Author: mac
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【12c新特性】12c中新增的V$动态视图
【12c新特性】12c中新增的V$动态视图: select A.view_name from v$fixed_view_definition A where A.view_name not in (select B.view_name from v$fixed_view_definition@11gR2 B) and view_name like ‘GV%’ order by 1; GV$AQ_BACKGROUND_COORDINATOR GV$AQ_BMAP_NONDUR_SUBSCRIBERS GV$AQ_CROSS_INSTANCE_JOBS GV$AQ_JOB_COORDINATOR GV$AQ_MESSAGE_CACHE GV$AQ_MSGBM GV$AQ_NONDUR_REGISTRATIONS GV$AQ_NONDUR_SUBSCRIBER GV$AQ_NONDUR_SUBSCRIBER_LWM GV$AQ_NOTIFICATION_CLIENTS GV$AQ_SERVER_POOL GV$AQ_SUBSCRIBER_LOAD GV$ASM_ACFSREPL GV$ASM_ACFSREPLTAG GV$ASM_ACFSTAG GV$ASM_ACFS_SEC_ADMIN GV$ASM_ACFS_SEC_CMDRULE GV$ASM_ACFS_SEC_REALM GV$ASM_ACFS_SEC_REALM_FILTER GV$ASM_ACFS_SEC_REALM_GROUP GV$ASM_ACFS_SEC_REALM_USER GV$ASM_ACFS_SEC_RULE GV$ASM_ACFS_SEC_RULESET GV$ASM_ACFS_SEC_RULESET_RULE GV$ASM_AUDIT_CLEANUP_JOBS GV$ASM_AUDIT_CLEAN_EVENTS GV$ASM_AUDIT_CONFIG_PARAMS GV$ASM_AUDIT_LAST_ARCH_TS GV$ASM_ESTIMATE GV$BACKUP_NONLOGGED GV$BTS_STAT GV$BT_SCAN_CACHE…
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【12c新特性】12cR1 diff 11gR2 Hidden Parameters
【12c新特性】12cR1 diff 11gR2 Hidden Parameters _ILM_FILTER_TIME 0 Upper filter time for ILM block compression _ILM_FILTER_TIME_LOWER 0 Lower filter time for ILM block compression _ILM_POLICY_NAME FALSE User specified ILM policy name __data_transfer_cache_size 0 Actual size of data transfer cache _abort_on_mrp_crash FALSE abort database instance when MRP crashes _ac_enable_dscn_in_rac FALSE Enable Dependent Commit SCN tracking _adaptive_scalable_log_writer_disable_worker_threshold…
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【12c新特性】CBO Optimizer优化器新特性列表
【12c新特性】CBO Optimizer新隐藏参数,以下Optimizer优化器新特性列表,通过对比 12c R1 和 11gR2的10053 trace中有影响的优化器参数获得: CLI_internal_cursor PMO_altidx_rebuild _adaptive_window_consolidator_enabled _arch_comp_dbg_scan _array_cdb_view_enabled _bloom_filter_size _bloom_predicate_offload _bloom_rm_filter _bloom_sm_enabled _cell_materialize_all_expressions _cell_materialize_virtual_columns _cell_offload_complex_processing _cell_offload_expressions _cell_offload_sys_context _common_data_view_enabled _dbg_scan _fast_index_maintenance _hashops_prefetch_size _long_varchar_allow_IOT _multi_commit_global_index_maint _oltp_comp_dbg_scan _optimizer_adaptive_plans _optimizer_ads_max_table_count _optimizer_ads_time_limit _optimizer_ads_use_result_cache _optimizer_ansi_join_lateral_enhance _optimizer_ansi_rearchitecture _optimizer_batch_table_access_by_rowid _optimizer_cluster_by_rowid _optimizer_cluster_by_rowid_control _optimizer_cube_join_enabled _optimizer_dsdir_usage_control _optimizer_gather_feedback _optimizer_gather_stats_on_load _optimizer_generate_transitive_pred _optimizer_hybrid_fpwj_enabled _optimizer_multi_table_outerjoin _optimizer_null_accepting_semijoin _optimizer_partial_join_eval _optimizer_performance_feedback _optimizer_proc_rate_level _optimizer_proc_rate_source _optimizer_strans_adaptive_pruning _optimizer_unnest_scalar_sq _optimizer_use_gtt_session_stats _optimizer_use_histograms ==>10g已有…
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【12c新特性】12c中如何自动启动PDB Pluggable Database
PDB Pluggable Database是12c中扛鼎的一个新特性, 但是对于CDB中的PDB,默认启动CDB时不会将所有的PDB带起来,这样我们就需要手动alter pluggable database ALL OPEN; 例如: SQL> shutdown immediate; Database closed. Database dismounted. ORACLE instance shut down. SQL> SQL> startup ; ORACLE instance started. Total System Global Area 1419685888 bytes Fixed Size 2288344 bytes Variable Size 536872232 bytes Database Buffers 872415232 bytes Redo Buffers 8110080 bytes Database mounted. Database opened.…
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【ORA-600】12c R1上的600[kcratr_nab_less_than_odr]
如果自己搞不定可以找诗檀软件专业ORACLE数据库修复团队成员帮您恢复! 诗檀软件专业数据库修复团队 服务热线 : 13764045638 QQ号:47079569 邮箱:[email protected] SQL> startup; ORACLE instance started. Total System Global Area 1419685888 bytes Fixed Size 2288344 bytes Variable Size 536872232 bytes Database Buffers 872415232 bytes Redo Buffers 8110080 bytes Database mounted. ORA-00600: internal error code, arguments: [kcratr_nab_less_than_odr], [2], [38], [4248], [4250], [], [], [], [], [], [], [] SQL> recover…
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诡异的CBO参数_optimizer_use_histograms
_optimizer_use_histograms是一个CBO隐藏参数,目前所知该参数负责让CBO optimizer启用/禁用Histogram(This parameter enables/disables the usage of histograms by the optimizer.) 不过诡异的是这个参数在10gR2、12cR1中均存在,但是在11gR2中消失了。。。 11gR2: SQL> select * from v$version; BANNER ——————————————————————————– Oracle Database 11g Enterprise Edition Release 11.2.0.3.0 – 64bit Production PL/SQL Release 11.2.0.3.0 – Production CORE 11.2.0.3.0 Production TNS for Linux: Version 11.2.0.3.0 – Production NLSRTL Version 11.2.0.3.0 – Production SQL> alter session…
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Oracle Database 12c架构图
Oracle Database 12c架构图 高清 包括最新的后台进程及其工作原理
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ORA-17503: ksfdopn:2 Failed to open file +DATA/hisdb/control02.ctl
如果自己搞不定可以找诗檀软件专业ORACLE数据库修复团队成员帮您恢复! 诗檀软件专业数据库修复团队 服务热线 : 13764045638 QQ号:47079569 邮箱:[email protected] ORA-17503: ksfdopn:2 Failed to open file +DATA/hisdb/control02.ctl 注意当操作系统和存储之间出现IO错误时可能导致ORACLE ASM自动存储管理无法读取关键的ASM metadata,在下面的例子中 由于 ORA-27091: unable to queue I/O ORA-27072: File I/O error IBM AIX RISC System/6000 Error: 5: I/O error IBM AIX 小机出现无法读取/dev/rhdiskdata4 裸设备上的数据块,导致ASM实例无法读取关键性的ASM FILE 1 文件指针信息,此时将无法读取其他asm源数据,虽然可能ASM diskgroup可以mount,但却无法读取任何diskgroup 中的文件,启动数据库也会报错。 Dirty Detach Reconfiguration complete Fri Jun 24 15:37:39 BEIST…
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goldengate ogg ogg-00324错误
ogg-00324错误,官网解释为: Description: Must specify EXTRACT, REPLICAT or ER for group type Cause: A process was not specified for the specified parameter to act upon. Action: This parameter accepts values of ER, EXTRACT, or REPLICAT. For more information, see the Oracle GoldenGate reference documentation. CAUSE The issue is caused by the following setup: autostart and/or autorestart…
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Oracle 恢复过程 – 归档日志磁盘丢失
如果自己搞不定可以找诗檀软件专业ORACLE数据库修复团队成员帮您恢复! 诗檀软件专业数据库修复团队 服务热线 : 13764045638 QQ号:47079569 邮箱:[email protected] 恢复丢失的归档日志: 注意:如果你丢失了存档日志,而系统管理员能够修复该问题,就关闭系统。请系统管理员执行完全备份,然后重新启动Oracle。如果系统管理员不能修复该问题,且新的归档日志的位置已设置完毕,请执行下列步骤。 使用SQL*Plus, 发出以下命令: CONNECT SYS AS SYSDBA ARCHIVE LOG ‘dest’ 其中,‘dest’为新位置,例如,如果新位置是磁盘/oracle5/ORTEST1/admin/arch,那dest就是: /oracle5/ORTEST1/admin/arch 从SQL * Plus退出,通过改变LOG_ARCHIVE_DEST参数来编辑初始化文件,以反映新的归档日志的位置。 使用 SQL*Plus, 关闭Oracle系统。 请系统管理员执行Oracle系统的完整备份,然后使用SQL* Plus发出的命令,用resetlog选项重新启动数据库实例。