logical adj. 1.邏輯的,邏輯上的;邏輯學(xué)上的。 2.合乎邏輯的。 3.邏輯上必然的。 logical constants 邏輯常詞[常項(xiàng)]。 logical necessity 邏輯的必然性。 a logical argument 條件分明的論證。 a logical process 合理的程序,合乎邏輯的[必然的]過(guò)程。 the logical result 必然的結(jié)果。 adv. -ly ,-ness n.
It is important to notice that in both cases the whole database server will be restored to the specified point - in - time or logical log 以下這一點(diǎn)要重點(diǎn)注意,在兩種情況下,整個(gè)數(shù)據(jù)庫(kù)服務(wù)器都將被還原到指定的時(shí)間點(diǎn)或邏輯日志。
Whole - system backups are performed sequentially dbspace after dbspace and they can be restored without applying any logical logs 全系統(tǒng)備份是連續(xù)執(zhí)行的(一個(gè)dbspace備份完成后接著另一個(gè)dbspace備份) ,并且可以不使用任何邏輯日志來(lái)還原它們。
Currently , four virtual log files are in use by the logical log . the logical log starts at the front of the first virtual log file and ends at virtual log 4 邏輯日志從第一個(gè)虛擬日志的前端開(kāi)始,而且從未使用過(guò)虛擬日志4中超過(guò)邏輯文件末端的部分。
A cold restore has to be done if any of the critical dbspaces such as root dbspace , dbspaces containing the logical logs , or the physical log is down 如果任何關(guān)鍵dbspaces (比如根dbspace ,這些dbspace包含邏輯日志或物理日志)出錯(cuò),則必須執(zhí)行冷還原。
Backing up your logical logs is always a good idea and it is essential if you plan to do parallel backups or want to be able to perform point - in - time restores see 備份邏輯日志一直是一個(gè)好主意,如果計(jì)劃執(zhí)行并行備份或想要執(zhí)行指定到某一點(diǎn)的還原(請(qǐng)參閱
It is essential that you ensure your logical logs will be backed up regularly if you plan to do parallel backups or want be able to perform point - in - time restores 如果計(jì)劃執(zhí)行并行備份或者希望能夠執(zhí)行指定到某一時(shí)間點(diǎn)的還原,則確保定期備份邏輯日志就非常重要。
If log records were never deleted from the transaction log , the logical log would grow until it filled all the available space on the disks holding the physical log files 如果從來(lái)沒(méi)有從事務(wù)日志中刪除日志記錄,邏輯日志就會(huì)一直增長(zhǎng),直到填滿容納物理日志文件的磁盤(pán)上的所有可用空間。
However , in the case of a restore , you won t be able to get your data back because the logical logs are needed to reach a point of consistency for backups performed in parallel mode 不過(guò),在進(jìn)行這種情況的還原時(shí),無(wú)法使數(shù)據(jù)還原,因?yàn)樾枰壿嬋罩緛?lái)達(dá)到并行模式下執(zhí)行的備份的某個(gè)一致點(diǎn)。
To reduce the size of the logical log and , also , free disk space for reuse by the transaction log file , the inactive log must be truncated periodically 為了減小邏輯日志的大小,應(yīng)定期截?cái)嗍聞?wù)日志。在sql server的最早版本中,截?cái)嗳罩疽馕吨鴮⑦M(jìn)行數(shù)據(jù)庫(kù)恢復(fù)或還原不再需要的日志記錄物理刪除。
File . though the first entry will match all objects dbspaces and logical logs , dbspace backups will be correctly assigned to management class ifx db because the matching is done from the bottom upwards and stops as soon as a match has been found . for dbspaces , it stops at entry 盡管第一個(gè)條目會(huì)匹配所有對(duì)象( dbspaces和logical logs ) ,但仍會(huì)將dbspace備份正確地分配給管理類ifx _ db ,因?yàn)槠ヅ涫菑南峦线M(jìn)行的,一旦發(fā)現(xiàn)存在匹配,就會(huì)停下來(lái),對(duì)于dbspaces備份,停在條目