn": "", "background_cn": "", "ref_url": "" }, "ob_early_lock_release": { "id": 10061, "name": "ob_early_lock_release", "value": "0", "data_type": "bool", "info": "If set true, transaction open the elr optimization.", "flags": "GLOBAL | NEED_SERIALIZE", "publish_version": "", "info_cn": "", "background_cn": "", "ref_url": "" }, "ob_trx_idle_timeout": { "id": 10062, "name": "ob_trx_idle_timeout", "value": "120000000", "data_type": "int", "info": "The stmt interval timeout of transaction(us)", "flags": "GLOBAL | SESSION | NEED_SERIALIZE", "publish_version": "", "info_cn": "", "background_cn": "", "ref_url": "" }, "block_encryption_mode": { "id": 10063, "name": "block_encryption_mode", "value": "0", "data_type": "enum", "info": "specifies the encryption algorithm used in the functions aes_encrypt and aes_decrypt", "flags": "SESSION | GLOBAL | NEED_SERIALIZE", "enum_names": [ "aes-128-ecb", "aes-192-ecb", "aes-256-ecb", "aes-128-cbc", "aes-192-cbc", "aes-256-cbc", "aes-128-cfb1", "aes-192-cfb1", "aes-256-cfb1", "aes-128-cfb8", "aes-192-cfb8", "aes-256-cfb8", "aes-128-cfb128", "aes-192-cfb128", "aes-256-cfb128", "aes-128-ofb", "aes-192-ofb", "aes-256-ofb" ], "publish_version": "", "info_cn": "", "background_cn": "", "ref_url": "" }, "nls_date_format": { "id": 10064, "name": "nls_date_format", "value": "DD-MON-RR", "data_type": "varchar", "info": "specifies the default date format to use with the TO_CHAR and TO_DATE functions, (YYYY-MM-DD HH24:MI:SS) is Common value", "flags": "SESSION | GLOBAL | NEED_SERIALIZE | ORACLE_ONLY", "publish_version": "", "info_cn": "", "background_cn": "", "ref_url": "" }, "nls_timestamp_format": { "id": 10065, "name": "nls_timestamp_format", "value": "DD-MON-RR HH.MI.SSXFF AM", "data_type": "varchar", "info": "specifies the default date format to use with the TO_CHAR and TO_TIMESTAMP functions, (YYYY-MM-DD HH24:MI:SS.FF) is Common value", "flags": "SESSION | GLOBAL | NEED_SERIALIZE | ORACLE_ONLY", "publish_version": "", "info_cn": "", "background_cn": "", "ref_url": "" }, "nls_timestamp_tz_format": { "id": 10066, "name": "nls_timestamp_tz_format", "value": "DD-MON-RR HH.MI.SSXFF AM TZR", "data_type": "varchar", "info": "specifies the default timestamp with time zone format to use with the TO_CHAR and TO_TIMESTAMP_TZ functions, (YYYY-MM-DD HH24:MI:SS.FF TZR TZD) is common value", "flags": "SESSION | GLOBAL | NEED_SERIALIZE | ORACLE_ONLY", "publish_version": "", "info_cn": "", "background_cn": "", "ref_url": "" }, "ob_reserved_meta_memory_percentage": { "id": 10067, "name": "ob_reserved_meta_memory_percentage", "value": "10", "data_type": "int", "info": "percentage of tenant memory resources that can be used by tenant meta data", "flags": "GLOBAL | NEED_SERIALIZE", "min_val": "1", "max_val": "100", "publish_version": "", "info_cn": "", "background_cn": "", "ref_url": "" }, "ob_check_sys_variable": { "id": 10068, "name": "ob_check_sys_variable", "value": "1", "data_type": "bool", "info": "If set true, sql will update sys variable while schema version changed.", "flags": "GLOBAL | SESSION | NEED_SERIALIZE", "publish_version": "", "info_cn": "", "background_cn": "", "ref_url": "" }, "nls_language": { "id": 10069, "name": "nls_language", "value": "AMERICAN", "data_type": "varchar", "info": "specifies the default language of the database, used for messages, day and month names, the default sorting mechanism, the default values of NLS_DATE_LANGUAGE and NLS_SORT.", "flags": "SESSION | NEED_SERIALIZE | ORACLE_ONLY", "publish_version": "", "info_cn": "", "background_cn": "", "ref_url": "" }, "nls_territory": { "id": 10070, "name": "nls_territory", "value": "AMERICA", "data_type": "varchar", "info": "specifies the name of the territory whose conventions are to be followed for day and week numbering, establishes the default date format, the default decimal character and group separator, and the default ISO and local currency symbols.", "flags": "SESSION | GLOBAL| NEED_SERIALIZE | ORACLE_ONLY", "publish_version": "", "info_cn": "", "background_cn": "", "ref_url": "" }, "nls_sort": { "id": 10071, "name": "nls_sort", "value": "BINARY", "data_type": "varchar", "info": "specifies the collating sequence for character value comparison in various SQL operators and clauses.", "flags": "SESSION | GLOBAL| NEED_SERIALIZE | ORACLE_ONLY | INFLUENCE_PLAN", "publish_version": "", "info_cn": "", "background_cn": "", "ref_url": "" }, "nls_comp": { "id": 10072, "name": "nls_comp", "value": "BINARY", "data_type": "varchar", "info": "specifies the collation behavior of the database session. value can be BINARY | LINGUISTIC | ANSI", "flags": "SESSION | GLOBAL| NEED_SERIALIZE | ORACLE_ONLY | INFLUENCE_PLAN", "publish_version": "", "info_cn": "", "background_cn": "", "ref_url": "" }, "nls_characterset": { "id": 10073, "name": "nls_characterset", "value": "AL32UTF8", "data_type": "varchar", "info": "specifies the default characterset of the database, This parameter defines the encoding of the data in the CHAR, VARCHAR2, LONG and CLOB columns of a table.", "flags": "GLOBAL | NEED_SERIALIZE | ORACLE_ONLY | INFLUENCE_PLAN | WITH_CREATE | READONLY", "publish_version": "", "info_cn": "", "background_cn": "", "ref_url": "" }, "nls_nchar_characterset": { "id": 10074, "name": "nls_nchar_characterset", "value": "AL32UTF8", "data_type": "varchar", "info": "specifies the default characterset of the database, This parameter defines the encoding of the data in the NCHAR, NVARCHAR2 and NCLOB columns of a table.", "flags": "GLOBAL | NEED_SERIALIZE | ORACLE_ONLY | INFLUENCE_PLAN", "publish_version": "", "info_cn": "", "background_cn": "", "ref_url": "" }, "nls_date_language": { "id": 10075, "name": "nls_date_language", "value": "AMERICAN", "data_type": "varchar", "info": "specifies the language to use for the spelling of day and month names and date abbreviations (a.m., p.m., AD, BC) returned by the TO_DATE and TO_CHAR functions.", "flags": "SESSION | GLOBAL| NEED_SERIALIZE | ORACLE_ONLY", "publish_version": "", "info_cn": "", "background_cn": "", "ref_url": "" }, "nls_length_semantics": { "id": 10076, "name": "nls_length_semantics", "value": "BYTE", "data_type": "varchar", "info": "specifies the default length semantics to use for VARCHAR2 and CHAR table columns, user-defined object attributes, and PL/SQL variables in database objects created in the session. SYS user use BYTE intead of NLS_LENGTH_SEMANTICS.", "flags": "SESSION | GLOBAL | NEED_SERIALIZE | ORACLE_ONLY | INFLUENCE_PLAN", "publish_version": "", "info_cn": "", "background_cn": "", "ref_url": "" }, "nls_nchar_conv_excp": { "id": 10077, "name": "nls_nchar_conv_excp", "value": "FALSE", "data_type": "varchar", "info": "determines whether an error is reported when there is data loss during an implicit or explicit character type conversion between NCHAR/NVARCHAR2 and CHAR/VARCHAR2.", "flags": "SESSION | GLOBAL | NEED_SERIALIZE | ORACLE_ONLY | INFLUENCE_PLAN", "publish_version": "", "info_cn": "", "background_cn": "", "ref_url": "" }, "nls_calendar": { "id": 10078, "name": "nls_calendar", "value": "GREGORIAN", "data_type": "varchar", "info": "specifies which calendar system Oracle uses.", "flags": "SESSION | GLOBAL | NEED_SERIALIZE | ORACLE_ONLY", "publish_version": "", "info_cn": "", "background_cn": "", "ref_url": "" }, "nls_numeric_characters": { "id": 10079, "name": "nls_numeric_characters", "value": ".,", "data_type": "varchar", "info": "specifies the characters to use as the decimal character and group separator, overrides those characters defined implicitly by NLS_TERRITORY.", "flags": "SESSION | GLOBAL | NEED_SERIALIZE | ORACLE_ONLY", "publish_version": "", "info_cn": "", "background_cn": "", "ref_url": "" }, "_nlj_batching_enabled": { "id": 10080, "name": "_nlj_batching_enabled", "value": "1", "data_type": "bool", "info": "enable batching of the RHS IO in NLJ", "flags": "GLOBAL | SESSION | NEED_SERIALIZE | INVISIBLE | INFLUENCE_PLAN", "publish_version": "", "info_cn": "", "background_cn": "", "ref_url": "" }, "tracefile_identifier": { "id": 10081, "name": "tracefile_identifier", "value": "", "data_type": "varchar", "info": "The name of tracefile.", "flags": "SESSION | NEED_SERIALIZE", "publish_version": "", "info_cn": "", "background_cn": "", "ref_url": "" }, "_groupby_nopushdown_cut_ratio": { "id": 10082, "name": "_groupby_nopushdown_cut_ratio", "value": "3", "data_type": "uint", "info": "ratio used to decide whether push down should be done in distribtued query optimization.", "flags": "GLOBAL | SESSION | INVISIBLE | NEED_SERIALIZE", "publish_version": "", "info_cn": "", "background_cn": "", "ref_url": "" }, "_px_broadcast_fudge_factor": { "id": 10083, "name": "_px_broadcast_fudge_factor", "value": "100", "data_type": "int", "info": "set the tq broadcasting fudge factor percentage.", "flags": "SESSION | INVISIBLE | INFLUENCE_PLAN", "min_val": "0", "max_val": "100", "publish_version": "", "info_cn": "", "background_cn": "", "ref_url": "" }, "_primary_zone_entity_count": { "id": 10084, "name": "_primary_zone_entity_count", "value": "-1", "data_type": "int", "info": "statistic primary zone entity(table/tablegroup/database) count under tenant.", "flags": "GLOBAL | READONLY | INVISIBLE", "publish_version": "", "info_cn": "", "background_cn": "", "ref_url": "" }, "transaction_isolation": { "id": 10085, "name": "transaction_isolation", "value": "READ-COMMITTED", "data_type": "varchar", "on_update_func": "ObSysVarOnUpdateFuncs::update_tx_isolation", "session_special_update_func": "ObSysVarSessionSpecialUpdateFuncs::update_tx_isolation", "on_check_and_convert_func": "ObSysVarOnCheckFuncs::check_and_convert_tx_isolation", "info": "Transaction Isolcation Levels: READ-UNCOMMITTED READ-COMMITTED REPEATABLE-READ SERIALIZABLE", "flags": "GLOBAL | SESSION | NEED_SERIALIZE", "base_class": "ObSessionSpecialVarcharSysVar", "publish_version": "", "info_cn": "", "background_cn": "", "ref_url": "" }, "ob_trx_lock_timeout": { "id": 10086, "name": "ob_trx_lock_timeout", "value": "-1", "data_type": "int", "info": "the max duration of waiting on row lock of one transaction", "flags": "GLOBAL | SESSION | NEED_SERIALIZE", "publish_version": "", "info_cn": "", "background_cn": "", "ref_url": "" }, "validate_password_check_user_name": { "id": 10087, "name": "validate_password_check_user_name", "value": "0", "data_type": "enum", "info": "", "flags": "GLOBAL | NEED_SERIALIZE", "enum_names": [ "on", "off" ], "publish_version": "", "info_cn": "", "background_cn": "", "ref_url": "" }, "validate_password_length": { "id": 10088, "name": "validate_password_length", "value": "0", "data_type": "uint", "info": "", "flags": "GLOBAL | NEED_SERIALIZE", "min_val": "0", "max_val": "2147483647", "publish_version": "", "info_cn": "", "background_cn": "", "ref_url": "" }, "validate_password_mixed_case_count": { "id": 10089, "name": "validate_password_mixed_case_count", "value": "0", "data_type": "uint", "info": "", "flags": "GLOBAL | NEED_SERIALIZE", "min_val": "0", "max_val": "2147483647", "publish_version": "", "info_cn": "", "background_cn": "", "ref_url": "" }, "validate_password_number_count": { "id": 10090, "name": "validate_password_number_count", "value": "0", "data_type": "uint", "info": "", "flags": "GLOBAL | NEED_SERIALIZE", "min_val": "0", "max_val": "2147483647", "publish_version": "", "info_cn": "", "background_cn": "", "ref_url": "" }, "validate_password_policy": { "id": 10091, "name": "validate_password_policy", "value": "0", "data_type": "enum", "info": "", "flags": "GLOBAL | NEED_SERIALIZE", "enum_names": [ "low", "medium" ], "publish_version": "", "info_cn": "", "background_cn": "", "ref_url": "" }, "validate_password_special_char_count": { "id": 10092, "name": "validate_password_special_char_count", "value": "0", "data_type": "uint", "info": "", "flags": "GLOBAL | NEED_SERIALIZE", "min_val": "0", "max_val": "2147483647", "publish_version": "", "info_cn": "", "background_cn": "", "ref_url": "" }, "default_password_lifetime": { "id": 10093, "name": "default_password_lifetime", "value": "0", "data_type": "uint", "info": "", "flags": "GLOBAL | NEED_SERIALIZE", "min_val": "0", "max_val": "65535", "publish_version": "", "info_cn": "", "background_cn": "", "ref_url": "" }, "ob_trace_info": { "id": 10095, "name": "ob_trace_info", "value": "", "data_type": "varchar", "info": "store trace info", "flags": "SESSION", "publish_version": "", "info_cn": "", "background_cn": "", "ref_url": "" }, "ob_enable_batched_multi_statement": { "id": 10096, "name": "ob_enable_batched_multi_statement", "value": "0", "data_type": "bool", "info": "enable use of batched multi statement", "flags": "GLOBAL | SESSION | NEED_SERIALIZE", "publish_version": "", "info_cn": "", "background_cn": "", "ref_url": "" }, "_px_partition_scan_threshold": { "id": 10097, "name": "_px_partition_scan_threshold", "value": "64", "data_type": "int", "info": "least number of partitions per slave to start partition-based scan", "flags": "SESSION | INVISIBLE | INFLUENCE_PLAN", "min_val": "0", "max_val": "100", "publish_version": "", "info_cn": "", "background_cn": "", "ref_url": "" }, "_ob_px_bcast_optimization": { "id": 10098, "name": "_ob_px_bcast_optimization", "value": "1", "data_type": "enum", "info": "broadcast optimization.", "flags": "GLOBAL | SESSION | INVISIBLE | NEED_SERIALIZE", "enum_names": [ "WORKER", "SERVER" ], "publish_version": "", "info_cn": "", "background_cn": "", "ref_url": "" }, "_ob_px_slave_mapping_threshold": { "id": 10099, "name": "_ob_px_slave_mapping_threshold", "value": "200", "data_type": "int", "info": "percentage threshold to use slave mapping plan", "flags": "SESSION | INVISIBLE | INFLUENCE_PLAN | GLOBAL ", "min_val": "0", "max_val": "1000", "publish_version": "", "info_cn": "", "background_cn": "", "ref_url": "" }, "_enable_parallel_dml": { "id": 10100, "name": "_enable_parallel_dml", "value": "0", "data_type": "bool", "info": "A DML statement can be parallelized only if you have explicitly enabled parallel DML in the session or in the SQL statement.", "flags": "SESSION | NEED_SERIALIZE | INVISIBLE | INFLUENCE_PLAN", "publish_version": "", "info_cn": "", "background_cn": "", "ref_url": "" }, "_px_min_granules_per_slave": { "id": 10101, "name": "_px_min_granules_per_slave", "value": "13", "data_type": "int", "info": "minimum number of rowid range granules to generate per slave.", "flags": "SESSION | INVISIBLE | INFLUENCE_PLAN", "min_val": "0", "max_val": "100", "publish_version": "", "info_cn": "", "background_cn": "", "ref_url": "" }, "secure_file_priv": { "id": 10102, "name": "secure_file_priv", "value": "NULL", "data_type": "varchar", "info": "limit the effect of data import and export operations", "flags": "GLOBAL | INFLUENCE_PLAN | NULL", "publish_version": "226", "info_cn": "限制导入导出功能访问的路径", "background_cn": "导入导出功能未限制文件访问可能存在漏洞", "ref_url": "https://yuque.antfin-inc.com/ob/product_functionality_review/sxwpug" }, "plsql_warnings": { "id": 10103, "name": "plsql_warnings", "value": "ENABLE:ALL", "data_type": "varchar", "info": "enables or disables the reporting of warning messages by the PL/SQL compiler, and specifies which warning messages to show as errors.", "flags": "SESSION | GLOBAL| NEED_SERIALIZE | ORACLE_ONLY", "on_check_and_convert_func": "ObSysVarOnCheckFuncs::check_and_convert_plsql_warnings", "publish_version": "3.1.0", "info_cn": "控制pl/sql编译器的报错行为, 可以指定某类型或某个warning码的状态为:enable, disable, error", "background_cn": "pl/sql编译器的警告信息分成了几个分类, 这个系统参数可以控制这些警告信息的行为", "ref_url": "https://yuque.antfin-inc.com/ob/product_functionality_review/xxibln" }, "_enable_parallel_query": { "id": 10104, "name": "_enable_parallel_query", "value": "1", "data_type": "bool", "info": "A QUERY statement can be parallelized only if you have explicitly enabled parallel QUERY in the session or in the SQL statement.", "flags": "SESSION | NEED_SERIALIZE | INVISIBLE | INFLUENCE_PLAN", "publish_version": "227", "info_cn": "在session上打开parallel query配置项, 查询默认情况下才可以被并行执行(parallel>=2)", "background_cn": "px上控制parallel的方式有很多, session上有对应的parallel的控制开关, 这个开关用于控制session级别的默认并行度是否可以大于等于2", "ref_url": "https://yuque.antfin-inc.com/ob/product_functionality_review/tblezn" }, "_force_parallel_query_dop": { "id": 10105, "name": "_force_parallel_query_dop", "value": "1", "data_type": "uint", "info": "A QUERY statement can be parallelized only if you have explicitly enabled parallel QUERY in the session or in the SQL statement.", "flags": "SESSION | NEED_SERIALIZE | INVISIBLE | INFLUENCE_PLAN", "publish_version": "310", "info_cn": "在session上打开parallel query配置项, 并指定默认并行度", "background_cn": "px上控制parallel的方式有很多, session上有对应的parallel的控制开关, 这个变量用于设置session级别的 query 默认并行度大小", "ref_url": "https://yuque.antfin-inc.com/ob/product_functionality_review/bpv992" }, "_force_parallel_dml_dop": { "id": 10106, "name": "_force_parallel_dml_dop", "value": "1", "data_type": "uint", "info": "A QUERY statement can be parallelized only if you have explicitly enabled parallel QUERY in the session or in the SQL statement.", "flags": "SESSION | NEED_SERIALIZE | INVISIBLE | INFLUENCE_PLAN", "publish_version": "310", "info_cn": "在session上打开parallel dml配置项, 并指定默认并行度.当未通过 hint 指定 dml 并行度时, 会使用本变量值作为默认并行度", "background_cn": "px上控制parallel的方式有很多, session上有对应的parallel的控制开关, 这个变量用于设置session级别的 dml 默认并行度大小", "ref_url": "https://yuque.antfin-inc.com/ob/product_functionality_review/bpv992" }, "ob_pl_block_timeout": { "id": 10107, "name": "ob_pl_block_timeout", "value": "3216672000000000", "data_type": "int", "min_val": "0", "max_val": "9223372036854775807", "info": "PL/SQL timeout in microsecond(us)", "flags": "GLOBAL | SESSION | NEED_SERIALIZE", "on_check_and_convert_func": "ObSysVarOnCheckFuncs::check_and_convert_timeout_too_large", "publish_version": "227", "info_cn": "", "background_cn": "", "ref_url": "https://yuque.antfin-inc.com/ob/product_functionality_review/gry0a1" }, "transaction_read_only": { "id": 10108, "name": "transaction_read_only", "value": "0", "data_type": "bool", "on_update_func": "ObSysVarOnUpdateFuncs::update_tx_read_only_no_scope", "session_special_update_func": "ObSysVarSessionSpecialUpdateFuncs::update_tx_read_only", "on_check_and_convert_func": "ObSysVarOnCheckFuncs::check_and_convert_tx_read_only", "info": "Transaction access mode", "flags": "GLOBAL | SESSION | NEED_SERIALIZE", "base_class": "ObSessionSpecialBoolSysVar", "publish_version": "320", "info_cn": "控制是否只允许开启只读事务", "background_cn": "用户可以通过这两个变量访问或者设置事务的访问模式, 当transaction_read_only设置为true时, 不允许执行dml语句", "ref_url": "https://yuque.antfin-inc.com/ob/product_functionality_review/qcneoc" }, "resource_manager_plan": { "id": 10109, "name": "resource_manager_plan", "value": "", "data_type": "varchar", "info": "specifies tenant resource plan.", "flags": "GLOBAL", "publish_version": "320", "info_cn": "指定租户的资源隔离计划", "background_cn": "租户内的普通线程和并行执行线程会相互抢占CPU资源, 通过给租户指定资源隔离计划, 可以控制资源抢占策略, 隔离资源使用量", "ref_url": "https://yuque.antfin-inc.com/ob/product_functionality_review/do11tp" }, "performance_schema": { "id": 10110, "name": "performance_schema", "value": "0", "data_type": "bool", "info": "indicate whether the Performance Schema is enabled", "flags": "GLOBAL", "publish_version": "227", "info_cn": "向客户端声明是否支持 performance 信息查询", "background_cn": "纯兼容性变量.不支持 performance_schema 系统变量, 导致 8.0 JDBC 驱动在连接认证后初始化系统变量阶段执行 select @performance_schema 抛出异常", "ref_url": "https://yuque.antfin-inc.com/ob/product_functionality_review/mg0sbv" }, "nls_currency": { "id": 10111, "name": "nls_currency", "value": "$", "data_type": "varchar", "info": "specifies the string to use as the local currency symbol for the L number format element. The default value of this parameter is determined by NLS_TERRITORY.", "flags": "SESSION | GLOBAL | NEED_SERIALIZE | ORACLE_ONLY", "publish_version": "320", "info_cn": "L数字格式元素的本地货币符号", "background_cn": "兼容 oracle number format model L 数字格式元素", "ref_url": "https://yuque.antfin-inc.com/ob/product_functionality_review/efqk1r" }, "nls_iso_currency": { "id": 10112, "name": "nls_iso_currency", "value": "AMERICA", "data_type": "varchar", "info": "specifies the string to use as the international currency symbol for the C number format element. The default value of this parameter is determined by NLS_TERRITORY", "flags": "SESSION | GLOBAL | NEED_SERIALIZE | ORACLE_ONLY", "publish_version": "320", "info_cn": "C数字格式元素的国际货币符号", "background_cn": "兼容 oracle number format model C 数字格式元素", "ref_url": "https://yuque.antfin-inc.com/ob/product_functionality_review/efqk1r" }, "nls_dual_currency": { "id": 10113, "name": "nls_dual_currency", "value": "$", "data_type": "varchar", "info": "specifies the dual currency symbol for the territory. The default is the dual currency symbol defined in the territory of your current language environment.", "flags": "SESSION | GLOBAL | NEED_SERIALIZE | ORACLE_ONLY", "publish_version": "320", "info_cn": "U数字格式元素的双货币符号", "background_cn": "兼容 oracle number format model U 数字格式元素", "ref_url": "https://yuque.antfin-inc.com/ob/product_functionality_review/efqk1r" } }