|
| 1 | +--- |
| 2 | +title: "ORACLE" |
| 3 | +weight: 2 |
| 4 | +type: docs |
| 5 | +aliases: |
| 6 | +- /connectors/pipeline-connectors/oracle |
| 7 | +--- |
| 8 | +<!-- |
| 9 | +Licensed to the Apache Software Foundation (ASF) under one |
| 10 | +or more contributor license agreements. See the NOTICE file |
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| 13 | +to you under the Apache License, Version 2.0 (the |
| 14 | +"License"); you may not use this file except in compliance |
| 15 | +with the License. You may obtain a copy of the License at |
| 16 | +
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| 17 | + http://www.apache.org/licenses/LICENSE-2.0 |
| 18 | +
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| 19 | +Unless required by applicable law or agreed to in writing, |
| 20 | +software distributed under the License is distributed on an |
| 21 | +"AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY |
| 22 | +KIND, either express or implied. See the License for the |
| 23 | +specific language governing permissions and limitations |
| 24 | +under the License. |
| 25 | +--> |
| 26 | + |
| 27 | +# Oracle Connector |
| 28 | + |
| 29 | +Oracle CDC Pipeline 连接器允许从 Oracle 数据库读取快照数据和增量数据,并提供端到端的整库数据同步能力。 本文描述了如何设置 Oracle CDC Pipeline 连接器。 |
| 30 | + |
| 31 | + |
| 32 | +## 示例 |
| 33 | + |
| 34 | +从 Oracle 读取数据同步到 Doris 的 Pipeline 可以定义如下: |
| 35 | + |
| 36 | +```yaml |
| 37 | +source: |
| 38 | + type: oracle |
| 39 | + name: Oracle Source |
| 40 | + hostname: 127.0.0.1 |
| 41 | + port: 1521 |
| 42 | + username: debezium |
| 43 | + password: dbz |
| 44 | + database: ORCLDB |
| 45 | + tables: adb.\.*, bdb.user_table_[0-9]+, [app|web].order_\.* |
| 46 | + |
| 47 | +sink: |
| 48 | + type: doris |
| 49 | + name: Doris Sink |
| 50 | + fenodes: 127.0.0.1:8030 |
| 51 | + username: root |
| 52 | + password: pass |
| 53 | + |
| 54 | +pipeline: |
| 55 | + name: Oracle to Doris Pipeline |
| 56 | + parallelism: 4 |
| 57 | +``` |
| 58 | +
|
| 59 | +## 连接器配置项 |
| 60 | +
|
| 61 | +<div class="highlight"> |
| 62 | +<table class="colwidths-auto docutils"> |
| 63 | + <thead> |
| 64 | + <tr> |
| 65 | + <th class="text-left" style="width: 10%">Option</th> |
| 66 | + <th class="text-left" style="width: 8%">Required</th> |
| 67 | + <th class="text-left" style="width: 7%">Default</th> |
| 68 | + <th class="text-left" style="width: 10%">Type</th> |
| 69 | + <th class="text-left" style="width: 65%">Description</th> |
| 70 | + </tr> |
| 71 | + </thead> |
| 72 | + <tbody> |
| 73 | + <tr> |
| 74 | + <td>hostname</td> |
| 75 | + <td>required</td> |
| 76 | + <td style="word-wrap: break-word;">(none)</td> |
| 77 | + <td>String</td> |
| 78 | + <td> Oracle 数据库服务器的 IP 地址或主机名。</td> |
| 79 | + </tr> |
| 80 | + <tr> |
| 81 | + <td>port</td> |
| 82 | + <td>optional</td> |
| 83 | + <td style="word-wrap: break-word;">1521</td> |
| 84 | + <td>Integer</td> |
| 85 | + <td>Oracle 数据库服务器的整数端口号。</td> |
| 86 | + </tr> |
| 87 | + <tr> |
| 88 | + <td>username</td> |
| 89 | + <td>required</td> |
| 90 | + <td style="word-wrap: break-word;">(none)</td> |
| 91 | + <td>String</td> |
| 92 | + <td>连接到 Oracle 数据库服务器时要使用的 Oracle 用户的名称。</td> |
| 93 | + </tr> |
| 94 | + <tr> |
| 95 | + <td>password</td> |
| 96 | + <td>required</td> |
| 97 | + <td style="word-wrap: break-word;">(none)</td> |
| 98 | + <td>String</td> |
| 99 | + <td>连接 Oracle 数据库服务器时使用的密码。</td> |
| 100 | + </tr> |
| 101 | + <tr> |
| 102 | + <td>tables</td> |
| 103 | + <td>required</td> |
| 104 | + <td style="word-wrap: break-word;">(none)</td> |
| 105 | + <td>String</td> |
| 106 | + <td>需要监视的 Oracle 数据库的表名。表名支持正则表达式,以监视满足正则表达式的多个表。<br> |
| 107 | + 需要注意的是,点号(.)被视为数据库和表名的分隔符。 如果需要在正则表达式中使用点(.)来匹配任何字符,必须使用反斜杠对点进行转义。<br> |
| 108 | + 例如,db0.\.*, db1.user_table_[0-9]+, db[1-2].[app|web]order_\.*</td> |
| 109 | + </tr> |
| 110 | + <tr> |
| 111 | + <td>schema-change.enabled</td> |
| 112 | + <td>optional</td> |
| 113 | + <td style="word-wrap: break-word;">true</td> |
| 114 | + <td>Boolean</td> |
| 115 | + <td>是否发送模式更改事件,下游 sink 可以响应模式变更事件实现表结构同步,默认为true。</td> |
| 116 | + </tr> |
| 117 | + <tr> |
| 118 | + <td>scan.incremental.snapshot.chunk.size</td> |
| 119 | + <td>optional</td> |
| 120 | + <td style="word-wrap: break-word;">8096</td> |
| 121 | + <td>Integer</td> |
| 122 | + <td>表快照的块大小(行数),读取表的快照时,捕获的表被拆分为多个块。</td> |
| 123 | + </tr> |
| 124 | + <tr> |
| 125 | + <td>scan.snapshot.fetch.size</td> |
| 126 | + <td>optional</td> |
| 127 | + <td style="word-wrap: break-word;">1024</td> |
| 128 | + <td>Integer</td> |
| 129 | + <td>读取表快照时每次读取数据的最大条数。</td> |
| 130 | + </tr> |
| 131 | + <tr> |
| 132 | + <td>scan.startup.mode</td> |
| 133 | + <td>optional</td> |
| 134 | + <td style="word-wrap: break-word;">initial</td> |
| 135 | + <td>String</td> |
| 136 | + <td> Oracle CDC 消费者可选的启动模式, |
| 137 | + 合法的模式为 "initial","latest-offset"。</td> |
| 138 | + </tr> |
| 139 | + <tr> |
| 140 | + <td>debezium.*</td> |
| 141 | + <td>optional</td> |
| 142 | + <td style="word-wrap: break-word;">(none)</td> |
| 143 | + <td>String</td> |
| 144 | + <td>将 Debezium 的属性传递给 Debezium 嵌入式引擎,该引擎用于从 Oracle 服务器捕获数据更改。 |
| 145 | + 例如: <code>'debezium.snapshot.mode' = 'never'</code>. |
| 146 | + 查看更多关于 <a href="https://debezium.io/documentation/reference/1.9/connectors/oracle.html#oracle-connector-properties"> Debezium 的 Oracle 连接器属性</a></td> |
| 147 | + </tr> |
| 148 | + <tr> |
| 149 | + <td>scan.incremental.close-idle-reader.enabled</td> |
| 150 | + <td>optional</td> |
| 151 | + <td style="word-wrap: break-word;">false</td> |
| 152 | + <td>Boolean</td> |
| 153 | + <td>是否在快照结束后关闭空闲的 Reader。 此特性需要 flink 版本大于等于 1.14 并且 'execution.checkpointing.checkpoints-after-tasks-finish.enabled' 需要设置为 true。<br> |
| 154 | + 若 flink 版本大于等于 1.15,'execution.checkpointing.checkpoints-after-tasks-finish.enabled' 默认值变更为 true,可以不用显式配置 'execution.checkpointing.checkpoints-after-tasks-finish.enabled' = true。</td> |
| 155 | + </tr> |
| 156 | + <tr> |
| 157 | + <td>metadata.list</td> |
| 158 | + <td>optional</td> |
| 159 | + <td style="word-wrap: break-word;">false</td> |
| 160 | + <td>String</td> |
| 161 | + <td> |
| 162 | + 可额外读取的SourceRecord中元数据的列表,后续可直接使用在transform模块,英文逗号 `,` 分割。目前可用值包含:op_ts。 |
| 163 | + </td> |
| 164 | + </tr> |
| 165 | + </tbody> |
| 166 | +</table> |
| 167 | +</div> |
| 168 | + |
| 169 | +## 启动模式 |
| 170 | + |
| 171 | +配置选项`scan.startup.mode`指定 Oracle CDC 使用者的启动模式。有效枚举包括: |
| 172 | +- `initial` (默认):在第一次启动时对受监视的数据库表执行初始快照,并继续读取最新的 binlog。 |
| 173 | +- `latest-offset`:首次启动时,从不对受监视的数据库表执行快照, 连接器仅从 binlog 的结尾处开始读取,这意味着连接器只能读取在连接器启动之后的数据更改。 |
| 174 | + |
| 175 | +例如,可以在 YAML 配置文件中这样指定启动模式: |
| 176 | + |
| 177 | +```yaml |
| 178 | +source: |
| 179 | + type: mysql |
| 180 | + scan.startup.mode: earliest-offset # Start from earliest offset |
| 181 | + scan.startup.mode: latest-offset # Start from latest offset |
| 182 | + # ... |
| 183 | +``` |
| 184 | + |
| 185 | +## 数据类型映射 |
| 186 | + |
| 187 | +<div class="wy-table-responsive"> |
| 188 | +<table class="colwidths-auto docutils"> |
| 189 | + <thead> |
| 190 | + <tr> |
| 191 | + <th class="text-left" style="width:30%;">Oracle type<a href="https://dev.mysql.com/doc/refman/8.0/en/data-types.html"></a></th> |
| 192 | + <th class="text-left" style="width:10%;">CDC type</th> |
| 193 | + <th class="text-left" style="width:60%;">NOTE</th> |
| 194 | + </tr> |
| 195 | + </thead> |
| 196 | + <tbody> |
| 197 | + <tr> |
| 198 | + <td>NUMBER(p,s)</td> |
| 199 | + <td>DECIMAL(p, s)/BIGINT</td> |
| 200 | + <td>当s 大于 0 时,使用 DECIMAL(p, s);否则使用 BIGINT。</td> |
| 201 | + </tr> |
| 202 | + <tr> |
| 203 | + <td> |
| 204 | + LONG<br> |
| 205 | + </td> |
| 206 | + <td>BIGINT</td> |
| 207 | + <td></td> |
| 208 | + </tr> |
| 209 | + <tr> |
| 210 | + <td> |
| 211 | + DATE |
| 212 | + </td> |
| 213 | + <td>TIMESTAMP [(6)]</td> |
| 214 | + <td></td> |
| 215 | + </tr> |
| 216 | + <tr> |
| 217 | + <td> |
| 218 | + FLOAT<br> |
| 219 | + BINARY_FLOAT<br> |
| 220 | + </td> |
| 221 | + <td>FLOAT</td> |
| 222 | + <td></td> |
| 223 | + </tr> |
| 224 | + <tr> |
| 225 | + <td> |
| 226 | + BINARY_DOUBLE<br> |
| 227 | + DOUBLE |
| 228 | + </td> |
| 229 | + <td>DOUBLE</td> |
| 230 | + <td></td> |
| 231 | + </tr> |
| 232 | + <tr> |
| 233 | + <td> |
| 234 | + TIMESTAMP(p) |
| 235 | + </td> |
| 236 | + <td>TIMESTAMP [(p)]</td> |
| 237 | + <td></td> |
| 238 | + </tr> |
| 239 | + <tr> |
| 240 | + <td> |
| 241 | + TIMESTAMP(p) WITH TIME ZONE |
| 242 | + </td> |
| 243 | + <td>TIMESTAMP_TZ [(p)]</td> |
| 244 | + <td></td> |
| 245 | + </tr> |
| 246 | + <tr> |
| 247 | + <td> |
| 248 | + TIMESTAMP(p) WITH LOCAL TIME ZONE |
| 249 | + </td> |
| 250 | + <td>TIMESTAMP_LTZ [(p)]</td> |
| 251 | + <td></td> |
| 252 | + </tr> |
| 253 | + <tr> |
| 254 | + <td> |
| 255 | + INTERVAL YEAR(2) TO MONTH<br> |
| 256 | + INTERVAL DAY(3) TO SECOND(2) |
| 257 | + </td> |
| 258 | + <td>BIGINT</td> |
| 259 | + <td></td> |
| 260 | + </tr> |
| 261 | + <tr> |
| 262 | + <td> |
| 263 | + XMLTYPE |
| 264 | + </td> |
| 265 | + <td>VARCHAR(n)</td> |
| 266 | + <td></td> |
| 267 | + </tr> |
| 268 | + <tr> |
| 269 | + <td> |
| 270 | + VARCHAR(n)<br> |
| 271 | + VARCHAR2(n)<br> |
| 272 | + NVARCHAR2(n)<br> |
| 273 | + NCHAR(n)<br> |
| 274 | + CHAR(n)<br> |
| 275 | + </td> |
| 276 | + <td>VARCHAR(n)</td> |
| 277 | + <td></td> |
| 278 | + </tr> |
| 279 | + <tr> |
| 280 | + <td> |
| 281 | + CLOB<br> |
| 282 | + BLOB<br> |
| 283 | + TEXT<br> |
| 284 | + NCLOB<br> |
| 285 | + SDO_GEOMETRY<br> |
| 286 | + </td> |
| 287 | + <td>STRING</td> |
| 288 | + <td>目前,对于 Oracle 中的 BLOB 数据类型,仅支持长度不大于 2147483647(2**31-1)的 blob。 </td> |
| 289 | + </tr> |
| 290 | + </tbody> |
| 291 | +</table> |
| 292 | +</div> |
| 293 | +{{< top >}} |
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