Gather the most important information about your current database and your environment prior to the migration (some useful scripts and examples are given).
在开始迁移之前，搜集有关当前数据库和环境的最重要信息(给出了一些有用的脚本和示例)。
2
Gather all the database information by running the same commands as in step 2 in the Pre-migration section.
通过运行预迁移一节的步骤2中的相同命令收集所有数据库信息。
3
Using special common offset gather for crosshole seismic, a migration velocity analysis method is developed for crosshole seismic.