blog/article
2
1
Fork 0
Code Pull Requests Activity

update

Browse Source
This commit is contained in:
xking
2025-08-31 16:12:04 +08:00
parent 1b2e54a05d
commit 52dc69a2a5
4 changed files with 171 additions and 0 deletions
Download Patch File Download Diff File Expand all files Collapse all files

0
linux/linux权限标识符
View File

7
linux/linux权限标识符.md Normal file
View File

@@ -0,0 +1,7 @@
| g | r | w | x | |
| ---- | ---- | ---- | ---- | ------ |
| u | 4 | 2 | 1 | 7(rwx) |
| g | 4 | 2 | 1 | 7(rwx) |
| o | 4 | 2 | 1 | 7(rwx) |
| | | | | |

3
oracle/oracle-get_ddl.md Normal file
View File

@@ -0,0 +1,3 @@
```sql
SELECT DBMS_METADATA.GET_DDL('TABLE', 'T_FOC_CREW_MQ_NEW', (SELECT OWNER FROM DBA_OBJECTS WHERE OBJECT_NAME = 'T_FOC_CREW_MQ_NEW' AND OBJECT_TYPE IN ('TABLE', 'SYNONYM')) ) FROM DUAL;
```

161
oracle/oracle-表重定义.md Normal file
View File

@@ -0,0 +1,161 @@
表重定义
```sql
DECLARE
-- 参数定义
l_orig_table VARCHAR2(30) := 'T_FOC_CREW_MQ_NEW';
l_int_table VARCHAR2(30) := 'T_FOC_CREW_MQ_NEW_TEMP';
l_orig_owner VARCHAR2(30) := 'KNDBFOC';
l_tablespace VARCHAR2(30) := 'KNDBFOC';
-- 变量
l_num_errors PLS_INTEGER := 0;
l_start_time TIMESTAMP;
l_end_time TIMESTAMP;
BEGIN
DBMS_OUTPUT.PUT_LINE('[INFO] 开始在线重定义流程: ' || TO_CHAR(SYSDATE, 'YYYY-MM-DD HH24:MI:SS'));
l_start_time := SYSTIMESTAMP;
-- Step 1: 检查是否支持重定义
DBMS_OUTPUT.PUT_LINE('[INFO] 步骤 1: 检查表是否支持在线重定义...');
BEGIN
DBMS_REDEFINITION.CAN_REDEF_TABLE(
uname => l_orig_owner,
tname => l_orig_table,
options_flag => DBMS_REDEFINITION.CONS_USE_PK
);
DBMS_OUTPUT.PUT_LINE('[SUCCESS] 表支持在线重定义。');
EXCEPTION
WHEN OTHERS THEN
DBMS_OUTPUT.PUT_LINE('[ERROR] 检查失败: ' || SQLERRM);
RAISE;
END;
-- Step 2: 创建中间分区表
DBMS_OUTPUT.PUT_LINE('[INFO] 步骤 2: 创建中间分区表...');
BEGIN
EXECUTE IMMEDIATE '
CREATE TABLE ' || l_orig_owner || '.' || l_int_table || ' (
ID NUMBER(38) NOT NULL,
MESSAGE_ID VARCHAR2(255),
TOPIC VARCHAR2(255),
CHANNEL VARCHAR2(255),
INSERT_TIME DATE,
TEXT1 VARCHAR2(2000),
TEXT2 VARCHAR2(2000 CHAR),
TEXT3 VARCHAR2(2000 CHAR),
TEXT4 VARCHAR2(2000 CHAR)
)
PARTITION BY RANGE (INSERT_TIME) INTERVAL(NUMTOYMINTERVAL(1, ''MONTH''))
(
PARTITION P_INIT VALUES LESS THAN (DATE ''2020-01-01'')
)
TABLESPACE ' || l_tablespace;
DBMS_OUTPUT.PUT_LINE('[SUCCESS] 中间表创建成功。');
EXCEPTION
WHEN OTHERS THEN
IF SQLCODE = -955 THEN
DBMS_OUTPUT.PUT_LINE('[WARNING] 表已存在，跳过创建。');
ELSE
DBMS_OUTPUT.PUT_LINE('[ERROR] 创建失败: ' || SQLERRM);
RAISE;
END IF;
END;
-- Step 3: 开始重定义
DBMS_OUTPUT.PUT_LINE('[INFO] 步骤 3: 开始在线重定义...');
BEGIN
DBMS_REDEFINITION.START_REDEF_TABLE(
uname => l_orig_owner,
orig_table => l_orig_table,
int_table => l_int_table,
options_flag => DBMS_REDEFINITION.CONS_USE_PK
);
DBMS_OUTPUT.PUT_LINE('[SUCCESS] 重定义已启动。');
EXCEPTION
WHEN OTHERS THEN
DBMS_OUTPUT.PUT_LINE('[ERROR] 启动失败: ' || SQLERRM);
RAISE;
END;
-- Step 4: 复制依赖对象（✅ 极简调用，仅传必要参数）
DBMS_OUTPUT.PUT_LINE('[INFO] 步骤 4: 复制依赖对象...');
l_num_errors := 0; -- 重置错误计数
BEGIN
DBMS_REDEFINITION.COPY_TABLE_DEPENDENTS(
uname => l_orig_owner,
orig_table => l_orig_table,
int_table => l_int_table,
num_errors => l_num_errors
);
IF l_num_errors = 0 THEN
DBMS_OUTPUT.PUT_LINE('[SUCCESS] 依赖对象复制完成。');
ELSE
DBMS_OUTPUT.PUT_LINE('[WARNING] 复制完成，但有 ' || l_num_errors || ' 个错误。');
DBMS_OUTPUT.PUT_LINE('[INFO] 请查询 DBA_REDEFINITION_ERRORS 查看详情。');
END IF;
EXCEPTION
WHEN OTHERS THEN
DBMS_OUTPUT.PUT_LINE('[ERROR] 复制依赖对象时出错: ' || SQLERRM);
-- 不中断，继续完成
END;
-- Step 5: 同步增量数据
DBMS_OUTPUT.PUT_LINE('[INFO] 步骤 5: 同步增量数据...');
BEGIN
DBMS_REDEFINITION.SYNC_INTERIM_TABLE(
uname => l_orig_owner,
orig_table => l_orig_table,
int_table => l_int_table
);
DBMS_OUTPUT.PUT_LINE('[SUCCESS] 增量同步完成。');
EXCEPTION
WHEN OTHERS THEN
DBMS_OUTPUT.PUT_LINE('[WARNING] 增量同步失败: ' || SQLERRM);
END;
-- Step 6: 完成重定义
DBMS_OUTPUT.PUT_LINE('[INFO] 步骤 6: 完成重定义...');
BEGIN
DBMS_REDEFINITION.FINISH_REDEF_TABLE(
uname => l_orig_owner,
orig_table => l_orig_table,
int_table => l_int_table
);
DBMS_OUTPUT.PUT_LINE('[SUCCESS] 重定义完成！表已成功转为分区表。');
EXCEPTION
WHEN OTHERS THEN
DBMS_OUTPUT.PUT_LINE('[ERROR] 完成失败: ' || SQLERRM);
RAISE;
END;
l_end_time := SYSTIMESTAMP;
DBMS_OUTPUT.PUT_LINE('[INFO] 总耗时: ' || TO_CHAR(l_end_time - l_start_time));
DBMS_OUTPUT.PUT_LINE('[INFO] ✅ 操作成功！');
DBMS_OUTPUT.PUT_LINE('[INFO] ⚠️ 注意：请手动重新授权该表的访问权限。');
EXCEPTION
WHEN OTHERS THEN
DBMS_OUTPUT.PUT_LINE('[FATAL] 未预期错误: ' || SQLERRM);
DBMS_OUTPUT.PUT_LINE('[INFO] 如需中止，请运行：');
DBMS_OUTPUT.PUT_LINE('BEGIN DBMS_REDEFINITION.ABORT_REDEF_TABLE(''KNDBFOC'', ''T_FOC_CREW_MQ_NEW'', ''T_FOC_CREW_MQ_NEW_TEMP''); END;');
RAISE;
END;
/
```
```sql
ALTER SYSTEM FLUSH SHARED_POOL;
```