我正在实施一个 Oracle Streams 环境，该环境在某些表上复制 DML 更改。
我使用了DBMS_STREAMS_ADM.MAINTAIN_TABLES过程，实例化为 DBMS_STREAMS_ADM.INSTANTIATION_TABLE_NETWORK，过程的所有块都成功执行，但是表没有在目标数据库中创建。
如文档中所述：
如果此参数设置为 DBMS_STREAMS_ADM.INSTANTIATION_TABLE 或 DBMS_STREAMS_ADM.INSTANTIATION_TABLE_NETWORK，则被实例化的表必须存在于源数据库中，并且包含这些表的表空间必须存在于目标数据库中。
细节：
存在从目标数据库到源数据库的数据库链接。
表存在于源数据库中，表空间也存在于目标数据库中。
目标数据库中不存在用户 SCOTT 。
源数据库是 Oracle Database 11g Enterprise Edition Release 11.2.0.3.0 - 64bit Production
目标数据库是 Oracle Database 11g Express Edition Release 11.2.0.2.0 - Production
主要代码：
DECLARE
tables DBMS_UTILITY.UNCL_ARRAY;
i number := 1;
j number := 1;
iscn NUMBER;
BEGIN
FOR c IN (select table_name from config_tables) LOOP
tables(i) := c.table_name;
i := i + 1;
END LOOP;
DBMS_STREAMS_ADM.MAINTAIN_TABLES(table_names => tables,
source_directory_object => NULL,
destination_directory_object => NULL,
source_database => 'db1_global_name',
destination_database => 'db2_global_name',
perform_actions => TRUE,
capture_name => 'DML_Capture_Src',
capture_queue_name => 'strmadmin.dml_streams_queue',
propagation_name => 'DML_Propagation',
apply_name => 'DML_Apply_Dest',
apply_queue_name => 'strmadmin.dml_streams_queue',
bi_directional => FALSE,
include_ddl => FALSE,
instantiation => DBMS_STREAMS_ADM.INSTANTIATION_TABLE_NETWORK);
END;
/
代码生成了 14 个块，第 7 个块（使用数据泵）
--
-- Datapump TABLE MODE IMPORT (NETWORK)
--
DECLARE
h1 NUMBER := NULL; -- data pump job handle
name_expr_list VARCHAR2(32767); -- for metadata_filter
object_name dbms_utility.uncl_array; -- object names
cnt NUMBER;
object_owner VARCHAR2(30); -- owner
job_state VARCHAR2(30); -- job state
status ku$_Status; -- data pump status
job_not_exist exception;
pragma exception_init(job_not_exist, -31626);
local_compat v$parameter.value%TYPE;
remote_compat v$parameter.value%TYPE;
min_compat v$parameter.value%TYPE;
ind NUMBER;
le ku$_LogEntry; -- For WIP and error messages
js ku$_JobStatus; -- The job status from get_status
jd ku$_JobDesc;
-- The job description from get_status
BEGIN
object_name(1) := 'DEPT';
object_name(2) := 'SALGRADE';
object_owner := 'SCOTT';
FOR idx IN 1..2 LOOP
SELECT COUNT(1) INTO cnt FROM all_tables@"db2_global_name"
WHERE owner = object_owner AND table_name = object_name(idx);
-- table does not exist locally, need instantiation
IF cnt = 0 THEN
IF name_expr_list IS NULL THEN
name_expr_list := '(';
ELSE
name_expr_list := name_expr_list ||',';
END IF;
name_expr_list := name_expr_list||''''||object_name(idx)||'''';
END IF;
END LOOP;
IF name_expr_list IS NOT NULL THEN
name_expr_list := name_expr_list || ')';
ELSE
COMMIT;
RETURN;
END IF;
select value into local_compat from v$parameter@"db1_global_name"
where name = 'compatible';
select value into remote_compat from v$parameter@"db2_global_name"
where name = 'compatible';
IF TO_NUMBER(REPLACE(local_compat, '.', '0')) > TO_NUMBER(REPLACE(remote_compat, '.', '0')) THEN
min_compat := remote_compat;
ELSE
min_compat := local_compat;
END IF;
h1 := dbms_datapump.open(operation=>'IMPORT',job_mode=>'TABLE',
remote_link=>'db1_global_name',
job_name=>NULL, version=> min_compat);
dbms_datapump.metadata_filter(
handle=>h1,
name=>'NAME_EXPR',
value=>'IN'||name_expr_list);
dbms_datapump.metadata_filter(
handle=>h1,
name=>'SCHEMA_EXPR',
value=>'IN'||'(''SCOTT'')');
dbms_datapump.start_job(h1);
job_state := 'UNDEFINED';
BEGIN
WHILE (job_state != 'COMPLETED') AND (job_state != 'STOPPED') LOOP
status := dbms_datapump.get_status(
handle => h1,
mask => dbms_datapump.ku$_status_job_error +
dbms_datapump.ku$_status_job_status +
dbms_datapump.ku$_status_wip,
timeout => -1);
job_state := status.job_status.state;
dbms_lock.sleep(10);
END LOOP;
EXCEPTION WHEN job_not_exist THEN
dbms_output.put_line('job finished');
END;
COMMIT;
EXCEPTION WHEN OTHERS THEN
dbms_output.put_line('Exception, sql code = ' || SQLCODE || ', error message: ' || SQLERRM);
dbms_output.put_line( dbms_utility.format_error_stack);
dbms_output.put_line( dbms_utility.format_error_backtrace);
IF h1 IS NOT NULL THEN
BEGIN
dbms_datapump.get_status(
handle => h1,
mask => dbms_datapump.ku$_status_job_error +
dbms_datapump.ku$_status_job_status +
dbms_datapump.ku$_status_wip,
timeout => -1,
job_state => job_state,
status => status );
dbms_output.put_line('Data pump job status: ' || job_state);
le := status.wip;
IF le IS NULL THEN
dbms_output.put_line('WIP info is NULL');
ELSE
dbms_output.put_line('WIP info:');
ind := le.FIRST;
WHILE ind IS NOT NULL LOOP
dbms_output.put_line(le(ind).LogText);
ind := le.NEXT(ind);
END LOOP;
END IF;
le := status.error;
IF le IS NULL THEN
dbms_output.put_line('Error info is NULL');
ELSE
dbms_output.put_line('Error info:');
ind := le.FIRST;
WHILE ind IS NOT NULL LOOP
dbms_output.put_line(le(ind).LogText);
ind := le.NEXT(ind);
END LOOP;
END IF;
EXCEPTION
WHEN job_not_exist THEN
dbms_output.put_line('Data pump job finished');
WHEN OTHERS THEN RAISE;
END;
END IF;
ROLLBACK;
RAISE;
END;