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[数据库]streams 日差管理及监控


第一部分 stream环境的日常管理1.capture进程管理--capture进程信息SET LINESIZE 200COLUMN CAPTURE_NAME HEADING 'Capture|Process|Name' FORMAT A15COLUMN QUEUE_NAME HEADING 'Capture|Process|Queue' FORMAT A15COLUMN RULE_SET_NAME HEADING 'Positive|Rule Set' FORMAT A15COLUMN NEGATIVE_RULE_SET_NAME HEADING 'Negative|Rule Set' FORMAT A15COLUMN STATUS HEADING 'Capture|Process|Status' FORMAT A15COLUMN ERROR_MESSAGE HEADING 'Capture|Process|E_MESSAGE' FORMAT A20SELECT CAPTURE_NAME, QUEUE_NAME, RULE_SET_NAME, NEGATIVE_RULE_SET_NAME, STATUS,ERROR_NUMBER,ERROR_MESSAGEFROM DBA_CAPTURE;--显示capture进程的统计信息COLUMN CAPTURE_NAME HEADING 'Capture|Name' FORMAT A7COLUMN PROCESS_NAME HEADING 'Capture|Process|Number' FORMAT A7COLUMN SID HEADING 'Session|ID' FORMAT 9999COLUMN SERIAL# HEADING 'Session|Serial|Number' FORMAT 9999COLUMN STATE HEADING 'State' FORMAT A27COLUMN TOTAL_MESSAGES_CAPTURED HEADING 'Redo|Entries|Evaluated|In Detail' FORMAT 9999999COLUMN TOTAL_MESSAGES_ENQUEUED HEADING 'Total|LCRs|Enqueued' FORMAT 999999SELECT c.CAPTURE_NAME,SUBSTR(s.PROGRAM,INSTR(s.PROGRAM,'(')+1,4) PROCESS_NAME,c.SID,c.SERIAL#,c.STATE,c.TOTAL_MESSAGES_CAPTURED,c.TOTAL_MESSAGES_ENQUEUEDFROM V$STREAMS_CAPTURE c, V$SESSION sWHERE c.SID = s.SID ANDc.SERIAL# = s.SERIAL#;--查看cpture状态和最后一个message形成的时间COLUMN CAPTURE_NAME HEADING 'Capture|Name' FORMAT A15COLUMN STATE HEADING 'State' FORMAT A27COLUMN STATE_CHANGED HEADING 'State|Change Time'COLUMN CREATE_MESSAGE HEADING 'Last Message|Create Time'SELECT CAPTURE_NAME,STATE,TO_CHAR(STATE_CHANGED_TIME, 'HH24:MI:SS MM/DD/YY') STATE_CHANGED,TO_CHAR(CAPTURE_MESSAGE_CREATE_TIME, 'HH24:MI:SS MM/DD/YY') CREATE_MESSAGEFROM V$STREAMS_CAPTURE;--capture性能查看COLUMN CAPTURE_NAME HEADING 'Capture|Name' FORMAT A15COLUMN ELAPSED_CAPTURE_TIME HEADING 'Elapsed|Capture|Time' FORMAT 99999999.99COLUMN ELAPSED_RULE_TIME HEADING 'Elapsed|Rule|Evaluation|Time' FORMAT 99999999.99COLUMN ELAPSED_ENQUEUE_TIME HEADING 'Elapsed|Enqueue|Time' FORMAT 99999999.99COLUMN ELAPSED_LCR_TIME HEADING 'Elapsed|LCR|Creation|Time' FORMAT 99999999.99COLUMN ELAPSED_PAUSE_TIME HEADING 'Elapsed|Pause|Time' FORMAT 99999999.99SELECT CAPTURE_NAME,(ELAPSED_CAPTURE_TIME/100) ELAPSED_CAPTURE_TIME,(ELAPSED_RULE_TIME/100) ELAPSED_RULE_TIME,(ELAPSED_ENQUEUE_TIME/100) ELAPSED_ENQUEUE_TIME,(ELAPSED_LCR_TIME/100) ELAPSED_LCR_TIME,(ELAPSED_PAUSE_TIME/100) ELAPSED_PAUSE_TIMEFROM V$STREAMS_CAPTURE;--capture进程重启需要的redoCOLUMN CONSUMER_NAME HEADING 'Capture|Process|Name' FORMAT A15COLUMN SOURCE_DATABASE HEADING 'Source|Database' FORMAT A10COLUMN SEQUENCE# HEADING 'Sequence|Number' FORMAT 99999COLUMN NAME HEADING 'Required|Archived Redo Log|File Name' FORMAT A40SELECT r.CONSUMER_NAME,r.SOURCE_DATABASE,r.SEQUENCE#,r.NAMEFROM DBA_REGISTERED_ARCHIVED_LOG r, DBA_CAPTURE cWHERE r.CONSUMER_NAME = c.CAPTURE_NAME ANDr.NEXT_SCN >= c.REQUIRED_CHECKPOINT_SCN;2.propagation进程管理--buffer_queues信息COLUMN QUEUE_SCHEMA HEADING 'Queue Owner' FORMAT A15COLUMN QUEUE_NAME HEADING 'Queue Name' FORMAT A15COLUMN MEM_MSG HEADING 'Messages|in Memory' FORMAT 99999999COLUMN SPILL_MSGS HEADING 'Messages|Spilled' FORMAT 99999999COLUMN NUM_MSGS HEADING 'Total Messages|in Buffered Queue' FORMAT 99999999SELECT QUEUE_SCHEMA,QUEUE_NAME,(NUM_MSGS - SPILL_MSGS) MEM_MSG,SPILL_MSGS,NUM_MSGSFROM V$BUFFERED_QUEUES;--显示各个propagation的基本信息COLUMN PROPAGATION_NAME HEADING 'Propagation' FORMAT A17COLUMN SUBSCRIBER_ADDRESS HEADING 'Destination|Database' FORMAT A11COLUMN CURRENT_ENQ_SEQ HEADING 'Current|Enqueued|Sequence' FORMAT 99999999COLUMN LAST_BROWSED_SEQ HEADING 'Last|Browsed|Sequence' FORMAT 99999999999999COLUMN LAST_DEQUEUED_SEQ HEADING 'Last|Dequeued|Sequence' FORMAT 99999999999999COLUMN NUM_MSGS HEADING 'Number of|Messages|in Queue|(Current)' FORMAT 999999999999COLUMN TOTAL_SPILLED_MSG HEADING 'Number of|Spilled|Messages|(Cumulative)' FORMAT 9999999999999set linesize 200SELECT p.PROPAGATION_NAME, s.SUBSCRIBER_ADDRESS, s.CURRENT_ENQ_SEQ, s.LAST_BROWSED_SEQ, s.LAST_DEQUEUED_SEQ, s.NUM_MSGS, s.TOTAL_SPILLED_MSGFROM DBA_PROPAGATION p, V$BUFFERED_SUBSCRIBERS s, V$BUFFERED_QUEUES qWHERE q.QUEUE_ID = s.QUEUE_ID AND p.SOURCE_QUEUE_OWNER = q.QUEUE_SCHEMA AND p.SOURCE_QUEUE_NAME = q.QUEUE_NAME AND p.DESTINATION_DBLINK = s.SUBSCRIBER_ADDRESS; 3.管理apply进程--apply进程基本信息COLUMN APPLY_NAME HEADING 'Apply Process Name' FORMAT A20COLUMN APPLY_CAPTURED HEADING 'Type of Messages Applied' FORMAT A25COLUMN APPLY_USER HEADING 'Apply User' FORMAT A30SELECT APPLY_NAME,DECODE(APPLY_CAPTURED,'YES', 'Captured','NO', 'User-Enqueued') APPLY_CAPTURED,APPLY_USERFROM DBA_APPLY; --apply参数设置信息COLUMN APPLY_NAME HEADING 'Apply Process|Name' FORMAT A15COLUMN PARAMETER HEADING 'Parameter' FORMAT A25COLUMN VALUE HEADING 'Value' FORMAT A20COLUMN SET_BY_USER HEADING 'Set by User?' FORMAT A15SELECT APPLY_NAME,PARAMETER,VALUE,SET_BY_USERFROM DBA_APPLY_PARAMETERS;--reader server信息COLUMN APPLY_NAME HEADING 'Apply Process|Name' FORMAT A15COLUMN APPLY_CAPTURED HEADING 'Apply Type' FORMAT A22COLUMN PROCESS_NAME HEADING 'Process|Name' FORMAT A7COLUMN STATE HEADING 'State' FORMAT A17COLUMN TOTAL_MESSAGES_DEQUEUED HEADING 'Total Messages|Dequeued' FORMAT 99999999SELECT r.APPLY_NAME,DECODE(ap.APPLY_CAPTURED,'YES','Captured LCRS','NO','User-enqueued messages','UNKNOWN') APPLY_CAPTURED,SUBSTR(s.PROGRAM,INSTR(s.PROGRAM,'(')+1,4) PROCESS_NAME,r.STATE,r.TOTAL_MESSAGES_DEQUEUEDFROM V$STREAMS_APPLY_READER r, V$SESSION s, DBA_APPLY apWHERE r.SID = s.SID ANDr.SERIAL# = s.SERIAL# ANDr.APPLY_NAME = ap.APPLY_NAME;---查看apply延时COLUMN APPLY_NAME HEADING 'Apply Process|Name' FORMAT A17COLUMN LATENCY HEADING 'Latency|in|Seconds' FORMAT 9999COLUMN CREATION HEADING 'Message Creation' FORMAT A17COLUMN LAST_DEQUEUE HEADING 'Last Dequeue Time' FORMAT A20COLUMN DEQUEUED_MESSAGE_NUMBER HEADING 'Dequeued|Message Number' FORMAT 999999SELECT APPLY_NAME,(DEQUEUE_TIME-DEQUEUED_MESSAGE_CREATE_TIME)*86400 LATENCY,TO_CHAR(DEQUEUED_MESSAGE_CREATE_TIME,'HH24:MI:SS MM/DD/YY') CREATION,TO_CHAR(DEQUEUE_TIME,'HH24:MI:SS MM/DD/YY') LAST_DEQUEUE,DEQUEUED_MESSAGE_NUMBERFROM V$STREAMS_APPLY_READER;--查看capture的参数SET LINESIZE 200COLUMN CAPUTRE_NAME HEADING 'Apply Process|Name' FORMAT A15COLUMN PARAMETER HEADING 'Parameter' FORMAT A25COLUMN VALUE HEADING 'Value' FORMAT A20COLUMN SET_BY_USER HEADING 'Set by User?' FORMAT A15SELECT CAPTURE_NAME,PARAMETER,VALUE,SET_BY_USERFROM DBA_CAPTURE_PARAMETERS;4.清除stream配置首先停止capture propagation apply进程exec dbms_streams_adm.remove_streams_configuration; ##################################################################################第二部分stream监控工具1.STRMMON是一个监控stream运行状态的一个小工具,具体参看metalink文档ID 290605.1STRMMON只支持10g R2或者更高的版本,工具可以在metalink上下载% strmmon -interval 3 -count 5 -sysdbaSTREAMS Monitor, v 2.5 Copyright Oracle Corp. 2002, 2005.Interval = 3, Count=5 Logon= @ ORACLE 10.2.0.2.0Streams Pool Size = 152MLOG : NET: Cxxx: MEM : % PRxx: Qx : PSxx: Axxx: : flow control in effect: potential bottleneckAR: apply readerAS(n): n number of apply server: xx->: database instance name 2. metalink还提供了一个stream环境的check脚本, Health Check Script 详情请参看ID 273674.1 脚本可以在metalink下载,这个脚本可以生成一个html的报表,报表包含了stream环境的性能数据。################################################################第三部分 stream环境归档日志的管理 对于stream复制环境的源数据库一端,对归档日志的清理需要注意一些问题,不是所有的归档都可以随意删除,如果误删了capture进程还需要读取的归档日志就会出现capture虽然能正常启动 status也是enable状态,但是数据缺无法复制。这里需要注意一个capture进程的参数REQUIRED_CHECKPOINT_SCN这个参数表示capture进程重新启动时需要scan的最小scn号,可以通过这个参数找到需要为capture进程保留的归档日志。这里还需要讲的一个参数是capture进程的_CHEKPOINT_FREQUENCY参数这个参数的表示logminer做一次checkpoint需要挖掘的日志大小,这个参数的单位是M,ORACLE官方建议设置为500M,也就是说当logminer处理了500M大小的redo的时候会做一次logminer的checkpoint,checkpoint之后REQUIRED_CHECKPOINT_SCN被更新,所以通过设_CHEKPOINT_FREQUENCY的大小,可以控制需要保留的归档的大小,可以使用dbms_capture_adm.set_parameter过程修改_CHEKPOINT_FREQUENCY参数下边的查询可以查出capture如果重启所需要读取的redoCOLUMN CONSUMER_NAME HEADING 'Capture|Process|Name' FORMAT A15COLUMN SOURCE_DATABASE HEADING 'Source|Database' FORMAT A10COLUMN SEQUENCE# HEADING 'Sequence|Number' FORMAT 99999COLUMN NAME HEADING 'Required|Archived Redo Log|File Name' FORMAT A40SELECT r.CONSUMER_NAME,r.SOURCE_DATABASE,r.SEQUENCE#,r.NAMEFROM DBA_REGISTERED_ARCHIVED_LOG r, DBA_CAPTURE cWHERE r.CONSUMER_NAME = c.CAPTURE_NAME ANDr.NEXT_SCN >= c.REQUIRED_CHECKPOINT_SCN; ###############################################################################第四部分 stream环境的故障诊断下面介绍了在apply过程中出现错误,打印出详细错误信息的方法比如在LCR应用过程中出现错误:select apply_name,LOCAL_TRANSACTION_ID,SOURCE_TRANSACTION_ID,ERROR_MESSAGEfrom dba_apply_error;APPLY_NAME LOCAL_TRANSACTION_ID SOURCE_TRANSACTION_ID ERROR_MESSAGE----------- ---------------------- ---------------------- -------------------------APP97_APPLY 5.27.1273 4.46.576 ORA-01403: no data found对复制管理员进行授权:SQL> GRANT SELECT ON DBA_APPLY_ERROR TO strmadmin;Grant succeededSQL> GRANT EXECUTE ON DBMS_APPLY_ADM TO strmadmin;Grant succeeded此后需要建立几个过程SQL> connect strmadmin/strmadminConnected to Oracle Database 10g Enterprise Edition Release 10.2.0.1.0 Connected as strmadmin CREATE OR REPLACE PROCEDURE print_any (DATA IN ANYDATA) IS tn VARCHAR2 (61); str VARCHAR2 (4000); CHR VARCHAR2 (1000); num NUMBER; dat DATE; rw RAW (4000); res NUMBER; BEGIN IF DATA IS NULL THEN DBMS_OUTPUT.put_line ('NULL value'); RETURN; END IF; tn := DATA.gettypename (); IF tn = 'SYS.VARCHAR2' THEN res := DATA.getvarchar2 (str); DBMS_OUTPUT.put_line (SUBSTR (str, 0, 253)); ELSIF tn = 'SYS.CHAR' THEN res := DATA.getchar (CHR); DBMS_OUTPUT.put_line (SUBSTR (CHR, 0, 253)); ELSIF tn = 'SYS.VARCHAR' THEN res := DATA.getvarchar (CHR); DBMS_OUTPUT.put_line (CHR); ELSIF tn = 'SYS.NUMBER' THEN res := DATA.getnumber (num); DBMS_OUTPUT.put_line (num); ELSIF tn = 'SYS.DATE' THEN res := DATA.getdate (dat); DBMS_OUTPUT.put_line (dat); ELSIF tn = 'SYS.RAW' THEN -- res := data.GETRAW(rw); -- DBMS_OUTPUT.PUT_LINE(SUBSTR(DBMS_LOB.SUBSTR(rw),0,253)); DBMS_OUTPUT.put_line ('BLOB Value'); ELSIF tn = 'SYS.BLOB' THEN DBMS_OUTPUT.put_line ('BLOB Found'); ELSE DBMS_OUTPUT.put_line ('typename is ' || tn); END IF; END print_any; / CREATE OR REPLACE PROCEDURE print_lcr (lcr IN ANYDATA) IS typenm VARCHAR2 (61); ddllcr SYS.lcr$_ddl_record; proclcr SYS.lcr$_procedure_record; rowlcr SYS.lcr$_row_record; res NUMBER; newlist SYS.lcr$_row_list; oldlist SYS.lcr$_row_list; ddl_text CLOB; ext_attr ANYDATA; BEGIN typenm := lcr.gettypename (); DBMS_OUTPUT.put_line ('type name: ' || typenm); IF (typenm = 'SYS.LCR$_DDL_RECORD') THEN res := lcr.getobject (ddllcr); DBMS_OUTPUT.put_line ( 'source database: ' || ddllcr.get_source_database_name ); DBMS_OUTPUT.put_line ('owner: ' || ddllcr.get_object_owner); DBMS_OUTPUT.put_line ('object: ' || ddllcr.get_object_name); DBMS_OUTPUT.put_line ('is tag null: ' || ddllcr.is_null_tag); DBMS_LOB.createtemporary (ddl_text, TRUE); ddllcr.get_ddl_text (ddl_text); DBMS_OUTPUT.put_line ('ddl: ' || ddl_text); -- Print extra attributes in DDL LCR ext_attr := ddllcr.get_extra_attribute ('serial#'); IF (ext_attr IS NOT NULL) THEN DBMS_OUTPUT.put_line ('serial#: ' || ext_attr.accessnumber ()); END IF; ext_attr := ddllcr.get_extra_attribute ('session#'); IF (ext_attr IS NOT NULL) THEN DBMS_OUTPUT.put_line ('session#: ' || ext_attr.accessnumber ()); END IF; ext_attr := ddllcr.get_extra_attribute ('thread#'); IF (ext_attr IS NOT NULL) THEN DBMS_OUTPUT.put_line ('thread#: ' || ext_attr.accessnumber ()); END IF; ext_attr := ddllcr.get_extra_attribute ('tx_name'); IF (ext_attr IS NOT NULL) THEN DBMS_OUTPUT.put_line ( 'transaction name: ' || ext_attr.accessvarchar2 () ); END IF; ext_attr := ddllcr.get_extra_attribute ('username'); IF (ext_attr IS NOT NULL) THEN DBMS_OUTPUT.put_line ('username: ' || ext_attr.accessvarchar2 ()); END IF; DBMS_LOB.freetemporary (ddl_text); ELSIF (typenm = 'SYS.LCR$_ROW_RECORD') THEN res := lcr.getobject (rowlcr); DBMS_OUTPUT.put_line ( 'source database: ' || rowlcr.get_source_database_name ); DBMS_OUTPUT.put_line ('owner: ' || rowlcr.get_object_owner); DBMS_OUTPUT.put_line ('object: ' || rowlcr.get_object_name); DBMS_OUTPUT.put_line ('is tag null: ' || rowlcr.is_null_tag); DBMS_OUTPUT.put_line ('command_type: ' || rowlcr.get_command_type); oldlist := rowlcr.get_values ('old'); FOR i IN 1 .. oldlist.COUNT LOOP IF oldlist (i) IS NOT NULL THEN DBMS_OUTPUT.put_line ('old(' || i || '): ' || oldlist (i).column_name ); print_any (oldlist (i).DATA); END IF; END LOOP; newlist := rowlcr.get_values ('new', 'n'); FOR i IN 1 .. newlist.COUNT LOOP IF newlist (i) IS NOT NULL THEN DBMS_OUTPUT.put_line ('new(' || i || '): ' || newlist (i).column_name ); print_any (newlist (i).DATA); END IF; END LOOP; -- Print extra attributes in row LCR ext_attr := rowlcr.get_extra_attribute ('row_id'); IF (ext_attr IS NOT NULL) THEN DBMS_OUTPUT.put_line ('row_id: ' || ext_attr.accessurowid ()); END IF; ext_attr := rowlcr.get_extra_attribute ('serial#'); IF (ext_attr IS NOT NULL) THEN DBMS_OUTPUT.put_line ('serial#: ' || ext_attr.accessnumber ()); END IF; ext_attr := rowlcr.get_extra_attribute ('session#'); IF (ext_attr IS NOT NULL) THEN DBMS_OUTPUT.put_line ('session#: ' || ext_attr.accessnumber ()); END IF; ext_attr := rowlcr.get_extra_attribute ('thread#'); IF (ext_attr IS NOT NULL) THEN DBMS_OUTPUT.put_line ('thread#: ' || ext_attr.accessnumber ()); END IF; ext_attr := rowlcr.get_extra_attribute ('tx_name'); IF (ext_attr IS NOT NULL) THEN DBMS_OUTPUT.put_line ( 'transaction name: ' || ext_attr.accessvarchar2 () ); END IF; ext_attr := rowlcr.get_extra_attribute ('username'); IF (ext_attr IS NOT NULL) THEN DBMS_OUTPUT.put_line ('username: ' || ext_attr.accessvarchar2 ()); END IF; ELSE DBMS_OUTPUT.put_line ('Non-LCR Message with type ' || typenm); END IF; END print_lcr; / CREATE OR REPLACE PROCEDURE print_errors IS CURSOR c IS SELECT local_transaction_id, source_database, message_number, message_count, error_number, error_message FROM dba_apply_error ORDER BY source_database, source_commit_scn; i NUMBER; txnid VARCHAR2 (30); SOURCE VARCHAR2 (128); msgno NUMBER; msgcnt NUMBER; errnum NUMBER := 0; errno NUMBER; errmsg VARCHAR2 (255); lcr ANYDATA; r NUMBER; BEGIN FOR r IN c LOOP errnum := errnum + 1; msgcnt := r.message_count; txnid := r.local_transaction_id; SOURCE := r.source_database; msgno := r.message_number; errno := r.error_number; errmsg := r.error_message; DBMS_OUTPUT.put_line ('*************************************************'); DBMS_OUTPUT.put_line ('----- ERROR #' || errnum); DBMS_OUTPUT.put_line ('----- Local Transaction ID: ' || txnid); DBMS_OUTPUT.put_line ('----- Source Database: ' || SOURCE); DBMS_OUTPUT.put_line ('----Error in Message: ' || msgno); DBMS_OUTPUT.put_line ('----Error Number: ' || errno); DBMS_OUTPUT.put_line ('----Message Text: ' || errmsg); FOR i IN 1 .. msgcnt LOOP DBMS_OUTPUT.put_line ('--message: ' || i); lcr := DBMS_APPLY_ADM.get_error_message (i, txnid); print_lcr (lcr); END LOOP; END LOOP; END print_errors; / 现在就可以使用print_errors来打印出详细的错误信息,但是注意,如果错误事务非常多,那么这个过程可能会非常耗时: SET SERVEROUTPUT ON SIZE 1000000 EXEC print_errors*************************************************----- ERROR #1----- Local Transaction ID: 5.27.1273----- Source Database: TEST201.EYGLE.COM----Error in Message: 1----Error Number: 1403----Message Text: ORA-01403: no data found--message: 1type name: SYS.LCR$_ROW_RECORDsource database: TEST201.EYGLE.COMowner: SCOTTobject: DEPTis tag null: Ycommand_type: UPDATEold(1): DEPTNO50old(2): LOCCHINAnew(1): LOCCHINAPL/SQL procedure successfully completed最后创建一个print_transaction过程可以用来打印输出指定事务的详细信息:CREATE OR REPLACE PROCEDURE print_transaction (ltxnid IN VARCHAR2) IS i NUMBER; txnid VARCHAR2 (30); SOURCE VARCHAR2 (128); msgno NUMBER; msgcnt NUMBER; errno NUMBER; errmsg VARCHAR2 (128); lcr ANYDATA; BEGIN SELECT local_transaction_id, source_database, message_number, message_count, error_number, error_message INTO txnid, SOURCE, msgno, msgcnt, errno, errmsg FROM dba_apply_error WHERE local_transaction_id = ltxnid; DBMS_OUTPUT.put_line ('----- Local Transaction ID: ' || txnid); DBMS_OUTPUT.put_line ('----- Source Database: ' || SOURCE); DBMS_OUTPUT.put_line ('----Error in Message: ' || msgno); DBMS_OUTPUT.put_line ('----Error Number: ' || errno); DBMS_OUTPUT.put_line ('----Message Text: ' || errmsg); FOR i IN 1 .. msgcnt LOOP DBMS_OUTPUT.put_line ('--message: ' || i); lcr := DBMS_APPLY_ADM.get_error_message (i, txnid); -- gets the LCR print_lcr (lcr); END LOOP; END print_transaction; / 现在来看看这个失败的事务:SET SERVEROUTPUT ON SIZE 1000000EXEC print_transaction('5.27.1273')----- Local Transaction ID: 5.27.1273----- Source Database: TEST201.EYGLE.COM----Error in Message: 1----Error Number: 1403----Message Text: ORA-01403: no data found--message: 1type name: SYS.LCR$_ROW_RECORDsource database: TEST201.EYGLE.COMowner: SCOTTobject: DEPTis tag null: Ycommand_type: UPDATEold(1): DEPTNO50old(2): LOCCHINAnew(1): LOCCHINAPL/SQL procedure successfully completed这几个过程在流复制的故障诊断中非常有用,记录于此。