DBMS_CLOUD_AI Package

The DBMS_CLOUD_AI package facilitates and configures the translation of natural language prompts to SQL statements.

• Summary of DBMS_CLOUD_AI Subprograms
  This section covers the DBMS_CLOUD_AI subprograms provided with Autonomous Database.

Summary of DBMS_CLOUD_AI Subprograms

This section covers the DBMS_CLOUD_AI subprograms provided with Autonomous Database.

Subprogram	Description
CREATE_PROFILE Procedure	This procedure creates a new AI profile for translating natural language prompts to SQL statements.
DISABLE_PROFILE Procedure	This procedure disables an AI profile in the current database.
DROP_PROFILE Procedure	This procedure drops an existing AI profile.
ENABLE_PROFILE Procedure	This procedure enables an AI profile to use in the current database.
GENERATE Function	This function generates a SQL statement using AI to translate.
GET_PROFILE Function	This function returns the profile name used in the current session.
GET_PROFILE Procedure	This procedure returns the profile name and the owner of the profile in the current session.
SET_ATTRIBUTE Procedure	This procedure sets AI profile attributes.
SET_PROFILE Procedure	This procedure sets AI profile for the current database.
CREATE_VECTOR_INDEX Procedure	This procedure creates a vector index in the specified vector database, and populates it with data from an object store using an asynchronous scheduler job.
DROP_VECTOR_INDEX Procedure	This procedure removes a vector store index. It normally removes the vector store index object and deletes the vector database.
DISABLE_VECTOR_INDEX Procedure	This procedure disables a vector index object in the current database. When disabled, an AI profile cannot use the vector index, and the system does not load data into the vector store.
ENABLE_VECTOR_INDEX Procedure	This procedure enables or activates a previously disabled vector index object.
UPDATE_VECTOR_INDEX Procedure	This procedure updates an existing vector store index with a specified value of the vector index attribute.
Vector Index Attributes	Provides vector index profile attributes that you can configure.

• CREATE_PROFILE Procedure
  The procedure creates a new AI profile for translating natural language prompts to SQL statement.
• DROP_PROFILE Procedure
  The procedure drops an existing AI profile. If the profile does not exist, then the procedure throws an error.
• ENABLE_PROFILE Procedure
  This procedure enables the AI profile that the user specifies. The procedure changes the status of the AI profile to ENABLED.
• DISABLE_PROFILE Procedure
  This procedure disables the AI profile in the current database. The status of the AI profile is changed to DISABLED by this procedure.
• GET_PROFILE Function
  This function returns the AI profile name set in the current session.
• GET_PROFILE Procedure
  This procedure returns the AI profile name and the owner set in the current session.
• SET_ATTRIBUTE Procedure
  This procedure enables you to set AI profile attributes.
• SET_PROFILE Procedure
  This procedure sets AI profile for current session.
• GENERATE Function
  This function provides AI translation in a stateless manner. With your existing AI profile, you can use this function to perform the supported actions such as showsql, narrate, or chat. The default action is showsql.
• Profile Attributes
  Attributes of an AI profile help to manage and configure the behavior of the AI profile. Some attributes are optional and have a default value.
• CREATE_VECTOR_INDEX Procedure
  This procedure creates a vector index in the specified vector database, and populates it with data from an object store using an asynchronous scheduler job.
• DROP_VECTOR_INDEX Procedure
  This procedure removes a vector store index. It normally removes the vector store index object and deletes the vector store. If set to FALSE, the argument include_data ensures the procedure only removes the vector store index object while retaining the vector store.
• DISABLE_VECTOR_INDEX Procedure
  This procedure disables a vector index object in the current database. When disabled, an AI profile cannot use the vector index, and the system does not load data into the vector store as new data is added to the object store and does not perform indexing, searching or querying based on the index.
• ENABLE_VECTOR_INDEX Procedure
  This procedure enables or activates a previously disabled vector index object. Generally, when you create a vector index, by default it is enabled such that the AI profile can use it to perform indexing and searching.
• UPDATE_VECTOR_INDEX Procedure
  This procedure updates an existing vector store index with a specified value of the vector index attribute.
• Vector Index Attributes
  Attributes of a vector index help to manage and configure the behavior of the vector index. You can add custom index attributes as necessary. Some attributes are optional and have a default value.

CREATE_PROFILE Procedure

The procedure creates a new AI profile for translating natural language prompts to SQL statement.

Syntax

DBMS_CLOUD_AI.CREATE_PROFILE
   profile_name        IN  VARCHAR2,
   attributes          IN  CLOB      DEFAULT NULL,
   status              IN  VARCHAR2  DEFAULT NULL,
   description         IN  CLOB      DEFAULT NULL
);

Parameters

Parameter	Description
profile_name	A name for the AI profile. The profile name must follow the naming rules of Oracle SQL identifier. Maximum length of profile name is 125 characters. This is a mandatory parameter.
attributes	Profile attributes in JSON format. See AI Profile Attributes for more details. The default value is NULL.
status	Status of the profile. The default value is enable.
description	Description for the AI profile. The default value is NULL.

Example

BEGIN
     DBMS_CLOUD_AI.CREATE_PROFILE(
          profile_name    => 'OpenAI',
          attributes      => JSON_OBJECT('provider' value 'openai',
                                         'credential_name' value 'openai_cred'),
          description     => 'AI profile to use OpenAI for SQL translation'
     );
END;
/

DROP_PROFILE Procedure

The procedure drops an existing AI profile. If the profile does not exist, then the procedure throws an error.

Syntax

DBMS_CLOUD_AI.DROP_PROFILE(
       profile_name        IN   VARCHAR2,
       force               IN   BOOLEAN DEFAULT FALSE
 );

Parameters

Parameter	Description
profile_name	Name of the AI profile
force	If TRUE, then the procedure ignores errors if AI profile does not exist. The default value for this parameter is FALSE.

Example

BEGIN
     DBMS_CLOUD_AI.DROP_PROFILE(profile_name => 'OPENAI');
END;
/

Usage Notes

Use force to drop a profile and ignore errors if AI profile does not exist.

ENABLE_PROFILE Procedure

This procedure enables the AI profile that the user specifies. The procedure changes the status of the AI profile to ENABLED.

Syntax

DBMS_CLOUD_AI.ENABLE_PROFILE(
     profile_name         IN   VARCHAR2
 );

Parameters

Parameter	Description
profile_name	Name for the AI profile to enable This parameter is mandatory.

Example to Enable AI Profile

BEGIN
     DBMS_CLOUD_AI.ENABLE_PROFILE(
         profile_name    => 'OPENAI'
     );
END;
/

DISABLE_PROFILE Procedure

This procedure disables the AI profile in the current database. The status of the AI profile is changed to DISABLED by this procedure.

Syntax

DBMS_CLOUD_AI.DISABLE_PROFILE(
      profile_name  IN  VARCHAR2
);

Parameters

Parameter	Description
profile_name	Name for the AI profile. This parameter is mandatory.

Example

BEGIN
     DBMS_CLOUD_AI.DISABLE_PROFILE(
         profile_name    => 'OPENAI'
     );
END;
/

GET_PROFILE Function

This function returns the AI profile name set in the current session.

Syntax

DBMS_CLOUD_AI.GET_PROFILE(
    profile_name      IN  VARCHAR2
);

Parameters

Parameter	Description
profile_name	A name for the AI profile in the current session. This parameter is mandatory.

Example

This example shows how you can display the name of the profile in the current session.

   SELECT DBMS_CLOUD_AI.GET_PROFILE
   from DUAL;

GET_PROFILE Procedure

This procedure returns the AI profile name and the owner set in the current session.

Syntax

DBMS_CLOUD_AI.GET_PROFILE(                                                      
      profile_name  OUT  VARCHAR2,                                          
      profile_owner OUT  VARCHAR2                                           
);

Parameters

Parameter	Description
profile_name	A name for the AI profile in the current session. This parameter is mandatory.
profile_owner	Identifies the owner of the AI profile in the current session.

Example

This example shows how you can display the name and owner of the profile in the current session.

DECLARE                                                              
       l_profile_name  DBMS_ID;                                           
       l_profile_owner DBMS_ID;                                           
     BEGIN                                                                
       DBMS_CLOUD_AI.GET_PROFILE(profile_name => l_profile_name,          
                                 profile_owner => l_profile_owner);       
     END;

SET_ATTRIBUTE Procedure

This procedure enables you to set AI profile attributes.

Syntax

DBMS_CLOUD_AI.SET_ATTRIBUTE(
      profile_name         IN   VARCHAR2,
      attribute_name       IN   VARCHAR2,
      attribute_value      IN   CLOB
);

Parameters

Only the owner can set or modify the attributes of the AI profile. For a list of supported attributes, see Profile Attributes.

Parameter	Description
profile_name	Name of the AI profile for which you want to set the attributes. This parameter is mandatory.
attribute_name	Name of the AI profile attribute This parameter is mandatory.
attribute_value	Value of the profile attribute. The default value is NULL.

Example

BEGIN
 DBMS_CLOUD_AI.SET_ATTRIBUTE(
   profile_name    => 'OPENAI',
   attribute_name  => 'credential_name',
   attribute_value => 'OPENAI_CRED_NEW'
 );
END;
/

SET_PROFILE Procedure

This procedure sets AI profile for current session.

After setting an AI profile for the database session, any SQL statement with the prefix SELECT AI is considered a natural language prompt. Depending on the action specified with the AI prefix, a response is generated using AI. To use the AI prefix, see Examples of Using Select AI. Optionally, it is possible to override the profile attributes or modify attributes by specifying them in JSON format. See SET_ATTRIBUTE Procedure for setting the attributes.

The AI profile can only be set for current session if the owner of the AI profile is the session user.

To set an AI profile for all sessions of a specific database user or all user sessions in the database, consider using a database event trigger for AFTER LOGON event on the specific user or the entire database. See CREATE TRIGGER Statement for more details.

Syntax

DBMS_CLOUD_AI.SET_PROFILE(
    profile_name      IN  VARCHAR2,
);

Parameters

Parameter	Description
profile_name	A name for the AI profile in the current session. This parameter is mandatory.

Example

   BEGIN
        DBMS_CLOUD_AI.SET_PROFILE(
          profile_name    => 'OPENAI'
        );
   END;
   /

GENERATE Function

This function provides AI translation in a stateless manner. With your existing AI profile, you can use this function to perform the supported actions such as showsql, narrate, or chat. The default action is showsql.

Overriding some or all of the profile attributes is also possible using this function.

Syntax

DBMS_CLOUD_AI.GENERATE(
    prompt          IN  CLOB,
    profile_name    IN  VARCHAR2 DEFAULT NULL,
    action          IN  VARCHAR2 DEFAULT NULL,
    attributes      IN  CLOB     DEFAULT NULL
) RETURN CLOB;

Parameters

Parameter	Description
prompt	Natural language prompt to translate using AI. The prompt can include SELECT AI <action> as the prefix. The action can also be supplied separately as an "action" parameter. The action supplied in prompt overrides the "action" parameter. Default action is showsql. This parameter is mandatory.
profile_name	Name of the AI profile. This parameter is optional if an AI profile is already set in the session using DBMS_CLOUD_AI.SET_PROFILE. The default value is NULL. The following conditions apply: If a profile is set in the current session, the user may omit profile_name argument in the DBMS_CLOUD_AI.GENERATE function. If the profile_name argument is supplied in the DBMS_CLOUD_AI.GENERATE function, it overrides any value set in the session using the DBMS_CLOUD_AI.SET_PROFILE procedure. If there is no profile set in the session using the DBMS_CLOUD_AI.SET_PROFILE procedure, the profile_name argument must be supplied in the DBMS_CLOUD_AI.GENERATE function. Note: For Database Actions, you can either specify profile_name argument in DBMS_CLOUD_AI.GENERATE or you can run two steps as a PL/SQL script: DBMS_CLOUD_AI.SET_PROFILE and DBMS_CLOUD_AI.GENERATE. EXEC DBMS_CLOUD_AI.set_profile('OPENAI'); ----------------------------------------------- SELECT DBMS_CLOUD_AI.GENERATE(prompt => 'how many customers', profile_name => 'OPENAI', action => 'showsql') FROM dual; ------------------------------------------------ SELECT DBMS_CLOUD_AI.GENERATE(prompt => 'how many customers', profile_name => 'OPENAI', action => 'narrate') FROM dual; ------------------------------------------- SELECT DBMS_CLOUD_AI.GENERATE(prompt => 'what is oracle autonomous database', profile_name => 'OPENAI', action => 'chat') FROM dual; See Executing SQL Statements in the Code Editor for more information.
action	Action for translating natural prompt using AI. The supported actions include showsql (default), narrate, and chat. Descriptions of actions are included in Use AI Keyword to Enter Prompts. Note: This function does not support the runsql action. If you supply the runsql action, it returns the following error: ORA-20000: runsql action is not supported by generate function ORA-06512: at "C##CLOUD$SERVICE.DBMS_CLOUD", line xxxx ORA-06512: at "C##CLOUD$SERVICE.DBMS_CLOUD_AI", line 2696 ORA-06512: at line x
attributes	Override specific AI profile attributes by supplying attributes in JSON format. See Profile Attributes for more details.

Examples

The following examples illustrate showsql, narrate, and chat actions that can be used with the DBMS_CLOUD_AI.GENERATE function.

An example with showsql action is as follows:

SELECT DBMS_CLOUD_AI.GENERATE(prompt       => 'how many customers',
                              profile_name => 'OPENAI',
                              action       => 'showsql')
FROM dual;

An example with narrate action is as follows:

SELECT DBMS_CLOUD_AI.GENERATE(prompt       => 'how many customers',
                              profile_name => 'OPENAI',
                              action       => 'narrate')
FROM dual;

An example with chat action is as follows:

SELECT DBMS_CLOUD_AI.GENERATE(prompt       => 'what is oracle autonomous database',
                              profile_name => 'OPENAI',
                              action       => 'chat')
FROM dual;

Profile Attributes

Attributes of an AI profile help to manage and configure the behavior of the AI profile. Some attributes are optional and have a default value.

Attributes

Attribute Name	Description
azure_deployment_name	Name of the Azure OpenAI Service deployed model. The name can only include alphanumeric characters, underscore character (_) and a hyphen (-) character. The name cannot end with an underscore (_) or a hyphen (-). To know how to get the azure_deployment_name, see Create and deploy an Azure OpenAI Service resource.
azure_embedding_deployment_name	Name of the Azure OpenAI deployed embedding model. The name can only include alphanumeric characters, underscore, and hyphen. The name can't start or end with a hyphen or underscore.
azure_resource_name	Name of the Azure OpenAI Service resource. The resource name can only include alphanumeric characters and hyphens, and can't start or end with a hyphen. To know how to get the azure_resource_name, see Create and deploy an Azure OpenAI Service resource.
comments	Include column comments in the metadata used for translating natural language prompts using AI. BOOLEAN datatype is supported. The valid values are TRUE or FALSE for a string with VARCHAR2 datatype. Note: Boolean values are not applicable in the DBMS_CLOUD_AI.SET_ATTRIBUTE procedure when setting a single attribute because attribute_value parameter is of CLOB data type.
conversation	A VARCHAR2 attribute that indicates if conversation history is enabled for a profile. Only OpenAI and Azure OpenAI Service support conversation history. Valid values are true or false. The default value is false. The values are not case sensitive.
credential_name	The name of the credential to access the AI provider APIs. Credential using bearer tokens can be created by using the provider name as the user name and bearer token as the password. Vault Secret credentials are also supported. Principle authentication, for example, Azure service principle, is also supported. For more information on how to configure it, see Use Azure Service Principal to Access Azure Resources. This is a mandatory attribute. See CREATE_CREDENTIAL Procedure.
embedding_model	The embedding model defined in the AI profile. The following are the supported AI providers for the embedding models: OpenAI Azure OpenAI Cohere OCI GenAI The following are the default values for each AI provider: For OpenAI and Azure OpenAI: text-embedding-ada-002 For Cohere: embed-english-v2.0 For OCI GenAI: cohere.embed-english-v3.0
max_tokens	Denotes the number of tokens to predict per generation. Default is 1024. See Tokens and Tokenizers for more details.
model	The name of the AI model being used to generate responses. Supported models for: OpenAI: gpt-4o, gpt-4o-mini, gpt-4, gpt-4-0613, gpt-4-32k, gpt-4-32k-0613, gpt-3.5-turbo (default), gpt-3.5-turbo-0613, gpt-3.5-turbo-16k, gpt-3.5-turbo-16k-0613 Cohere: command (default), command-nightly (experimental), command-light, and command-light-nightly (experimental). Smaller, "light" models are faster, while larger models perform better. Custom models can also be supplied with their full ID. OCI Generative AI: The supported Chat Models are: meta.llama-3-70b-instruct (default), cohere.command-r-16k, cohere.command-r-plus. The Chat Models are supported for all Select AI actions such as runsql, showsql, explainsql, narrate, and chat. The supported Generation Models are: cohere.command, cohere.command-light, and meta.llama-2-70b-chat. Select AI supports pretrained models for OCI Generative AI. Custom models can also be supplied with their full OCIDs. If you are supplying OCID or oci_endpoint_id, be sure to provide either oci_runtimetype or oci_apiformat depending on the OCI Chat or Generation Models. To know more about supported models in OCI Generative AI, see Pretrained Foundational Models in Generative AI. Google: gemini-1.5-flash (default), gemini-1.5-pro, gemini-1.0-pro Note: This parameter is not used for Azure as the model is determined when you create your deployment in the Azure OpenAI Service portal.
object_list	Array of JSON objects specifying the owner and object names that are eligible for natural language translation to SQL. To include all objects of a given user, omit the "name" and only specify the "owner" key in the JSON object. The following types of objects can be used: tables views materialized views global temporary tables external tables synonyms on the above object types For translation natural language to SQL, the object name, object owner, object columns and comments are sent to the AI provider using HTTPS requests. Avoid specifying objects with sensitive object name, column names or comments in the object list. AI providers may have limit on the size of metadata allowed in translation requests. Consider limiting the list of objects suitable for the natural language prompts by your application users. Format: [ {"owner": "SH", "name": "SALES", {"owner": "TEST_USER"} ] External tables created using sync of OCI Data Catalog or AWS Glue can also be used the object list. This helps in managing metadata in central Data Catalogs and use the metadata directly for translating natural language prompts using AI.
oci_apiformat	Specifies the format in which the API expects data to be sent and received. Use this attribute to generate text responses. This attribute applies to OCI Generative AI Chat Models in a dedicated AI cluster. Specify this attribute when you specify a model OCID in the model attribute or provide an endpoint in the oci_endpoint_id attribute. Supported values are: COHERE GENERIC
oci_compartment_id	Specifies the OCID of the compartment you are permitted to access when calling the OCI Generative AI service. The compartment ID can contain alphanumeric characters, hyphens and dots. The default is the compartment ID of the PDB.
oci_endpoint_id	This attributes indicates the endpoint OCID of the Oracle dedicated AI hosting cluster. The endpoint ID can contain alphanumeric characters, hyphens and dots. To find the endpoint OCID, see Getting an Endpoint's Details in Generative AI. When you want to use the Oracle dedicated AI cluster, you must provide the endpoint OCID of the hosting cluster. By default, the endpoint ID is empty and the model is on-demand on a shared infrastructure.
oci_runtimetype	This attribute indicates the runtime type of the provided model. This attribute is applicable to OCI Generation Models in a dedicated AI cluster. Specify this attribute when you specify a model OCID in the model attribute or provide an endpoint in the oci_endpoint_id attribute. All allowed values can be found in OCI Generative AI runtimeType. See LlmInferenceRequest Reference. The supported values are: COHERE LLAMA
provider	AI provider for the AI profile. Supported providers: openai cohere azure oci google This is a mandatory attribute.
region	This attribute indicates the location of the Generative AI cluster that you want to use. The region can contain alphanumeric characters and hyphen characters. Note: The Oracle Generative AI cluster is available in Chicago, Frankfurt, and London regions. See Pretrained Foundational Models in Generative AI. The default region is us-chicago-1.
stop_tokens	The generated text will be terminated at the beginning of the earliest stop sequence. Sequence will be incorporated into the text. The attribute value must be a valid array of string values in JSON format. stop_tokens takes a JSON array as input. To learn more about stop tokens or stop sequences, see OpenAI or Cohere documentation.
temperature	Sampling from generation models incorporates randomness, so that the same prompt may yield different outputs each time you hit "generate". Temperature is a non-negative float number used to tune the degree of randomness. Lower temperatures mean less random generations. See Temperature for more details. This parameter is applicable to all the supported service providers.
vector_index_name	Name of the vector index. The vector index name must follow the naming rules of Oracle SQL identifier. Maximum length of the vector store name is 125 characters.

The following example is using Cohere as the provider and displays custom profile attributes:

BEGIN
  DBMS_CLOUD_AI.CREATE_PROFILE(
     profile_name => 'COHERE',
     attributes =>
      '{"provider": "cohere",
        "credential_name": "COHERE_CRED",
        "object_list": [{"owner": "ADMIN"}],
        "max_tokens":512,
        "stop_tokens": [";"],
        "model": "command-nightly",
        "temperature": 0.5,
        "comments": true
       }');
END;
/

The following example shows custom profile attributes using OCI Generative AI:

BEGIN                                                                        
  DBMS_CLOUD_AI.CREATE_PROFILE(                                              
      'GENAI',                                                             
      '{"provider": "oci",                                                                   
        "credential_name": "GENAI_CRED",                                     
        "object_list": [{"owner": "SH", "name": "customers"},                
                        {"owner": "SH", "name": "countries"},                
                        {"owner": "SH", "name": "supplementary_demographics"},
                        {"owner": "SH", "name": "profits"},                  
                        {"owner": "SH", "name": "promotions"},               
                        {"owner": "SH", "name": "products"}],
        "oci_compartment_id": "ocid1.compartment.oc1...",
	"oci_endpoint_id": "ocid1.generativeaiendpoint.oc1.us-chicago-1....",
	"region": "us-chicago-1",
	"model": "cohere.command-light",
	"oci_runtimetype": "COHERE"            
       }');                                                                  
END;                                                                         
/ 

CREATE_VECTOR_INDEX Procedure

This procedure creates a vector index in the specified vector database, and populates it with data from an object store using an asynchronous scheduler job.

Syntax

PROCEDURE CREATE_VECTOR_INDEX(                                              
   index_name          IN  VARCHAR2,                                        
   attributes          IN  CLOB      DEFAULT NULL,                          
   status              IN  VARCHAR2  DEFAULT NULL,                          
   description         IN  CLOB      DEFAULT NULL                           
); 

Parameters

Parameter	Description
index_name	Name of the vector index. The vector index name must follow the naming rules of Oracle SQL identifier. Maximum length of vector store name is 125 characters. This is a mandatory parameter.
attributes	Custom attributes for the vector index in JSON. To see a list of configurable parameters, see Vector Index Attributes. The default value is NULL.
status	Status of the vector index. The possible values are: Enabled Disabled The default value is Disabled.
description	Description for the vector index. The default value is NULL.

Example

The following example demonstrates how to create a vector index and configure the attributes as JSON parameters.

BEGIN                                                                
       DBMS_CLOUD_AI.CREATE_VECTOR_INDEX(                                 
            index_name    => 'MY_INDEX'                                   
            attributes    => JSON_OBJECT(                                 
                       'vector_db_provider' value 'oracle',
                       'vector_table_name'  value 'oracle_mycollection', 
                       'vector_db_credential_name' value 'VS_CRED',              
                       'profile_name'      value 'OCIGENAI',         
                       'location'          value                          
                         'https://objectstorage.us-phoenix-1.' ||         
                         'oraclecloud.com/n/mynamespace/b/mybucket',      
                       'object_store_credential_name'   value 'OS_CRED',              
                       'chunk_size'        value 2048,                    
                       'chunk_overlap'     value 256,                     
                       'refresh_rate'      value 720)                     
       );                                                                 
END;                                                                 
/

DROP_VECTOR_INDEX Procedure

This procedure removes a vector store index. It normally removes the vector store index object and deletes the vector store. If set to FALSE, the argument include_data ensures the procedure only removes the vector store index object while retaining the vector store.

Syntax

PROCEDURE DROP_VECTOR_INDEX(                                                
   index_name          IN  VARCHAR2,           
   include_data        IN  BOOLEAN DEFAULT TRUE,                            
   force               IN  BOOLEAN DEFAULT FALSE                           
);

Parameters

Parameter	Description
index_name	Name of the vector index. The vector index name must follow the naming rules of Oracle SQL identifier. Maximum length of vector store name is 125 characters. This is a mandatory parameter.
include_data	Indicates whether to delete both the customer's vector store and vector index along with the vector index object. Possible values: TRUE FALSE The default value is TRUE.
force	Indicates whether to ignore errors that occur if the vector index does not exist. Possible values: TRUE FALSE If set to TRUE, this parameter bypasses any errors that occur if the vector index does not exist. The default value is FALSE.

Example

BEGIN
DBMS_CLOUD_AI.DROP_VECTOR_INDEX(
        index_name     => 'MY_INDEX',
        include_data   => FALSE,
        force          => TRUE
     );                                                                 
END;                                                                 
/

DISABLE_VECTOR_INDEX Procedure

This procedure disables a vector index object in the current database. When disabled, an AI profile cannot use the vector index, and the system does not load data into the vector store as new data is added to the object store and does not perform indexing, searching or querying based on the index.

Syntax

DBMS_CLOUD_AI.DISABLE_VECTOR_INDEX(                                              
   index_name       IN  VARCHAR2                                            
);

Parameters

Parameter	Description
index_name	Name of the vector index. The vector index name must follow the naming rules of Oracle SQL identifier. Maximum length of vector store name is 125 characters. This is a mandatory parameter.

Example

You can disable a vector index by providing the name of the vector index.

BEGIN                                                                
   DBMS_CLOUD_AI.DISABLE_VECTOR_INDEX(index_name => 'MY_INDEX');       
END;                                                                 
/

ENABLE_VECTOR_INDEX Procedure

This procedure enables or activates a previously disabled vector index object. Generally, when you create a vector index, by default it is enabled such that the AI profile can use it to perform indexing and searching.

When enabled, a vector index allows an AI profile to use it for loading new data from an object store into a vector store at a user-specified refresh rate. You can specify the refresh_rate parameter through the JSON object list. To configure the JSON attributes, see Vector Index Attributes.

Syntax

DBMS_CLOUD_AI.ENABLE_VECTOR_INDEX(                                              
   index_name       IN  VARCHAR2                                            
);

Parameters

Parameter	Description
index_name	Name of the vector index. The vector index name must follow the naming rules of Oracle SQL identifier. Maximum length of vector store name is 125 characters. This is a mandatory parameter.

Example

You can enable or activate a vector index by specifying the vector index name as follows:

BEGIN                                                                
   DBMS_CLOUD_AI.ENABLE_VECTOR_INDEX(index_name => 'MY_INDEX');       
END;                                                                 
/

UPDATE_VECTOR_INDEX Procedure

This procedure updates an existing vector store index with a specified value of the vector index attribute.

Syntax

DBMS_CLOUD_AI.UPDATE_VECTOR_INDEX(                                                 
     index_name         IN  VARCHAR2,                                         
     attributes         IN  CLOB                           
  );

Parameters

Parameter	Description
index_name	Name of the vector index. The vector index name must follow the naming rules of Oracle SQL identifier. Maximum length of vector store name is 125 characters. This is a mandatory parameter.
attributes	Name of the custom attributes specified as JSON parameters in CREATE_VECTOR_INDEX procedure. You cannot modify the following attributes: location vector_table_name chunk_size chunk_overlap vector_distance_metric vector_dimension This is a mandatory parameter.
attribute_value	User specified value for the custom attribute_name. The default value is NULL.

Example

BEGIN                                                                
   DBMS_CLOUD_AI.UPDATE_VECTOR_INDEX(                                 
      index_name       => 'MY_INDEX',                                   
      attribute_name   => 'vector_db_credential_name',                
      attribute_value  => 'NEW_CRED'                           
   );                                                                 
END;                                                                 
/

Vector Index Attributes

Attributes of a vector index help to manage and configure the behavior of the vector index. You can add custom index attributes as necessary. Some attributes are optional and have a default value.

Attributes

Attribute Name	Value	Mandatory	Description
chunk_size	1024 (default)	No	Text size of chunking the input data. For text data, this means the number of characters.
chunk_overlap	128 (default)	No	Specifies the amount of overlapping characters between adjacent chunks of text. This attribute is useful for ensuring contextual continuity and accuracy in text processing by allowing overlaps between segments, which helps prevent loss of contextual information at chunk boundaries.
location	NA	Yes	Location of the object store.
match_limit	5 (default)	No	Specifies the maximum number of results to return in a vector search query, controlling the output size and improving the efficiency of data retrieval operations.
object_storage_credential_name	NA	Yes	Specifies the name of the credentials for accessing an object storage.
pipeline_name	<vector_index_name>$VECPIPELINE	No	Specifies the name of the vector index data load pipeline. This attribute is automatically set for the vector index, you cannot specify or modify. The pipeline name can be used to monitor the vector index data load using Monitor and Troubleshoot Pipelines.
profile_name	NA	Yes	Name of the AI profile which is used for embedding source data and user prompts.
refresh_rate	1440 minutes (default)	No	Interval of updating data in the vector store. The unit is minutes.
similarity_threshold	0 (default)	No	Defines the minimum level of similarity required for two items to be considered a match, useful for filtering results in matching algorithms to ensure relevance.
vector_distance_metric	Valid values for Oracle 23ai: EUCLIDEAN L2_SQUARED (EUCLIDEAN_SQUARED) COSINE (default) DOT MANHATTAN HAMMING	No	Specifies the type of distance calculation used to compare vectors in a database, determining how similarity between items is quantified.
vector_db_provider	oracle	Yes	Specifies the provider name that manages and serves as the vector store.
vector_dimension	NA	No	Specifies the number of elements in each vector within the vector store, defining the size and structure of the data representation.
vector_table_name	<vector_index_name>$VECTAB (default)	No	Specifies the name of the table or collection to store vector embeddings and chunked data. For Qdrant, provide the collection name as the vector store name.

The following example demonstrates creating a vector index with OCI Generative AI vector store.

BEGIN
       DBMS_CLOUD_AI.CREATE_VECTOR_INDEX(
         index_name  => 'MY_INDEX',
         attributes  => '{"vector_db_provider": "oracle",
                          "location": "https://swiftobjectstorage.us-phoenix-1.oraclecloud.com/v1/my_namespace/my_bucket/my_data_folder",
                          "object_storage_credential_name": "OCI_CRED",
                          "profile_name": "OPENAI_ORACLE",
                          "vector_dimension": 1024,
                          "vector_distance_metric": "cosine",
                          "chunk_overlap":128,
                          "chunk_size":1024
      }');
END;
/                                                                 
/