{"record":{"id":"aaf8f03a87305d29","repo":"googleapis/mcp-toolbox","slug":"unable-to-create-pool-w-aaf8f0","errorCode":null,"errorMessage":"unable to create pool: %w","messagePattern":"unable to create pool: %w","errorType":"exception","errorClass":null,"httpStatus":null,"severity":"error","filePath":"internal/sources/postgres/postgres.go","lineNumber":77,"sourceCode":"\tPassword      string            `yaml:\"password\" validate:\"required\"`\n\tDatabase      string            `yaml:\"database\" validate:\"required\"`\n\tQueryParams   map[string]string `yaml:\"queryParams\"`\n\tQueryExecMode string            `yaml:\"queryExecMode\" validate:\"omitempty,oneof=cache_statement cache_describe describe_exec exec simple_protocol\"`\n\tSQLCommenter  *bool             `yaml:\"sqlCommenter\"`\n\t// ConnectTimeout optionally bounds how long a single connection attempt may\n\t// take, in seconds. When unset, no timeout is applied and connection behavior\n\t// is unchanged.\n\tConnectTimeout *int `yaml:\"connectTimeout\" validate:\"omitempty,gte=1\"`\n}\n\nfunc (r Config) SourceConfigType() string {\n\treturn SourceType\n}\n\nfunc (r Config) Initialize(ctx context.Context, tracer trace.Tracer) (sources.Source, error) {\n\tpool, err := initPostgresConnectionPool(ctx, tracer, r.Name, r.Host, r.Port, r.User, r.Password, r.Database, r.QueryParams, r.QueryExecMode, r.ConnectTimeout)\n\tif err != nil {\n\t\treturn nil, fmt.Errorf(\"unable to create pool: %w\", err)\n\t}\n\n\terr = pool.Ping(ctx)\n\tif err != nil {\n\t\tpool.Close()\n\t\treturn nil, fmt.Errorf(\"unable to connect successfully: %w\", err)\n\t}\n\n\ts := &Source{\n\t\tConfig: r,\n\t\tPool:   pool,\n\t}\n\treturn s, nil\n}\n\nvar _ sources.Source = &Source{}\n\ntype Source struct {","sourceCodeStart":59,"sourceCodeEnd":95,"githubUrl":"https://github.com/googleapis/mcp-toolbox/blob/8cc6e09de2ad7b8bffc77751799585a1401a48eb/internal/sources/postgres/postgres.go#L59-L95","documentation":"Error \"unable to create pool: %w\" thrown in googleapis/mcp-toolbox.","triggerScenarios":"Thrown at internal/sources/postgres/postgres.go:77 when the library encounters an invalid state.","commonSituations":"See trigger scenarios.","solutions":[],"exampleFix":null,"handlingStrategy":null,"validationCode":null,"typeGuard":null,"tryCatchPattern":null,"preventionTips":[],"tags":[],"backgroundTag":null,"analyzedSha":"8cc6e09de2ad7b8bffc77751799585a1401a48eb","analyzedAt":"2026-09-05T01:10:36.887Z","contentChangedAt":"2026-09-05T01:10:36.887Z","schemaVersion":2},"datasetVersion":"2026-09-08T15:18:49.778Z"}