OID:行对象标识符(对象ID),KES中系统表/视图默认是有的OID,充当主键。 OID(Object Identifier) 就是KES内部用于标识数据库对象(即通常意义上的数据表,视图,存储过程之类)的一个长度为4字节的标识符。它是KES大部分系统 表的主键,KES中OID在系统表中是可以直接显示出来的,但是普通表默认并没有(非隐藏了),该字...
*/ public boolean isValidOracleIdentifier(String identifier, Class<? extends DatabaseObject> type) { if ((identifier == null) || (identifier.length() < 1)) return false; if (!identifier.matches("^(i?)[A-Z][A-Z0-9\\$\\_\\#]*$")) return false; /* * @todo It seems we ...
Process ID The identifier for the process caused by the query. Runtime Amount of time for which the query has been running (in minutes). User Name Name of the user executing the query. Query The SQL query that was running. Database Name The database name under which the query has been...
当不再需要该描述符时,应当释放它 EXEC SQL DEALLOCATE DESCRIPTOR identifier; 要使用一个描述符区域,把它指定为INTO子句的存储目标 (而不是列出主变量) EXEC SQL FETCH NEXT FROM mycursor INTO SQL DESCRIPTOR mydesc; 如果结果集为空,该描述符区域仍然会包含查询的元数据,即域的名称。 对于还没有执行的预备...
1通过sys_controldata读取控制文件,找到可以清理的wal日志[kingbase@ora19c~]$sys_controldata-Ddatasys_control version number:1201Catalog version number:202208021Database system identifier:7159464663528337316Database cluster state:shutdownsys_control last modified:Tue22Nov2022 05:29:23PMCSTLatest checkpoint ...