--- title: collections-details description: Provides low-level details on collections. pubDate: 2026-08-17T09:53:44.266Z antora: editUrl: https://github.com/couchbase/docs-server/edit/release/8.0/modules/cli/pages/cbstats/cbstats-collections-details.adoc xref: xref:server:cli:cbstats/cbstats-collections-details.adoc[] --- [Consult the llms.txt file for a full list of contents](/llms.txt) [View original HTML](/server/current/cli/cbstats/cbstats-collections-details.html) # collections-details > Provides low-level details on collections. ## [](#syntax)Syntax cbstats host:11210 [common options] collections-details [vbucket-reference] ## [](#description)Description This command is used to provide low-level details on collections, for a specified bucket. This includes details identifying the existing collections; and vBucket-specific details, which include sequence numbers and item counts. ## [](#options)Options The optional `vbucket-reference` parameter is an integer, in the range of `0` to `1023` inclusive, specifying a particular vBucket. If a vBucket is specified, the only details returned are the vBucket-specific details for that vBucket. If no vBucket is specified, vBucket-specific details for all vBuckets are returned, as well as details identifying the existing collections for the bucket. For information on returning a `vbucket-reference` that corresponds to a particular document id, see the section [Examples: Find vBucket IDs](cbstats-key.md#find-vbucket-ids), on the reference page for the `cbstats` command [key](cbstats-key.md). For common `cbstats` options, see [cbstats](../cbstats-intro.md). ## [](#examples)Examples The following command retrieves collections-details on all vBuckets for the administrator-created bucket `testBucket`: /opt/couchbase/bin/cbstats localhost:11210 \ -u Administrator -p password \ -b testBucket collections-details The initial section of the output is as follows: 0x0:0x0:history: false 0x0:0x0:metered: no 0x0:0x0:name: _default 0x0:0xa:history: false 0x0:0xa:maxTTL: 0 0x0:0xa:metered: no 0x0:0xa:name: MyFirstCollection 0x0:0xb:history: false 0x0:0xb:maxTTL: 0 0x0:0xb:metered: no 0x0:0xb:name: MySecondCollection 0x8:0x8:history: false 0x8:0x8:maxTTL: 0 0x8:0x8:metered: no 0x8:0x8:name: _mobile 0x8:0x9:history: false 0x8:0x9:maxTTL: 0 0x8:0x9:metered: no 0x8:0x9:name: _query manifest_uid: 3 vb_0:0x0:disk_size: 0 vb_0:0x0:high_seqno: 0 vb_0:0x0:history: false vb_0:0x0:items: 0 vb_0:0x0:name: _default vb_0:0x0:persisted_high_seqno: 0 . . . Each line of the output presents a data _key_. Each key is of the format `scopeID` : `collectionID` : `datumLabel`. Each `scopeID` or `collectionID` is a hexadecimal number, prefixed by `0x`. Each `datumLabel` is a string. Each data key is concluded with a colon, and the associated value is presented to the right of the colon. Existing collections are identified by `name`. Each is identified with hexadecimal numbers: the `_default` collection is identified as `0x0` (residing within scope `0x0`); and the other two as `0x8` and `0x9` respectively (both residing within scope `0x8`). The collection's `history` line indicates whether a _change history_ is made for the collection: `true` indicates that a change history is being made, and `false` indicates that it is not. (Note that the value can only be `true` when _Magma_ has been configured as the storage engine for the bucket: see [Creating and Editing Buckets](../../rest-api/rest-bucket-create.md).) The `maxTTL` line indicates whether a _Time To Live_ has been specified for the collection, and if so, its value. For information, see [Expiration](../../learn/data/expiration.md). The `metered` line is not used in Couchbase Server Version 7.6, and always has the value `0`. The `manifest_uid` value is associated with the current state of collections on the node; and will be incremented whenever a collections-related change is made. Subsequent information in the output relates to each vBucket corresponding to `testBucket`, on the current node. The vBuckets are numbered, from `vb_0` to `vb_1023`. For each vBucket, information is provided on sequence numbers and total items. The following command, which again refers to `testBucket`, specifies a `vbucket-reference`; thereby returning information on the specified vBucket only. /opt/couchbase/bin/cbstats localhost:11210 \ -u Administrator -p password \ -b testBucket collections-details 8 Details for vBucket `8` are duly returned: vb_8:0x0:disk_size: 0 vb_8:0x0:high_seqno: 0 vb_8:0x0:history: false vb_8:0x0:items: 0 vb_8:0x0:name: _default vb_8:0x0:persisted_high_seqno: 0 vb_8:0x0:scope: 0x0 vb_8:0x0:start_seqno: 0 vb_8:0x8:disk_size: 92 vb_8:0x8:high_seqno: 3 vb_8:0x8:history: false vb_8:0x8:items: 0 vb_8:0x8:maxTTL: 0 vb_8:0x8:name: _mobile vb_8:0x8:persisted_high_seqno: 3 vb_8:0x8:scope: 0x8 vb_8:0x8:start_seqno: 3 vb_8:0x9:disk_size: 89 vb_8:0x9:high_seqno: 2 vb_8:0x9:history: false vb_8:0x9:items: 0 vb_8:0x9:maxTTL: 0 vb_8:0x9:name: _query vb_8:0x9:persisted_high_seqno: 2 vb_8:0x9:scope: 0x8 vb_8:0x9:start_seqno: 2 vb_8:0xa:disk_size: 105 vb_8:0xa:high_seqno: 4 vb_8:0xa:history: false vb_8:0xa:items: 0 vb_8:0xa:maxTTL: 0 vb_8:0xa:name: MyFirstCollection vb_8:0xa:persisted_high_seqno: 4 vb_8:0xa:scope: 0x0 vb_8:0xa:start_seqno: 4 vb_8:0xb:disk_size: 105 vb_8:0xb:high_seqno: 5 vb_8:0xb:history: false vb_8:0xb:items: 0 vb_8:0xb:maxTTL: 0 vb_8:0xb:name: MySecondCollection vb_8:0xb:persisted_high_seqno: 5 vb_8:0xb:scope: 0x0 vb_8:0xb:start_seqno: 5 vb_8:collections: 5 vb_8:manifest:uid: 3 vb_8:manifest:uidvb_8:default_mvs: 0 vb_8:manifest:uidvb_8:default_mvsvb_8:default_legacy_max_dcp_seqno: 0 ## [](#see-also)See Also For an overview of scopes and collections, see [Scopes and Collections](../../learn/data/scopes-and-collections.md). For a step-by-step explanation of creating scopes and collections with the CLI, see [Manage Scopes and Collections with the CLI](../../manage/manage-scopes-and-collections/manage-scopes-and-collections.md#manage-scopes-and-collections-with-the-cli). For a comparable explanation with the REST API, see [Manage Scopes and Collections with the REST API](../../manage/manage-scopes-and-collections/manage-scopes-and-collections.md#manage-scopes-and-collections-with-the-rest-api). For information on _Time To Live_, see [Expiration](../../learn/data/expiration.md). To use `cbstats` to provide higher-level information on collections, see the reference page for the [collections](cbstats-collections.md) command. For information on establishing a change history for collections within a bucket, see see [Creating and Editing Buckets](../../rest-api/rest-bucket-create.md).