使用Oracle的外部表查询警告日志文件
2017-01-25 00:00
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从Oracle9i开始,Oracle的外部表技术(Oracle External Tables)被极大的增强,通过外部表访问外部数据增强了Oracle数据库和外部数据源进行数据交互的能力,对于数据仓库和ETL来说,这些增强极大的方便了数据访问。
对于DBA来说,最常见一个例子是可以使用外部表来访问警告日志文件或其他跟踪文件.
以下一个例子用来说明外部表的用途。
首先需要创建一个Directory:
然后创建一个外部表:
然后我们就可以通过外部表进行查询警告日志的内容:
如果我们需要查看数据库中曾经出现过的ORA-错误,那么可以执行如下查询:
对于DBA来说,最常见一个例子是可以使用外部表来访问警告日志文件或其他跟踪文件.
以下一个例子用来说明外部表的用途。
首先需要创建一个Directory:
[oracle@jumper oracle]$ sqlplus "/ as sysdba" SQL*Plus: Release 9.2.0.4.0 - Production on Sun Oct 15 21:42:28 2006 Copyright (c) 1982, 2002, Oracle Corporation. All rights reserved. Connected to: Oracle9i Enterprise Edition Release 9.2.0.4.0 - Production With the Partitioning option JServer Release 9.2.0.4.0 - Production SQL> create or replace directory bdump 2 as '/opt/oracle/admin/eygle/bdump'; Directory created. SQL> col DIRECTORY_PATH for a30 SQL> col owner for a10 SQL> select * from dba_directories; OWNER DIRECTORY_NAME DIRECTORY_PATH ---------- ------------------------------ ------------------------------ SYS BDUMP /opt/oracle/admin/eygle/bdump
然后创建一个外部表:
SQL> create table alert_log ( text varchar2(400) ) 2 organization external ( 3 type oracle_loader 4 default directory BDUMP 5 access parameters ( 6 records delimited by newline 7 nobadfile 8 nodiscardfile 9 nologfile 10 ) 11 location('alert_eygle.log') 12 ) 13 reject limit unlimited 14 / Table created.
然后我们就可以通过外部表进行查询警告日志的内容:
SQL> select * from alert_log where rownum < 51; TEXT ----------------------------------------------------------------------------------------- Mon Jun 26 12:00:24 2006 Starting ORACLE instance (normal) Mon Jun 26 12:00:25 2006 WARNING: EINVAL creating segment of size 0x0000000008c00000 fix shm parameters in /etc/system or equivalent LICENSE_MAX_SESSION = 0 LICENSE_SESSIONS_WARNING = 0 SCN scheme 2 Using log_archive_dest parameter default value LICENSE_MAX_USERS = 0 SYS auditing is disabled Starting up ORACLE RDBMS Version: 9.2.0.4.0. System parameters with non-default values: processes = 150 timed_statistics = TRUE shared_pool_size = 104857600 large_pool_size = 0 java_pool_size = 0 control_files = /opt/oracle/oradata/eygle/control01.ctl db_block_size = 8192 db_cache_size = 16777216 db_cache_advice = ON compatible = 9.2.0.0.0 db_file_multiblock_read_count= 16 fast_start_mttr_target = 300 log_checkpoints_to_alert = TRUE undo_management = AUTO undo_tablespace = UNDOTBS1 undo_retention = 10800 remote_login_passwordfile= EXCLUSIVE db_domain = instance_name = eygle job_queue_processes = 10 hash_join_enabled = TRUE background_dump_dest = /opt/oracle/admin/eygle/bdump user_dump_dest = /opt/oracle/admin/eygle/udump core_dump_dest = /opt/oracle/admin/eygle/cdump sort_area_size = 524288 db_name = eygle open_cursors = 500 star_transformation_enabled= FALSE query_rewrite_enabled = FALSE pga_aggregate_target = 52428800 aq_tm_processes = 0 PMON started with pid=2 DBW0 started with pid=3 LGWR started with pid=4 CKPT started with pid=5 SMON started with pid=6 RECO started with pid=7 50 rows selected. SQL>
如果我们需要查看数据库中曾经出现过的ORA-错误,那么可以执行如下查询:
SQL> select * from alert_log where text like 'ORA-%'; TEXT ----------------------------------------------------------------------------------- ORA-1652: unable to extend temp segment by 128 in tablespace TEMP ORA-1113 signalled during: alter database open... ORA-1113 signalled during: alter database datafile 3 online... ORA-09968: scumnt: unable to lock file ORA-1102 signalled during: ALTER DATABASE MOUNT... ORA-1507 signalled during: ALTER DATABASE CLOSE NORMAL... ORA-01157: cannot identify/lock data file 3 - see DBWR trace file ORA-01110: data file 3: '/opt/oracle/oradata/eygle/users01.dbf' ORA-27037: unable to obtain file status ORA-01157: cannot id 3ff0 entify/lock data file 3 - see DBWR trace file ORA-01110: data file 3: '/opt/oracle/oradata/eygle/users01.dbf' TEXT ----------------------------------------------------------------------------------- ORA-01157: cannot identify/lock data file 4 - see DBWR trace file ORA-01110: data file 4: '/opt/oracle/oradata/eygle/eygle01.dbf' ORA-27037: unable to obtain file status ORA-01157: cannot identify/lock data file 4 - see DBWR trace file ORA-01110: data file 4: '/opt/oracle/oradata/eygle/eygle01.dbf' ORA-1109 signalled during: ALTER DATABASE CLOSE NORMAL... ORA-01157: cannot identify/lock data file 4 - see DBWR trace file ORA-01110: data file 4: '/opt/oracle/oradata/eygle/eygle01.dbf' ORA-27037: unable to obtain file status ORA-01157: cannot identify/lock data file 4 - see DBWR trace file ORA-01110: data file 4: '/opt/oracle/oradata/eygle/eygle01.dbf' TEXT ----------------------------------------------------------------------------------- ORA-1109 signalled during: ALTER DATABASE CLOSE NORMAL... ORA-1113 signalled during: alter database open... ORA-01157: cannot identify/lock data file 4 - see DBWR trace file ORA-01110: data file 4: '/opt/oracle/oradata/eygle/eygle01.dbf' ORA-27037: unable to obtain file status ORA-01157: cannot identify/lock data file 4 - see DBWR trace file ORA-01110: data file 4: '/opt/oracle/oradata/eygle/eygle01.dbf' ORA-1113 signalled during: alter database open... ORA-1122 signalled during: alter database open... ORA-283 signalled during: ALTER DATABASE RECOVER database ... ORA-1122 signalled during: alter database open... TEXT ----------------------------------------------------------------------------------- ORA-1109 signalled during: ALTER DATABASE CLOSE NORMAL... ORA-1113 signalled during: ALTER DATABASE OPEN... ORA-1109 signalled during: ALTER DATABASE CLOSE NORMAL... ORA-1122 signalled during: ALTER DATABASE OPEN... ORA-1503 signalled during: CREATE CONTROLFILE REUSE DATABASE "EYGLE" NORESETL... ORA-1109 signalled during: ALTER DATABASE CLOSE NORMAL... ORA-1991 signalled during: ALTER DATABASE MOUNT... ORA-01110: data file 4: '/opt/oracle/oradata/eygle/eygle01.dbf' ORA-01115: IO error reading block from file 4 (block # 1) ORA-27069: skgfdisp: attempt to do I/O beyond the range of the file ORA-01122: database file 1 failed verification check TEXT ----------------------------------------------------------------------------------- ORA-01110: data file 1: '/opt/oracle/oradata/eygle/system01.dbf' ORA-01207: file is more recent than controlfile - old controlfile ORA-1122 signalled during: alter database open... ORA-283 signalled during: ALTER DATABASE RECOVER database using backup cont... ORA-01110: data file 4: '/opt/oracle/oradata/eygle/eygle01.dbf' ORA-01115: IO error reading block from file 4 (block # 1) ORA-27069: skgfdisp: attempt to do I/O beyond the range of the file ORA-01194: file 1 needs more recovery to be consistent ORA-01110: data file 1: '/opt/oracle/oradata/eygle/system01.dbf' ORA-1194 signalled during: alter database open resetlogs... ORA-283 signalled during: ALTER DATABASE RECOVER datafile 1 ... TEXT ----------------------------------------------------------------------------------- ORA-283 signalled during: ALTER DATABASE RECOVER database using backup cont... ORA-01110: data file 4: '/opt/oracle/oradata/eygle/eygle01.dbf' ORA-01115: IO error reading block from file 4 (block # 1) ORA-27069: skgfdisp: attempt to do I/O beyond the range of the file ORA-01194: file 1 needs more recovery to be consistent ORA-01110: data file 1: '/opt/oracle/oradata/eygle/system01.dbf' ORA-1194 signalled during: alter database open resetlogs... ORA-283 signalled during: ALTER DATABASE RECOVER datafile 1 ... ORA-1109 signalled during: ALTER DATABASE CLOSE NORMAL... ORA-1589 signalled during: ALTER DATABASE OPEN... ORA-01110: data file 4: '/opt/oracle/oradata/eygle/eygle01.dbf' TEXT ----------------------------------------------------------------------------------- ORA-01115: IO error reading block from file 4 (block # 1) ORA-27069: skgfdisp: attempt to do I/O beyond the range of the file ORA-01194: file 1 needs more recovery to be consistent ORA-01110: data file 1: '/opt/oracle/oradata/eygle/system01.dbf' ORA-1194 signalled during: alter database open resetlogs... ORA-1109 signalled during: alter database close... ORA-1503 signalled during: CREATE CONTROLFILE REUSE DATABASE "EYGLE" NORESETL... ORA-1507 signalled during: ALTER DATABASE CLOSE NORMAL... ORA-1113 signalled during: alter database open... ORA-00202: controlfile: '/opt/oracle/oradata/eygle/control01.ctl' ORA-27037: unable to obtain file status TEXT ----------------------------------------------------------------------------------- ORA-205 signalled during: ALTER DATABASE MOUNT... ORA-1507 signalled during: ALTER DATABASE CLOSE NORMAL... ORA-01501: CREATE DATABASE failed ORA-01526: error in opening file '?/rdbms/admin/sql.bsq' ORA-07391: sftopn: fopen error ORA-01526: error in opening file '' ORA-1092 signalled during: CREATE DATABASE eygle ORA-1079 signalled during: ALTER DATABASE MOUNT... ORA-1507 signalled during: alter database open... ORA-214 signalled during: alter database mount... ORA-1507 signalled during: ALTER DATABASE CLOSE NORMAL... TEXT ----------------------------------------------------------------------------------- ORA-214 signalled during: ALTER DATABASE MOUNT... ORA-214 signalled during: alter database mount... ORA-1113 signalled during: ALTER DATABASE OPEN... ORA-01157: cannot identify/lock data file 3 - see DBWR trace file ORA-01110: data file 3: '/opt/oracle/oradata/eygle/eygle02.dbf' ORA-27037: unable to obtain file status ORA-1113 signalled during: ALTER DATABASE OPEN... ORA-01157: cannot identify/lock data file 3 - see DBWR trace file ORA-01110: data file 3: '/opt/oracle/oradata/eygle/eygle02.dbf' ORA-27037: unable to obtain file status ORA-1113 signalled during: alter database open... TEXT ----------------------------------------------------------------------------------- ORA-01157: cannot identify/lock data file 3 - see DBWR trace file ORA-01110: data file 3: '/opt/oracle/oradata/eygle/eygle02.dbf' ORA-27037: unable to obtain file status ORA-283 signalled during: ALTER DATABASE RECOVER database ... ORA-1109 signalled during: ALTER DATABASE CLOSE NORMAL... ORA-1100 signalled during: alter database mount... ORA-1178 signalled during: alter database create datafile '/opt/oracle/produc... ORA-1516 signalled during: alter database create datafile '/opt/oracle/oradat... ORA-1991 signalled during: ALTER DATABASE MOUNT... ORA-01157: cannot identify/lock data file 3 - see DBWR trace file ORA-01110: data file 3: '/opt/oracle/oradata/eygle/eygle02.dbf' TEXT ----------------------------------------------------------------------------------- ORA-27037: unable to obtain file status ORA-283 signalled during: ALTER DATABASE RECOVER database ... ORA-01157: cannot identify/lock data file 3 - see DBWR trace file ORA-01110: data file 3: '/opt/oracle/oradata/eygle/eygle02.dbf' ORA-27037: unable to obtain file status ORA-283 signalled during: ALTER DATABASE RECOVER database using backup cont... ORA-1109 signalled during: ALTER DATABASE CLOSE NORMAL... ORA-1991 signalled during: ALTER DATABASE MOUNT... ORA-01157: cannot identify/lock data file 3 - see DBWR trace file ORA-01110: data file 3: '/opt/oracle/oradata/eygle/users01.dbf' ORA-27037: unable to obtain file status TEXT ----------------------------------------------------------------------------------- ORA-283 signalled during: ALTER DATABASE RECOVER database ... ORA-01157: cannot identify/lock data file 3 - see DBWR trace file ORA-01110: data file 3: '/opt/oracle/oradata/eygle/users01.dbf' ORA-27037: unable to obtain file status ORA-283 signalled during: ALTER DATABASE RECOVER database using backup cont... ORA-01157: cannot identify/lock data file 3 - see DBWR trace file ORA-01110: data file 3: '/opt/oracle/oradata/eygle/users01.dbf' ORA-27037: unable to obtain file status ORA-283 signalled during: ALTER DATABASE RECOVER database using backup cont... ORA-279 signalled during: ALTER DATABASE RECOVER database using backup cont... ORA-308 signalled during: ALTER DATABASE RECOVER CONTINUE DEFAULT ... TEXT ----------------------------------------------------------------------------------- ORA-308 signalled during: ALTER DATABASE RECOVER CONTINUE DEFAULT ... ORA-1547 signalled during: ALTER DATABASE RECOVER CANCEL ... ORA-1589 signalled during: alter database open... ORA-1109 signalled during: ALTER DATABASE CLOSE NORMAL... ORA-1503 signalled during: CREATE CONTROLFILE REUSE DATABASE "EYGLE" NORESETL... ORA-1178 signalled during: alter database create datafile '/opt/oracle/produc... ORA-1991 signalled during: ALTER DATABASE MOUNT... ORA-01157: cannot identify/lock data file 3 - see DBWR trace file ORA-01110: data file 3: '/opt/oracle/oradata/eygle/eygle02.dbf' ORA-27037: unable to obtain file status ORA-1157 signalled during: alter database open... TEXT ----------------------------------------------------------------------------------- ORA-1113 signalled during: alter database open... ORA-1991 signalled during: ALTER DATABASE MOUNT... ORA-1109 signalled during: ALTER DATABASE CLOSE NORMAL... ORA-1031 signalled during: alter database open... ORA-3217 signalled during: ALTER TABLESPACE TEMP DEFAULT STORAGE (INITIAL 10M... ORA-1507 signalled during: alter database close... ORA-1507 signalled during: ALTER DATABASE CLOSE NORMAL... ORA-1507 signalled during: alter database close normal... ORA-1507 signalled during: ALTER DATABASE CLOSE NORMAL... ORA-1106 signalled during: alter database dismount... ORA-1531 signalled during: alter database open... TEXT ----------------------------------------------------------------------------------- ORA-1531 signalled during: alter database open... ORA-1531 signalled during: alter database open... ORA-1531 signalled during: alter database open... ORA-1531 signalled during: alter database open... ORA-1109 signalled during: alter database close... ORA-1507 signalled during: alter database close... ORA-1507 signalled during: ALTER DATABASE CLOSE NORMAL... ORA-1185 signalled during: alter database add logfile group 6 ORA-350 signalled during: alter database drop logfile group 3... 163 rows selected. SQL>
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